Here's Why Your Car Rattles on Cold Starts

Do you hear a rattle from your car's engine on cold starts?
The reason is the variable valve timing actuator pin can wear out and not engage when the vehicle is parked. Once all the oil drains out overnight, the actuator rattles before catching itself back into place until oil pressure is built up.
In this video, we take a look at where the VVT actuators are located on a 1MZ-FE V6 Toyota VVT-i engine, take it apart and examine the wear on the VVT-i actuator.
The remedy for this issue is to replace the actuator which involves removing valve covers, the timing belt side of the engine and the camshaft. Typically at the age these fail it its not worth replacing, and it shouldn't be of severe harm to your engine. A heavier oil weight or stabilizer (such as Lucas) might help dampen the sound, but ultimately the wear on the metal components will still exist.
Make sure you change your car's engine oil on time!
You can get engine oil here:
amzn.to/3amcZEz (US)
amzn.to/2xIia47 (Canada)
Oil filter:
amzn.to/34Ondfy (US)
amzn.to/3cyQ7Dh (Canada)
Oil Filter wrench:
amzn.to/3ewnmZv (US)
amzn.to/2yt77f8 (Canada)
Special security bit for the VVT-i bolts:
amzn.to/2RNNBRm (US)
amzn.to/2VksiZV (Canada)
This is the Camera I use:
amzn.to/2Y24ixX (US)
amzn.to/2Yhb3eo (Canada)
Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies:
www.etsy.com/ca/shop/Speedkar
Check out the speedkar99 Facebook page:
/ speedkar9
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/ speedkar9
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[@afrosamuri05]

"Brothers old underwear". You're game, good thing you wore gloves.

[@speedkar99]

Haha gloves for underwear

[@seantogo2]

Brothers toothbrush 😄😄

[@dastate27]

😂😂😂😂😂😂😂 brothers old underwear

[@luisromanlegionaire]

@@speedkar99 I take it your brother is always late in the morning to get out the door since he has to look for his items.

[@_rdcn3134]

😂😂😂😂😂😂😂I'm speechless...he said broz old tantarantemz/ drawz...#imdone

[@davidgutierrez-yc4eu]

Wow! After years of a muddled understanding on how this VVT system works, your video has clarified for me how this system operates. Thank you. Well done. 🙂👍🏼

[@Crazystuffyousee]

I'm not sure how this channel doesnt have more subscribers... Your ability to explain and teach is awesome...!

[@Z14kt12timandjes1]

I love your videos. You truly take teaching to the next level by not only telling your viewers what is happening, but actually showing them. Thanks

[@speedkar99]

Glad you enjoy my video style

[@richmccallable]

Man if your brother wasn't there to help you with all his stuff!!

[@NdalamaCassiusMaluleke]

He literally became all the toolbox needed for the job.

[@2driftlong]

"going to use a piece of my brother's old underwear", can I use my wife's old underwear instead? I don't speak to my brother anymore.

[@tigertrail3361]

Racist!

[@flipperbooch2194]

Tiger Trail what?

[@dieselgeezer18]

@@tigertrail3361 ?

[@robinbeckford]

@@tigertrail3361 ;-)

[@thestruggleisreal9626]

It doesn't sound like he does either to be honest.

[@orbitspec9199]

I love all the hang gestures. I don't know anything about engines and I didn't think I found it interesting until I got sucked in to your videos. Fantastic work mate. You know your engines. I wish more mechanics like you lived here

[@EnnTomi1]

love this RAW content no BS straight into the point attitude.

[@90SkidUSA]

I really love your videos , straight to the point . Hope your channel make it big

[@glenndecker1645]

Very interesting. Thank you for the information. Amazed at how the internal combustion got so complicated. I enjoyed your video.

[@ibmtpx24]

This has been bothering me for years and I am not even a Toyota owner. Thank you so much for allowing me to sound really smart in front of my neighbors and family members who own Toyotas on Zoom meeting even all I could say was "there is a pin inside the engine that is making the noise..." before I lost them completely.

[@speedkar99]

Glad you found the video helpful and can visually see where the sound is coming from.

[@ChrisMuncy]

Honda Civic reference - Nailed It.

[@speedkar99]

Zoooooom ...fart....

[@johnmusilamusila1218]

Oh great content. I LIKE the way you go straight to the point. Not like other youtubers who beat about the bush to make a 6-minute-worth of content go for over 20 minutes with many uuuhuuu...ooohhhooo.....mmmmmhhhh....eeeehhhheeee.....and many unrelated stories about the hare and the tortoise going to the market to buy groceries. Very good job and good flow of content. How do you know all this stuff though?

[@speedkar99]

Thanks I'm glad you like my video style. I research online and learn as I take things apart.

[@Reeothec]

glad the rhythm of his English is probably much like his Spanish. Easy on the ears.

[@frikkieramabolo172]

Yes exactly. If it were other KZbin channels they will give a 5 day lecture about the history of VVT and the inventor and his/her upbringing,about their parents and their parent's hobbies. This is much better to the point and short and simple👍

[@jasonc2948]

Or they would show a montage of themselves playing with their cat, drinking iced coffee, never getting to the point.

[@koenigturbo5907]

you are SO SPOT ON, I really hate the You Tube vids that do not get to the point as you have said. I just watched a video where he didn't even got to point until eleven out of 16 minuttes into the video

[@marekw.9816]

Great job getting to the point and explaining the problem clearly.

[@mikezzz7885]

This guy's KZbin Channel is gonna be unstoppable in a few years.

[@streetrat6455]

Ive been having that exact same noise in a 2010 chevy traverse except it lasts more like 30 seconds on start up. This vid really helped me understand it better! Thank you

[@VladPayne]

You are a lifesaver. Thank you for the info! Had been searching for info on that rattle for like a year now

[@speedkar99]

You are welcome.

[@DJWizmuzk]

I got recommended this video just when I was about to give up on finding a solution to my cars rattling noise. Thank you so much I am officially subscribed

[@speedkar99]

Glad it helped

[@andrewsantana1660]

@@speedkar99 my 2007 chysler 300 is making the same noise ?

[@andrewsantana1660]

That same exact noise

[@philipseisman1599]

I just traded my 16 Benz for an 09 Corolla to have a cash car. I noticed this rattle and your video helped me understand the root cause. You did phenomenal at explaining everything to include the level of importance in getting it fixed. Awesome job 👏

[@BlackEmigo]

How much did it cost you?

[@tomcray7907]

Так тойота же не ломается?)) ухаха

[@noahmartinez5066]

Couldn’t have said it beyter

[@qangesiyabonga7306]

Well done my brather

[@fastfiddler1625]

It's nice to know this isn't a critical issue. As long as it works and you're not getting stuck in advanced or late timing and screwing up your hp and mileage, nothing really to worry about. I do see auto shop scam material here though. An expensive fix to repair something that isn't really broken.

[@williamjohnson650]

Will go over 200,000

[@DragonSailor-Hooah]

So it won't ruin my 2009 Pontiac vibe and leave me stranded if I never fix it?

[@Jalopymedia]

@@DragonSailor-Hooah common issue. i have a 2009 aswell. i have heard of people running the car for years with VVT rattle. no problems. and if fixed it can come back still..

[@zzoinks]

​@@Jalopymediai dont know if this is true but I swear I've heard that there's a chance that if you have the vvti rattle on a Toyota, the part or spring could eventually come loose and that would be bad to have a loose part inside the engine. But I'd look into that before really worrying about it.

[@colinlongstaff]

Hi SpeedKar, THANK YOU VERY MUCH INDEED, I have a UK 2007 Lexus GS300 with exactly the same rattle, which started around 50,000 miles and has caused me a great deal of concern up to seeing your video, (now has 61,000 miles I do not drive a lot at 78 years old). Someone told me it might be the timing chain, but the rattle is identical to your example on the tube. Thank you again you have relieved me no end. VERY GOOD Video, straight to the point - I have just now SUBSCRIBED - WELL DONE!!

[@speedkar99]

You are welcome

[@FalconNewsreel]

The best! I was a superintendent at TOYOTA KY plant. Thank you my bro.

[@speedkar99]

Nice. How was it working at TMMK?

[@FalconNewsreel]

@@speedkar99 I learned a lot about American politics. That experience had a fruit. I am now working for US DoD Japan quarter. Americans are fair and square, easy to work with. I am 79 and long flight is hard for me.

[@TheBiteSize]

A customer came in once with an Avalon that had no start issues and we went through everything from knock sensors to the solenoids mounted on top of the head and no luck. Put a replacement engine in and took the old one apart and discovered basically what this video explains except it was in between engaged and not engaged. Meaning the car probably never had any scheduled maintenance performed. Love the video. New subscriber here. Thanc a lot

[@speedkar99]

Ouch. So the VVT gear caused it to not start at all?

[@TheBiteSize]

@@speedkar99 not the the gear its self here at 3:16 you explain how the oil passage for the vvti pin can take time to build up pressure. Well with sludge and no interval services perfomed correctly, he had this rattle for years. So the inside of the aluminum housing the two seized and kept the intake cam shaft at such a point in between the two engagements it bent a few valves enough to not have compression in a few cylinders.

[@Wowzers2006]

This is a fantastic video, with a little bit of shade thrown in, thank you so much for posting!

[@jamesstuart3346]

Highly informative video...100% content, no filler

[@DeerParkAuto]

No filler....Except for his brothers old underwear and toothbrush....hahaha. Good Video!!

[@mecanicageneral615]

At the end of the day your brother made this video possible. He gave you the proper tools to explain very well about the rattle. His used underware and tooth brush. Great video very well explained and very funny also!.

[@AMGTOM]

Very instructive about VVt, way better than many "theorical" videos on the topic... Regards to your brother !

[@harryballz6358]

Now I understan man...Great Job, thank you! I heard it yesterday on my Tundra 4.7 V8. Its about to hit 400k miles last I looked so its earned a bit of noise imo. So far its only had a valve cover leak and reg maintenance/wear items done to it.

[@aussiesworkshop99]

Thanks bro. Awesome video. My 2010 GMC Acadia has rattled for years with no negative effects. I always expected it to blow up one day from this rattle but this helps me understand why it didn't ever blow up! Thanks again!

[@boydguie8129]

Nice work, you are the first guy to give great detail on this issue. My 2016 2.5 Camry does the rattle. 5-30 Castrol magnetec oil helps a little.

[@speedkar99]

Yes it's better than the 0w20 specified

[@captmaverickable]

Do 5 short Oil Change Intervals at 500 miles each. The detergent additive pack on any synthetic SN oil can dissolve the carbon buildups and greatly alleviate the problem.

[@hectorg7090]

Was about to ask if changing the oil weight could help. Thanks alot guys. Was googling this issue last year and now I finally found the answers

[@hectorg7090]

@@captmaverickable 500 or 5k

[@boydguie8129]

@@captmaverickable I also did a couple 1000 mile oil changes and used Lucas engine cleaner, 1 ounce per quart. Cleans those little oil holes some. Engine has been pretty quiet. Some say synthetic forms crystals in engine. They need dissolved.

[@michaelrazon2714]

One of the best in the business. Informative and funny automotive content are the best. Thank you.

[@7uplife67]

Excellent video and narrative! Keep up the good work..straight to the point!

[@Piso86]

Great video! My VW was doing the same noise. An oil change seems to have solved the problem now 👍

[@speedkar99]

That's temporary, the noise will return!

[@RaaynML]

Used to own a VW, it could just be the sound of the valve slamming into the cylinder head, which is a normal sound on VW engines

[@Bilalnwo]

This video was a gem, thank you. My 06 Lexus IS250 has this issue but after watching this video, I think I'll learn to live with it

[@zoro2266]

Seems like a common problem with the Toyotas

[@xls4750]

My 06 is 250 does the same thing lol, is your car still running?

[@Bilalnwo]

@@xls4750 yep still going strong!

[@HarpreetSingh-sl7zf]

Is it alright to keep it. Mine completed 130ks. If not treated ? Will it damage engine

[@politiqz2222]

@@HarpreetSingh-sl7zfyou still deal with the issue ?

[@Modeltnick]

Good content and presented in a great spirited way! Always enjoy the humor also.

[@juvy-lo4314]

Nicely, explained. Despite of my minimal understanding of car's engines, your video made it easy to understand. Subscribed and thumbs up!

[@dominiksi]

My wife's CRV had the same noise, so I sold it to my brother-in-law.

[@thetechlibrarian]

I almost bought my mother in laws crv had the same problem. But she only changed her oil based on the oil life monitor and I’m pretty sure that’s why she had that cold rattle.

[@KennyJoe01]

😂😂😂

[@brookmohammed]

😂

[@selman044]

🤣🤣🤣

[@ratrodramblin]

Thanks for the tip. Good looking out.

[@JP-xd5oz]

Thanks fore the vlog always good auto tech info love the humor as well .peace!

[@speedkar99]

Thanks !

[@nima20031]

You know it's a good day when SpeedKar makes a video

[@samtumalabar9767]

One of my Online Professors and my best one. Kudos

[@kilobravo2373]

Your videos rock man. Always to the point, and always with the toothbrush. Keep it up brother!

[@bokaboka]

A house brand engine oil flush fixed this rattle on my 110K+ Camry. I ran it a bit longer than intended (2 days) before changing oil/filter because of weather, but just wanted to mention because it saved me from the "damn that doesn't sound good" anxiety every morning, even though it's probably not that big a deal as you said

[@tamyrawilliams4797]

can you go into more detail please

[@tg6892]

Yes. Please more details so we can replicate.

[@bovellois]

I can’t comment for this guy but I used an oil cleaner (MMO) mixed with Seafoam for a mere 15 minutes before draining out the oil and eliminated the clashing noise. Worth a try.

[@shane6115]

My Lexus is300h hybrid 2014 with 60k on it every morning, always serviced on time with 0W20 oil, and you know what the rattle is staying there as it’s only a slit second in the morning.

[@davidmungai4850]

This noise has worried me for such a long time but now I can sleep in peace. My friends had crazy ideas about the noise I almost bought a new engine. Thank you so much

[@JoseMartinez-ck7nu]

Is your car still doing fine ?

[@xanthippas]

I own a 2011 Ford Edge but it never made this sound until I got it back from the mechanic after some extensive repairs related to a water pump failure. He looked at it several times and finally threw up his hands and told me to come pick it up. I've been Googling my hair out trying to find an explanation for what the problem could be before I take it to someone else and drop even more money on it, but this is exactly what it's doing. Now I think I can take it someone at least get them looking in the right direction. Really appreciate this video.

[@matthewblack8552]

This happens in a lot of Honda engines as well. Stealership quoted $600 to replace. Bought the OEM part off eBay, then had a backyard mechanic (works as professional mechanic for day job) do the work. Altogether spent about $350.

[@brianpetersen3429]

Great explanation.

[@speedkar99]

Thanks

[@153Rocko]

Great video. I have been having a Camshaft over retartant and over advance code. I have have rattling noise at cold start ups. You explained everything i have been experiencing.

[@Zspeed]

Your videos are not only extremely informative, but are also totally hilarious!! Thank you so much brother!!!

[@speedkar99]

I appreciate that!

[@InexplicableBill]

Great video! I've heard that clackitty clack noise many times in our 2008 Highlander, which now has 220,000 miles on the clock. About 5 years ago when this started, I researched it and decided to try Motor Medic synthetic Motor Flush from my local O'Reilly's (I'm not trying to plug a specific product or vendor). Pour it in a warm engine, let it run for 5 minutes at idle (NO revving!) and change the oil. Worked like a charm! It cleaned off any varnish on the moving parts of the VVTi system and the noise stops for a number of months until it comes back and I have to do it again. It's a nasty noise as you know from this video, and it resounds throughout the neighborhood. It's unfortunate there isn't a more reliable design for this. Honestly, it sounds like your motor is about to blow up. During the warranty period of the car, we always had our Toyota dealer do the maintenance. After that I started doing the changes myself, and I soon discovered a gummy buildup on the underside of my oil cap. This led me to believe the dealer had been using garbage oil all those years, so I made sure to always use synthetic oil ever since. Synthetic oil doesn't make this problem go away, but I suppose it's possible it's delays the return a bit.

[@SilkyGSmooth]

Thanks, I'll try that also

[@Inexplicable6]

@@SilkyGSmooth Depending on how bad it is with your car, you may need to do this more than once. It worked on the first try for me, but I now do it every 2 or 3 oil changes. Good luck!

[@Ye-yz7cx]

What if you don’t do anything will you damage anything in the long run?

[@InexplicableBill]

@@Ye-yz7cx Excellent question to which I WISH I knew the answer.... Fixing the VVTi system as a preventive measure would cost thousands as it's a fussy labor-intensive process project. I suppose if hundreds of thousands of people with Highlanders and the half dozen other vehicle with this motor started experiencing engine death then Toyota might do something about it.

[@chrisluquette1615]

@@InexplicableBill And at the same time, I got a recall for my 2011 Camry for a soft dash pad that would be replaced for free! SO why not something that is MUCH more important for a RECALL like the poorly designed TOYOTA VVT....

[@multirotormanish7220]

Excellent video!!! I really appreciate you making this video as I am experiencing the same rattle on start up. Just purchased a used 2010 Toyota Rav4 with 2AR-FE engine with 122K miles. Love the car and was concerned on my first cold start hearing this rattle. Unnerving to say the least. Thanks for the reassurance my engine is ok.

[@dark30welderwelding11]

You need to get a dealership to check it for you. There is a TSB that will pay to have it fixed up to 150,000 miles. Every thing I’ve researched says this is dangerous and can destroy the engine.

[@thegravitx]

@@dark30welderwelding11 I have a 2011 Rav4 4cyl with 280k miles one. Rattle started at around 140k. It has not changed its duration or caused any damage to the engine (yet, knock on wood). I didn’t know about it when it started and found out about the TSB after the mileage window. It is what it is I guess. Too expensive to repair it. I’m planning on putting a new engine on it whenever it decides to grenade itself.

[@dark30welderwelding11]

@@thegravitx It’s not too expensive. Go find the TSB just search. It’s around 2.5 hrs flat rate Parts are around $350 if you shop it. Get the Toyota OEM parts. I’m doing the intake phaser, the timing chain tensioner, the upper timing chain guide and a complete valve cover gasket kit with the O rings.

[@thegravitx]

@@dark30welderwelding11 Will do! It definitely needs replacement hahahaha

[@dark30welderwelding11]

@@thegravitx Mine is a 2010 RAV4 base with 213000. I truly think these 2.5L engines are as bullet proof as we can get. These new small 4cyl turbo engines are not going to hold up for the average consumer whose doing 10k oil changes even with full synthetic oil.

[@pierogipete3527]

Came across this while looking for info on a timing chain tensioner rattle on my 2014 Ford Explorer. Ended up finding out why my girlfriend's Honda Fit rattles on startup xD Love your speaking and editing style: It's a lot of information, but doesn't really feel overwhelming. Keep up the good work!

[@speedkar99]

Thanks, glad you like the video style. Does the Honda fit have vvt?

[@pierogipete3527]

@@speedkar99 I believe it does.

[@snortinnorton7753]

I watched a number of video,s on this subject but nobody got into the guts of the problem. After watching I think I will just let it rattle. Thankyou.

[@cccccc2165]

Brilliant ! Very insightful and super helpful depth of knowledge in just five minutes ! Priceless ! Personal experience: I noticed the cold start-up rattling sound after I had jacked up the car to change out all the brakes (front and rear) and rear bearings. Initially thought it was only going to happen the one time due to oil displacement from jacking up the car, but it actually happens most of the time and this makes sense based on speedkar99's awesome educational video. Many thanks !!

[@thegravitx]

3rd update! 01/02/2023. Car now has 280k miles, rattle has not changed its duration, remains the same since 150k ish. My only concern would be one of the plastic guides falling off due to vibration and end up messing up the chain. Update since I saw your video for the first time!! I couldn’t find my original comments under someone else’s comment. When I noticed the noise, my 11’ Rav with the 4cyl had 130k miles. Now it has 248k and has not changed (noise lasts about 2 seconds then goes away). I’ve learned to live with it and I’m getting my money’s worth out of this car. Really seems like it doesn’t damage the engine.

[@manueltalavera7877]

Dude my rav4 makes that same noise, lol not to this extent but I’m taking it tomorrow to Firestone.

[@thegravitx]

@@manueltalavera7877 Hey! These cars are known for this noise. My Rav now has 280k miles. Still rattles when cold starting but still hasn’t changed in termos of duration.

[@thegravitx]

@@manueltalavera7877 If you have the 4 cyl, I wouldn’t stress about it

[@manueltalavera7877]

@@thegravitx ohh okay, but what is the cause of it ? Ima still get it diagnosed & see what’s wrong with it, & yeah I also have the 4cyl

[@thegravitx]

@@manueltalavera7877 The cause for the rattle you mean? It’s explained in the video. It’s a pin that takes a second to lock in place due to oil sipping down to the bottom of the engine. Once it builds up pressure, pin locks and rattle stops.

[@ticani2]

So much info on this, this is what I was looking for. You rock , thanks

[@dennisthemenace49]

Our 2016 Camry has done this since 30k. We change the oil every 6k. Mobil 1 0W20.Great video.

[@godsarmy3450]

Here the trick I use to not rattle at next start. When your done driving the car , park it and let it idle for 3 minutes. At your next start it shouldn't rattle. It's been working for me .

[@wilsonemeka1833]

Tried that. Didn't work

[@godsarmy3450]

@@wilsonemeka1833 yes it stopped working for me too. The best you could do to minimize the sound is push the start button and let it crank but push it again b4 it starts so it could shut off, then just push it to start again normally and by then you have some more oil circulated 😂 screw it theres no way around it man. Its gana rattle. Car still runs good tho

[@painkillerO8]

@@godsarmy3450😅

[@subatomicparticle6535]

This is really confusing because at 3:02 of the video says "And that's where we come to the root cause of this vvti rattle this little pin over here which can sometimes wear out or be lazy to retract due to just carbon buildup". Correct me if I'm wrong but the pin is unlocked by oil pressure allowing it to Retract against spring pressure and it's spring pressure overcoming residual oil pressure that causes it to Extend out into the outer housing and lock. If it was lazy to retract then the spring pressure would be causing it to be Extended out against residual oil pressure and locked into the outer housing so it wouldn't or couldn't rattle? Also at 3:13 says "Now because this pin no longer engages with the housing (pin Extended out by spring psi into the outer housing into the locked position??) the input and output is free to move relative to each other especially when you turn off your car over night and all the oil pressure drains, there's no spring pressure forcing it to go back and click inside. When you turn on your car in the morning you're going to hear the input and output move relative to each other and that's what causes that rattle until it actually clicks in and engages for that one second it takes to build up oil pressure". Again this is really confusing because previously it was said the cause is the pin not engaging (extending out into the locked position because of carbon buildup) so why would it now engage (extend out and lock) at startup especially after it has rattled back and forth for the one second it takes to build oil pressure when it's the buildup of oil pressure that causes the pin to retract and unlocks the actuator?? My understanding of this system is the actuator should be locked when you shut the vehicle off so when you start it up after 6+ hours time that the oil has had to drain out of the actuator it won't rattle and it remains locked until either a certain rpm has been achieved like above 3000-3500 or heavy load placed onto the engine and then the ECM commands the oil control solenoid on to direct oil to unlock the pin and allows the relative movement between the input and output advancing the timing thus changing valve overlap on the intake side opening the intake valve sooner on the exhaust stroke. This system is discrete meaning it's either off (no intake valve advance) or on (intake valve advanced to one position only being 15' or 30' what have you due to the internal design of the input to output inside the actuator) and is not continuously variable. The question that I'm having difficulty with and yet to find a video that really explains the oil control valve and the flow of oil to and from the actuator vanes and locking pin in detail. Does the oil flow into and out of the vanes and to the pin at the same time or does it flow opposite to each other. So when you first start the car the oil control solenoid is off and by internal spring pressure allows oil to go into the vanes to dampen the relative movement between input and output when eventually commanded on by the ECM by rpm/load but not to the locking pin unlocking it until after the ECM has commanded the solenoid on by RPM/load achieved and then shuts the oil off to the vanes allowing the dampening and draining of oil from the vanes. If it works this way and it rattles on start up until oil psi has built up then once the oil psi has built up it wouldn't unlock the pin allowing the the input to move relative to the output at low rpm which isn't when it's supposed to be activated. This part of the system has yet to explained well in detail on any video.

[@shockbay3387]

Short and Sweet!! You are the man! Nice job! 👍👍

[@ZFnr4y058mr]

Had this issue on my Camry as well except the noise lasted for a lot longer. Didn’t go away until I started driving. I changed the oil control valve and that fixed it.

[@joejoejoejoejoejoej]

I hope your brother is aware that you’re finding uses for his stuff!!! 😂 The ‘ combustion engine ‘ is an amazing piece of engineering , isn’t it?!

[@ineedstuff8286]

i cant believe how amazing it is... especially those rotary engines... that thing looks like it is from outer space

[@1corvair2]

Is there an active recall on Lexus's for this? I appreciate yout time and enjoy your channel, lots of good info on various mecanisms, so thanks for doing it. Bob

[@speedkar99]

Yes I researched it a few years ago when buying my GS350

[@chapn7]

@@speedkar99 does the 2.5L is250 engine have the same issue as the 3.5L 350?

[@MagmaMorph]

@@speedkar99 Ive also got a gs350. Whats the best preventative maintenance to stop this noise? Regular flush and oil changes with full synthetic?

[@2jz4life35]

@@chapn7 Our IS250 does the same thing.

[@tennesseenola]

Thanks for the superb explanation of the VVT rattle. I now know everything I need to know about the noise my car makes, and I can make an INFORMED decision on my vehicle. I'm betting that your brother is older.

[@loadmasterc141b4]

That was the most direct, to-the-point explanation, complete with humor (my brother's underwear/toothbrush)! Amazing!

[@speedkar99]

You are welcome.

[@tomm2271]

Very informative Mr speedkar, thank you. I own a 2017 Camry (4 cyl) and a 2007 1.8 Corolla . Both cars very low mileage but a lot of short trips which isn't ideal I know. I change the oil every 3K to 5K. Is there any other way to help prevent the wear of the spring loaded pin you were showing us? The Corolla only has 40K and its very quiet other than terribly cold mornings. That's when I can hear some noises...a few rattles and knocks. Any recommendations or keep doing what I'm doing? Do you like the new GF-6A oils.. should I try that in the winters?

[@speedkar99]

You are welcome

[@wills.5762]

Little late to the party here but its really a non issue with toyotas lol. Idk about the camry but the corolla will fall apart around that engine. If you must make frequent short trips, make a point to go out and bag on it at least once a week. Do a few 0-60mph pulls wide open throttle to get the oil hot, and evaporate impurities like water or gas that accumulate and contribute to sludging

[@neillellman1915]

Awesome video! Thanks for all the great content, you really explain the mechanics of components really well! Great humour too...hopefully your brother doesn't miss his old underwear and toothbrush😂

[@kevinbasilio909]

THANK YOU. I've had that rattle in my corolla for quite sometime now. About a year and half probably.

[@JoseGarcia-ru1hg]

Great info! actually my father in law's Camry is making that rattle and he was wondering what that was.. 🤙🏽you are awesome !

[@mutoryu]

Changed this dephaser pulley on my renault intake shaft. Now after 7 years, hearing this noise again some times.. Maybe on next timing maintenance will change it again

[@speedkar99]

What vehicle?

[@mutoryu]

@@speedkar99 renault megane 2 with 1.6 engine

[@hostilityy]

3:34 what do you mean build up oil pressure? at idle when just turned on. Isn't that pin only clicked in there by centrifugal force at idle or prior lock before car was turned on? doesn't it only have oil pressure in there when there is demand from the driver pressing the pedal much?

[@thehumbleonez4030]

Great video speedkar..bro i have learned so much watching your videos

[@futureboot6551]

This is a really great explanation. My Vauxhall/Opel Astra has this problem. Common on GM Z16XER/Z18XER engines. The solenoids look fine so I'm going to leave the phasers alone unless the noise gets a lot worse.

[@speedkar99]

Thanks

[@bernardaflores1720]

On any cars w/VVT's, I would avoid extended oil changes and follow the recommended oil weight for that engine. I see too many folks still trying to use 10-30 or 10-40 oil weight on these engines. VVT's LOVE and need clean oil to work properly.

[@marvinumanzorzuniga79]

Que aceite puede llevar un toyota corolla 2014 automático 1.8

[@bernardaflores1720]

@@marvinumanzorzuniga79 Rebisa el manual del dueno o la tapa del aceite.

[@bernardaflores1720]

@@marvinumanzorzuniga79 creo que 5-20

[@joekrim6557]

Starting by using OEM toyota oil filters will help. Keeps oil from draining back to pan overnight.

[@chadchristian3704]

Bingo ! That sound occurs with a dry start due to oil draining back down in the pan. A high quality oil filter will have an anti-drain back valve to help prevent this

[@edanshutz8889]

New to the channel. Really well explained and demonstrated. Excellent work.

[@daxmac3691]

These videos are FANTASTIC......you are the DOCTOR and surgeon !!!!

[@speedkar99]

Thanks

[@theusedblink]

Dude you're such an amazing mechanic. I wanna see you, Scotty Kilmer and Chrisfix go head to head working on an engine. I think you'd take em both out.

[@user-hd1qx2bd1r]

I'd love to see them all working Together like a Team, on a big Car problem, probably be scary fast!

[@chrisbradley1192]

My '09 Pontiac Vibe (1.8L Toyota engine) does this. I've found that (on cold mornings) if I turn on the ignition and wait 5 or 6 seconds before starting then the rattle doesn't happen.

[@LuisGuillermoMoreno]

Exactly the same thing happens in my 2005 1.8 corolla

[@RattleBoxMedia]

🤣🤣I can't thank your brother enough for donating his used items for your videos! Super great guy! Maybe he has some pajamas that he doesn't need anymore. Great content and straight to the point. Thanks!

[@dr3aaa]

Thank you man First one who explain this problem perfectly

[@jw5356]

Well i've got over 300k on my 08 Corolla now. I think I'll just Learn to embrace this noise as comforting and familiar sound. Almost like the smell of an old leather jacket.

[@PhilBourgeois]

Colgate now what’s going ? Oral-b dropped out of sponsorship?

[@nima20031]

No, his brother ran out of oral-b

[@PhilBourgeois]

Nima Jafari 😂

[@speedkar99]

Oral B is my wife's toothbrush. Colgate is my brothers

[@RaymondLo84]

speedkar99 hope not ur ex wife now, i won't be happy if my wife takes my toothbrush to clean the car

[@shreda125hilux7]

Great video as always. Well done sir

[@zachclayton8825]

This video is amazing. A lot of information in a short period of time and made me laugh through out 🤣

[@happydays4551]

your brother must be like "where did i put it, i thought it was right here"

[@robertgestier2013]

This is a design flaw. As you mention at 3:22 there's no spring pressure to force the cam to return to the startup position when the oil drains away. They should get rid of that lockpin and instead have a return spring system, like a clockspring, alongside the oil chambers. No more rattle, and no more lockpin wear. That's my solution.

[@chadchristian3704]

Sounds good. I also thought that sound occurs with a dry start due to oil draining back down in the pan. A high quality oil filter will have an anti-drain back valve to help prevent this. What do you think?

[@speedkar99]

Yes some engines have that giant spring on the outside. Like bmw vanos

[@whoguy4231]

Thanks mate!!! Learn something new everyday!!!

[@callmebackfriday2]

Thanks for the video. That "noise" bought me here. 👍

[@PoneyBirds]

Can you hear that quietness? It‘s the sound of one million whiners on the internet suddenly shutting up. Well done!

[@danielwachirah5750]

"... brother's old underwear" 🤣🤣🤣🤣 you're funny

[@xcobraslayer8203]

Have a 2004 f150 5.4 3v which does this every once in a while. I thought it was the vct solenoid and I replaced them and it’s still doing it thanks a lot

[@youtubechannel-ms8do]

brilliant video well made and explained... thank you for your time and effort in making this video

[@hookups300]

At what point does this rattle cause a problem with the cars ability to drive? How many miles can the car go with this rattle? Is there any additive to use?

[@irvingaguilar5860]

My Dad's 12 Toyota Camry Se 4 Cyl, began with this rattle at around 140,000 miles. He still drives it daily back and forward and is today above 205,000 miles. But will consider in fixing this issue because the noise is annoying.

[@donutdan1508]

My 4.0 engine in my Explorer has done this for over 100,000 miles. Its serving as a yard plow now and rattles for minutes when first started. It sounds horrendous.

[@OhPhuckYou]

@@donutdan1508 That's the chain tensioners and or guides. Those 4.0 V6 engines are known for those issues. Fun part is that the timing chains are on the back of the engine. Many Ford's from the 90's and early 00's when they first went SOHC have tensioner issues. There is a o ring on the back of the tensioner where they mount to the block that usually blows out. My first car was a 95 Grand Marquis that had a slight rattle on start but almost completely went away with Motorcraft oil filters. I had a 04 Expedition with 336K that rattled like mad on anything approaching a cold start but never gave up and ran like a dream once she built oil pressure. The 4.0 V6 are the worse offender for bad tensioners and are the hardest to fix. They will usually run for a long time with the rattle, but the timing chain will eventually let go. The 4.0 doesn't have variable valve timing so that's not the rattle, it's the chain tensioners.

[@donutdan1508]

@@OhPhuckYou Hey thanks for the reply and the info! I still use the Explorer lugging tools around the farm, plowing and for hauling out firewood. It rattles hard on startup but still does the work required of it. I'm getting ready to move and will probably take my plow of and scrap the truck. It's been a tank and if it wasn't for the rust it would have made it to 300k no problem. Take care and be well Donut Dan

[@afocus]

Exact same noise on my 2014 Honda CRV

[@tehgibbles8314]

Vtc actuator is your culprit. My crv does the same thing lol. Honda has a tsb on it. It effects pretty much all their 2.4 engines

[@Andrea-rg9tr]

@@tehgibbles8314 I just bought a 2014 Honda crv 2 days ago never listen to this rattle noise until today. When I bought the car was already on so no rattle noise cad was warmed.I have been looking in the internet and there is a lot of people complaining about this issue and they have changed the VTC actuator and months later they have the same rattle noise when is cold. If we do nothing about it can this eventually damage the engine or not?

[@carloschavez8922]

Dude is smart but failed to mention that if vtc actuator fails will eventually cause driveability issues with engine timing and engine timing is critical when they cam damage valves if not timed correctly

[@tehgibbles8314]

@@Andrea-rg9tr I forget what code it is but when the vtc actuator actually fails it will set a check engine light. And yes it will cause drivability issues when it does fail.

[@Andrea-rg9tr]

Thanks. I was able to returned the CRV back to the dealership I made a big deal they didnt want me there making a big fuss so they gave me my money back. I loved tr CRV though if it wasn't for that issue. I'm not sure which small SUV to buy I dont trust Dealerships

[@ferfrdfsfwf]

Excellent explanation. Great video!

[@kittypigeonclueless5566]

Man, this guys knows his stuff. But it's not just that....He knows how to explain it concisely so someone stupid like me can understand. Well done!

[@speedkar99]

Thanks! Visual learning is the best.

[@kittypigeonclueless5566]

@@speedkar99 You say you are located in Canada. Are you in Toronto? If so I'd like to know if I could send some business your way.

[@pod9363]

It would seem that maybe even a couple oil changes with MMO would help free up that VVT pin as it would a lifter or something.

[@ericpircher]

@Pod Thanks for the suggestion. I've added 20% MMO to my latest oil change as an experiment. Will report back if successful.

[@ineedstuff8286]

@@ericpircher what's mmo?

[@ericpircher]

@@ineedstuff8286 Marvel Mystery Oil. For the record, the experiment did not work; the rattle is still there after a month of use.

[@Argedis]

So would it ever get to the point where the VVTI fails completely and no longer engages to default correctly? I'm guessing the engine would run very poorly and probably throw codes

[@mutoryu]

It will lose oil pressure with time because of wear on inner walls and this will affect performance..

[@speedkar99]

Yes it can really mess up timing at that point but only to the 15-20 degrees it's allowed to rotate

[@triplep4567]

Best video on KZbin explaining the cold start rattle. I just wish I hadn't done all that work to swap my phase gear back in 2018.... ugh

[@ineedstuff8286]

i changed my starter motor to no avail as well. At least i feel like more of a man after that job :D

[@boogaalu5235]

Thank you so much !! now the noise makes sense !! ive had the noise for over 4 years and its gone away now that i moved to florida i understand the root cause is in the oil and ambient temperature since the oil does not get excessively cold in florida the noise has completely stopped and sounds like a gem. now i have to address the transmission also slipping on second gear. i have 2011 Toyota Venza 2.7L i really thank you for your video

[@speedkar99]

Good to know it doesn't happen in warmer climate