How to EASILY Diagnose Engine Connecting Rod Knock! Spun Rod Bearing

Freddy shows you how to diagnose engine connecting rod knock or spun rod bearing and goes through the steps to find out if it's a connecting rod knock, and which cylinder it is.
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[@lh6955]

Love the way you did the step by step with this AND got really close with the camera to show us. I could actually do this myself with the right tools.😊 I love learning car stuff

[@Foshogi]

i loved it so much thats all i do is build my car. true happiness

[@RallyLancer95]

Knock knock. Who's there? Cylinder 3

[@NotSoCrazyNinja]

I can imagine a mechanic saying this to a customer. Mechanic: Welp, I have reached a conclusion. Customer: ? Mechanic: Knock knock... Customer: ... Who's there? Mechanic: Cylinder 3, you have rodknock. Customer: o_o

[@joey0618]

kzbin.info/www/bejne/o4XFfYNvi8p2bqM

[@siuleopouesi5794]

🤣🤣🤣

[@sophea9253]

🤣🤣🤣🤣

[@Yomouf22]

Dude wow this hit so hard just now

[@mojo_m7436]

Great video and great tip!! I really like how you put together the clip--editing and close-up!

[@ORego-em8yf]

Great video my man! Kudos for taking that challenge, enjoyed it much! And it was cool to see the extension used to find rod knock!

[@PoorManMods]

Thanks!

[@Boz1211111]

just found your channel thans for the info im diagnosing my lawn mower... hehe poor mans mods heheh lawn mower...

[@richardprice7107]

Cool...thanks for the simple test.

[@jessejaviangel]

Great informative video! Keep up the great work.

[@DiegoGarcia-nk8vz]

very helpful and brief. thank you much

[@04RFMCobra]

Just found your channel, glad I did!

[@PoorManMods]

Thank you! Please subscribe a

[@sadboycali]

I'm so glad I found your channel. I subscribed. Keep doing what you're doing!

[@PoorManMods]

Thank youuu!

[@cb2832]

used this method on a 2004 corolla, found cyl 4 had bad slack. Thanks!

[@bobanyfingelf]

Great video bro!

[@neilgreen7613]

Great video. Thank you for taking the time to make it.

[@PoorManMods]

youre welcome!

[@mykline1]

Good troubleshooting. I like the way you found out which cylinder had the rod knock.

[@PoorManMods]

Thanks!

[@sherabpuntsok2418]

Very good tip ! ! !

[@koso0423]

really cool! very helpful!

[@gothamems5628]

Awesome channel my friend!

[@jesseschlenker7076]

Thanks man worked great on my John Deere!

[@matyLSX]

Great channel.

[@PoorManMods]

Thanks!

[@TheYoyo2369]

Your videos are awesome, man thank you!

[@PoorManMods]

Thank youuu!

[@stephenkulawinski4200]

First commercial I think I've actually enjoyed ever on KZbin

[@PoorManMods]

What was it?

[@hanzelalvarez4032]

like this guy! Goes Detail by detail very helpful

[@PoorManMods]

Thank you!

[@fli9614]

Thanks a lot!

[@MrBojangles901]

Brilliant! Few will share this information. Thank you.

[@PoorManMods]

thank you!

[@WelcomeToDieBaby]

Thanks really man for sharing this method..

[@PoorManMods]

Thanks for watching

[@AsianTechnic]

Yes nice explain also good experience

[@bodhizatva]

great video, thank you for the help.

[@PoorManMods]

thank youuu

[@BilobateMadusa]

By heart feels that start up

[@Spnfirearmsuglymom]

Love your channel bro

[@PoorManMods]

Thank you!

[@Spnfirearmsuglymom]

Poor Man Mods :)

[@kevinswaby5733]

You are a genius

[@PoorManMods]

Thanks 🤓

[@user-oy6qn8bl9v]

Great information, thank you sir!

[@PoorManMods]

Thanks!

[@ghanatekton8459]

Excellent video thanks. I have more understanding of the sounds. But it’s hard to hear what your heard. But I’m not as exsperienced

[@tonycstech]

Poor man doing everything him self is my kind of club. Thank you.

[@PoorManMods]

Thanks!

[@abisismael1343]

Interresting. Thanks

[@barbossajacksparrow9481]

Nice video, thanks

[@forestghost7]

thanks Freddy! gonna try this on a 50 yr old 1.8L pushrod 4cyl motor w/ a "ticking" knock below the valve train (noise is not valves). gonna be tricky; spark plugs are not directly overhead, they're at 45 degrees. Car is a 1970 MGB with 250,000 miles.

[@twosnjuk]

This was great ... Thank you.

[@PoorManMods]

Thank you!

[@mortifiedbmx9282]

Thank you very much this will be useful for tomorrow to check my engine that i just installed and rebuild smh 😂😂

[@PoorManMods]

Thanks for watching!

[@gilvngs]

Omg it worked my #2 is moving on my sonata

[@rayg3074]

good info

[@davidbuchanan5602]

Nice Video!

[@PoorManMods]

thanks!

[@SailingHighSeas]

Good video

[@thesquirrelchroniclesakare7808]

Haha.... Wonder if CJ's know any of this stuff ? Great job bro

[@PoorManMods]

Thank you!

[@RodknockRhett]

Easier to do this old school trick. Unplug one coil or spark plug wire (depending on your car). Start it. Does the knock sound quieter? If not, repeat for each cylinder. If it never get's quieter, than it must be something else.

[@warrenlancaster8045]

That’s only for rod bearings. Main bearings won’t differ

[@jasonamerica7618]

@@warrenlancaster8045 This test is only for rod bearings as well

[@zionman9149]

Yes it only the rod bearing

[@arthurmoore1524]

Don't you have to remove opposing rod cylinder wire as well on v8's?

[@TheOfficialSoulfire]

Thank you I'm going to try this tomorrow

[@barraswap3478]

just bought a 94 Pajero not sure what there called in north America anyway going to use this trick to see if it has connecting rod knock thanks for the infomation defiantly earned my sub

[@LyfUninterrupted]

Is there a way to diagnose a bad piston wrist pin? Engine shop is telling me my Triton V10 has piston skirt slap on #6 cylinder which requires a new engine. Compression is fine and the engine runs great other than the healthy knock.

[@whiteshedrecordings]

Thanks for this vid! I was able to diagnose rod knock in my sons car because of it.

[@PoorManMods]

Awesome!!!

[@austinbrodeur22314]

great video!

[@PoorManMods]

Thanks!

[@user-ph2df6fo3y]

My car makes a sort of grinding noise (semi similar to this one) but only at 2700 rpm ish. I have an 09 impreza sport. It also does it at around 1400 rpm when it's a super cold start and I start driving right away, but then it goes away when it warms up. However the 2700 rpm grind is always there pretty much, would this be an early sign of this? Thank you!

[@cbstrdst4892]

Genius.

[@bodhizatva]

subbed and thumbed my guy

[@Ockhamcool]

Make life easy on yourself. Pull the plug wires, one at a time while the engine is running. If you have connecting rod noise, you'll hear the noise go away or get a LOT less when you pull the plug wire on the bad cylinder. This is because the cylinder with the bad connecting rod clearance (which is where the knock originates) is no longer "loaded" except by the intertial mass of that connecting rod/piston. The noise will get much softer, because there is no combustion power stroke to cause the piston to slam down against the loose rod bearing.

[@RJ6AV6]

This is a faster way 👍

[@kaspertexas3627]

Dude ur bad ass this video helped a lot

[@PoorManMods]

Thank youu

[@hugoayala6472]

Great video I'll do that this weekend do you have the video when you fix it

[@PoorManMods]

We rebuilt the entire engine, the crank was even bent. No video though

[@tankarian1987]

good idea...................

[@williamcavalier]

Thanks, after listening to that Kia I'm certain my L61 is toast.

[@larryjean1217]

On god me too 😂😂😢😓😓

[@BoostedSpeedDemon]

Honestly how I've always found a rod knock, is to just pull the spark plug wire off of each cylinder as it's running, and whichever one stops knocking when you pull off the spark plug wire is the bad cylinder, and generally you can tell it's a rod bearing because if it was piston slap or a wrist pin, it tends to continue knocking even with the spark plug wire off.

[@Boz1211111]

what when i have 1 cyl engine?

[@liveandletlive2894]

Care to explain to a rookie what a piston slap or wrist pin are?

[@stonekeys6252]

I thought that's how you would find a piston slap?

[@liveandletlive2894]

@@stonekeys6252 would usually indicate either 1 but if it continues its prob a main bearing knock

[@UnicornRyder04]

I thought some knock only on acceleration? Not just while idle

[@halrhoads6194]

Top Notch Useful Tip! (But do wish you were able to go ahead and open up that oil pan in the Video) Thanks, man.

[@PoorManMods]

Thanks! Glad you enjoyed it!

[@BjornFSE]

Awesome, Informative Learn sum'n new each day.

[@PoorManMods]

Thank you!

[@jonandis3559]

nice video followed

[@PoorManMods]

Thanks!

[@stephencrabb5123]

Mine is the same Volvo V40 1.8 petrol. Lots of cleaning and sanding but can be done if your new bearing's are the write size

[@mohabuthabdoolsamad6879]

Nice advice am from Mauritius Island.If we having an issue like this? Am using Obd Torque pro am having a misfire on cylinder 4 can it be a rod knock will it recorded it as a misfire?But no engine management light is on I just get it on the application.

[@RabeaHussain]

thank you for the great tactic to figure it out , if i have big end bearing damage , i need to remove the crank should i replace the main bearings as well? and the bolts ?

[@arthurmoore1524]

Yes. And yes. Threads stretch on bolts, especially rapid temperatures. Once tourqed, true final tourqe can never be achieved again. Replace main bearings. You'll wish you did later. Also make sure you clean all the oil bores, vents, any sludge with a gasket scraper and coat hanger (wire) to be sure it's fully clean and there's no blockage. Is it still running?

[@RabeaHussain]

@@arthurmoore1524 thanx .. i replaced the engine on my focus mk2 ..it was costly to fix bad bearings, ring pistons and the head bolts got loose beacause of over heating earlier i did facing new gasket then agian head bolts got loose and i saw oil in coolant.. the head threads was damged cuz of heat ..i found a cheap engine and swapped

[@pancakecarteltv256]

Hey got a video of you fixing it?

[@DaveWatts_ejectamenta]

Nice. Only works with spark plug holes that are centrally located in the cylinder head I expect (eg not my airhead bmw), but good technique anyway.

[@Gkitchens1]

I just bought a crown vic that got rod knock. The seller told me they had ot diagnosed as a cracked exhaust manifold which I know is possible but I've pretty well. It still sounds like it's flex plate knock as it is loudest directly in line with the flex plate when checking with a stethoscope but it's characterized exactly as rod knock. I'll use your steps here to see if I can figure it out. Fortunately it has straight piped exhust and no cats so I can here it's got a strong misfire on rhe drivers side so I have a starting point.

[@devlinhumes]

Great tip big dog!!

[@ozzy5368]

Good video. Cuple questions: What if it's a bad wrist pin? What if you have a V engine? How could you do this test?

[@PoorManMods]

Not sure and not sure haha, sorry. Thanks for watching though

[@steaventuangtuang9317]

Good

[@tyronejason]

got a question im in the process of trying your method out and im not sure if im feeling it move or not but i do have a concern over when manually turning my motor over i have all spark plugs removed and its a little 1.8L 4cyl and the motor spins super easy until it gets to a certain point then it takes a considerable more effort to get it to turn then it spins suoer easy once again. i would assume that if the sparkplugs are out and there is no compression at all happening then it should spin easy throughout the crabks revolution and not get harder to turn could this be a sign of some sort of binding withing the crankshaft to pistion system?

[@durvalrebelo2624]

I hope you do another video showing how you fixed it.

[@PoorManMods]

I didn't film it but the entire engine got rebuilt, the crank even needed replaced because the knock slightly bent the crank according to the machine shop

[@ervinsrings4168]

cool!

[@FLiK773]

whats the most i should pay for a kia forte in this condition and how much will it cost to fix?

[@JohnNorris411]

You can fix that through the bottom if you remove the oil pan? Replace bearing or tighten the nuts? Or do you have to pull the entire engine apart?

[@PoorManMods]

In our case the engine had to be pulled. Needed to replace the crankshaft and 1 connecting rod. Its always good to fully remove the engine and have the rods and crank checked if youre experiencing a knock from the main or rod bearing

[@21chch]

Thanks mate. My 95 Camry just started up some knocking on the freeway … Im hoping this is the problem…. 😬

[@PoorManMods]

Youre welcome, good luck!

[@vsDrunkenYoda]

What should I type in the search inorder to learn how to turn engine manually? (2006 Chrysler town and country). Great Vid👍btw

[@ianbowline404]

A lot of times you can get a socket on an alternator and turn the whole belt and crank.. if not, pull the passanger side tire and get a socket on the crank and turn clockwise

[@vsDrunkenYoda]

@@ianbowline404 TY,can't wait to learn more.🍻👍

[@j-5087]

Do you have video of fixing cylinder 3

[@carlodonnell146]

It is easier to use that method with an inline vertical engine; but how would it work with a V-ENGINE with the cylinders on a slant?

[@MacLaw3084]

i may have missed it but to what level are you bringing the extension to when you have it in the cylinder?

[@rosewoodtxmade]

intake stroke tdc

[@SLCARSALE]

Same on my kia Morning

[@CherryTsDesigns]

This actually helped with my Honda’s current problem 😭 thank you.

[@SangheiliSpecOp]

You have my condolences

[@Your2TiminEx]

It's a Honda.....scrap it

[@SangheiliSpecOp]

@@Your2TiminEx no mercy

[@Your2TiminEx]

@@SangheiliSpecOp It's a Honda....Pile of cows shit

[@SangheiliSpecOp]

@@Your2TiminEx no pity, no remorse, no holding back

[@rlt102]

One question. I have a 2006 dodge ram 1500 4.7L so the problem I’m having is a ticking noise on my engine. It’s coming from the passenger side and it only starts ticking when the truck is warmed up. I have oil in it and been doing the oil change on that truck. Could it be the lifters?

[@AwakeningEnthusiast]

I have a 2016 Kia soul for sale with this problem. It's in mint condition besides the engine issue.

[@remenence]

Now just need the video for repairing the knock 😂

[@earl8590]

Are you pushing the extension down the sparkplug holes to feel on the actual piston?

[@PoorManMods]

Yes

[@NoMurrcyProducedit]

Is there a video on how to rotate engine

[@ToyotaCelicaDude1]

I probably missed it in the video, but, is this the 2.0 or the 2.4? 😊😊 If I'm not mistaken the 2.4 but can't fully tell

[@SailingHighSeas]

Is it good idea to use impact wrench for removing spark plugs?

[@PoorManMods]

No

[@arthurmoore1524]

Yes do it. Most are backwards threaded too

[@ptbruiser2243]

Would the noise from rod knock be constant? I have almost the same noise but it comes and goes i can tickle the throttle and make the noise come and go. The car can sit and idle for long time w/o any noise at all.

[@PoorManMods]

I'm not sure. Try the socket extension test

[@eyedea81]

Is there a 2nd video? Id like to know if you were able to fix the cylinder

[@PoorManMods]

No video, pulled and completely rebuilt the engine.

[@memesyandhorrorshorts]

I never imagined how cheap it is to rebuild a motor lol I'm currently sitting on a 2006 dodge charger with what sounds like spun rod bearing it doesn't necessarily knock but it runs rough but idles correctly with a occasional dip in rpm but that probably because of how rough it running the start up takes a sec it cranks for 2-3 seconds then fires right up the sound sounds like it is coming from the top tho but really could be anywhere lol I may be replacing rod bearings and sanding down the crank and connecting rod maybe shall see how it goes when I buy the parts and drain the oil and drop the oil pan if I can I don't remember if my car has any bars or anything in the way

[@I69Sk8er69I]

Man, so I think the slapping I’m hearing is my chain tensioner because the sound goes away with higher revés and I have no loss of power. Does rod knock stop with higher revés?

[@PoorManMods]

Could be the chain, rod knock will not go away to my knowledge

[@rougeneon1997]

Wow you really let that extension slam rite down on those piston tops lol. Im sure it isnt a HUGE deal though. Great tip however

[@justinrobert4337]

Nice, 4:05

[@christianorozco6897]

Is it normal for rod knock to go away when cruising only knocks on when it’s in park

[@MacLaw3084]

just out of curiosity how much longer could the engine last had you only replaced the one bearing? thanks

[@PoorManMods]

In our case it wouldnt have lasted. The crank NEEDED to be replaced as well

[@kevinc9006]

Kia has a new ecu map...I suggest fixing it and upgrading ecu program ...it advances timing to soon and damages bearings from what I've read.

[@JTB128650]

They should have done a recall on it. I hate how kia made the engines like that.

[@mentallyderanged9169]

They did a class action lawsuit bee motor all 2.0 2.4 2.4T motors. Look it up I got a bee motor for free it was a manufacture issue. The oil passages where not properly drilled and cleaned leaving debris in the block and lack of flow to the rod bearings.

[@mentallyderanged9169]

That’s false it is a oil starvation issue. They did a class action lawsuit on motors all the 2.0 2.4 2.4T motors. Look it up I got a bee motor for free it was a manufacture issue. The oil passages where not properly drilled and cleaned leaving debris in the block and lack of flow to the rod bearings. I got free towing a bran new short black and also a free rental.

[@tinapham9780]

Is this covered in the new warranty extension? I hear knocking when I accelerate up hill and it's getting worse. Sonata only has 67,000 km

[@PoorManMods]

Ask your dealership

[@micthegreasemonkey2918]

Hi buddy when i pull up 2 the lights i hear 2 knocks & only 2 that come from the left of the lower part of the engine. What could it b im thinking bearing mayb?

[@PoorManMods]

Probably a rod knock unfortunately