MY GROM MIGHT HAVE RODKNOCK!? :(

[@Killerpandahrr]

Taylor an old trick I used to chase down a noise in engine was to use a long screw driver and use it like a stethoscope. By putting the metal end to the engine and put your ear to handle. You'll be surprised by how this will help track down a noise.

[@Damiansgarage]

That's so true no school will teach you as much as you own experience! each time something breaks you learn something new!

[@maxpower700]

Manamon uhm id disagree. 3years in specialized school aimed towards cars/trucks, didnt learn nearly as much as experience alone from the point I took an interest in all things motorized, to the point I went to that school.

[@austons3512]

Poland Garage fuck off

[@CJBMAGGOT94]

Never took any schooling for mechanics. Successfully rebuilt many engines and can do anything mechanical to engines and cars. Next thing up is body work and painting...

[@Damiansgarage]

CJBMAGGOT94 I hate doing body work, mostly because most of the stuff I'm doing is on the driveway or the street lol

[@taylormccallum]

In my school were taught through experience... is this a paradox?

[@Sol.guereca]

In this episode Taylor thinks he has rodnock well because he thinks everything has rodnock

[@Zubberbilly]

No Bueno tbh that's how I feel about any car I see LOL. I'm deaf as fuck though

[@aogarage7598]

No Bueno its also good clickbait so why not? 😂

[@gamingwithb1834]

raindrop drop top I think my grom has a rod nock

[@wazzup2987]

gaming with b The rod goes knock, knock , knock, flying out the case like a rock, rock rock , rock.

[@benstakowitz3034]

everything you buy has this title...................

[@Likethetacosauce]

Ben Stakowitz not the vette

[@underdoggarage2063]

slammedlyfe actually he did post a vid saying the vette had rodknock.

[@Morganbraddon]

"My Corvette might have RODKNOCK!?" It's from a month ago...

[@greirat5365]

Morganbraddon That video never happened

[@Likethetacosauce]

Medizine well shit, I forgot about that vid!

[@300zxdriver]

Did you adjust the valves correctly? Should turn engine over by hand,watch intake valve open / then close ....then line up top dead center mark on flywheel. Adjust both valves at this time. Also I haven't checked online but there should be away to adjust cam chain, unless it's totally automatic. Doesn't sound like rod knock to me. A good way to check for rod knock is to drive it and put a load on it. Like putting brake on while giving it a good amount of throttle,or put in higher gear at slow speed with lots of throttle.

[@chriscrowder8505]

probably just needs a good ole valve adjustment. honda small engines famous for these ticks, a good, correctly set valve lash fixes em, if that the problem.

[@derickjohnson2556]

Chris Crowder b

[@zykonot]

Did you not watch the video lol.. he did a valve lash adjustment at the end and it still sounds off

[@fletcherhyslop]

+Repzol He actually still needs one. He didn't make sure that the piston was in the compression stroke when he adjusted the valves, so it just made it worse.

[@Ronox63]

Fletcher yeah it sounded better before he did anything

[@fletcherhyslop]

HusseJumala Yeah hahaha, after he gets it done though it should be totally fine

[@Coldfin9er]

Sounds too quiet for knock. Pull the clutch in, is the noise reduced or does it go away? Clutch baskets can make noise. There will either be a pressed bearing in the basket or in the engine case that could be shot. Pull the cover, springs and clutch pack (keep everything in order and watch out for any shims) and check for play / signs of wear. Edit - will need a clutch basket holding tool to remove the actual basket if needed.

[@Smallenginetech56]

did you make sure it was top dead center of the compression stroke when you adjusted the valves?

[@coltonbrown7601]

That Guy it didn't look like he did. My Honda 150 did they same thing about a year ago and I adjusted the valves and didn't get it too dead center and it made it worse the I did it correctly and it ran just fine.

[@apieceofreese48]

thats why they were "super out of spec" n rattly on start up lol

[@garta15151]

Chris Rodknock sends his regards ;)

[@megismigis6326]

yo taylor you should change the timing chain and the roller in the cylinder its typical problem in grom and other same style engines, it doesn't sound like rodknock it would be much louder and metal in the oil.

[@hotdogger8641]

98% sure its just honda valve tick. happens all the time. Adjust valve lash again, make sure its at tdc, If you wanna go the extra mile replace the chain, they're pretty common for having some chain slap too. Done this on more than one grom. Couldnt hurt to use a mechanics ear to isolate the problem either. Also dont listen to anyone talking shit about wheeling it and running it dry. Ive got a grom thats legitimately probably been on one wheel more than its been on two and its just fine. TLDR: valve tick, check lash at tdc, but its a honda, its common and trust me itll be fine even if you dont fix it.

[@toddyf12]

initially learnt how to work on motors when i was young, no family background in it just wanted to know how things worked, started on 2 strokes and now competent on all 4 stroke motors, all from the power of user manuals and youtube videos, amazing what the internet can teach! now studying a degree in advanced engine design

[@austinp988]

Classic Honda tick!! Everything I've owned that's been Honda has had the classical tick.

[@spoolinturbskies4897]

Taylor ray that's just the way Honda bikes and 4wheeler sound like

[@dylanbusby-carver3787]

taylor when setting the valves make sure that the piston is at tdc and as well it seems like there isnt enough tenstion on the timing change, may have stretched out alittle, because you if thats the stock timing chain and you said that it has the big bore kit that means that the stroke is possibly different as well so, the timing chain and and gears may need to be looked at as well as the tensioner. anyways as always keep up the great work love watching the videos !!!

[@SkylineBNR34]

How would stroke change with a different bore size?

[@mattmaxwell3504]

SkylineBNR34 In cars trucks bikes etc the cylinder bore is what the piston is in and you can have the block decked so you have a shorter or longer bore which you can also bore and hone bigger and sleeve or just bore and hone (meaning making the cylinder bigger in size) with stroker kits (dealing with the pistons) you can have. Shorter or longer strokes of the piston for combustion in side the block the shorter the stroke more air and fuel can fill the cylinder which you can also add a longer spark travel to with longer strokes less air and fuel can be crammed in to the engine and shorter spark travel which then all ties into the crankshaft and cams and came timing and cylinder head designs and heights and gaskets and so on (hope this was helpful to you and answered your question)

[@SkylineBNR34]

I know what bore and stroke is. But if you only bore the cylinder's out, you're not going to change the stroke of the engine unless you either change the rod or crankshaft. And looking up the 143cc big bore kit it is exactly as I thought. No change in the stroke with the Bore kit, so my point still stands. Why would the stroke change if your bore the cylinder out, because it doesn't change.

[@dylanbusby-carver3787]

SkylineBNR34 like what matt maxwell is saying, if the big bore kit was installed, the block and or head should have been decked a few thousands to calculate new proper compression values. and if that was done then that means that there would have to be adjustments made to the chain. its just something for taylor to look into. im not saying thats it, just throwing my oppinion out there

[@h5ibluntman]

usually with big bore kits on bikes like these they just give you a new piston and new cylinder block so there is no machining involved like in car engines. So there could be differences in the cylinder block but that wouldnt make that sound. As a few people have said it sounds like a honda motor. unless we see a video of a stock one that is know to be good running then have his running after as to compare the two

[@nickzona2491]

You made sure to check those valve clearances from tdc on the compression stroke, right?

[@matthewhickey942]

I just went back and he was not at TDC lol

[@eelvis7169]

Taking things apart is very easy. Putting things back together right is hard without experience. I've learned most of what I do on my own but having someone that knows to help is huge. I don't do well straight from manuals.

[@danielgrogan4066]

maybe the timing chain is stretched

[@Psf-ml7oc]

Daniel Grogan I agree

[@toddyf12]

it may have stretched but if the tensioner is tight then it will not be making that noise, and it looks pretty tight under the tensioner to me

[@callmetree19]

Daniel Grogan that big bore and cam if he has the matching cam doesn't stress the chain any more then stock. More then likely the top end needs a rebuild from wheelies.

[@brentpomroy3808]

Daniel Grogan +1 The single cylinder Hondas are notorious for stretching timing chains, especially if you run them at high revs for any amount of time. Wouldn't take you long to replace. Then at least you could cross that off the list of potential issues.

[@danielgrogan4066]

unless the tensioner is at its max, but that would just be my guess.

[@spoolinturbskies4897]

Taylor ray that's just what Hondas sound like all of the 4wheeler make that sound and the bikes do to😆

[@masonsmith9222]

CS4X4 83po yep. it's a Honda thing

[@TheJessemull]

piston slap

[@andy72xbox]

thats not what they sound like... if your 4wheeler sounds like that you need to adjust the valves. I worked at a dealership and adjusted tons of them.

[@masonsmith9222]

I race quads.. I think I would know what a healthy motor sounds like. valve lash adjusted every 10 hours, oil change every 5

[@zuxyr]

Mason Smith obviously you dont

[@300zxdriver]

Hi I just checked some forums and they said with these kits.They have heavier valve springs than stock and different profile cam that the stock tensioner can't cope with. People are putting spacer between bolt and spring.

[@Adriansitos623]

Check the clutch basket Taylor. I had a similar sound but mine was on my stroked Raptor. It would destroy the clutch basket after dumping the clutch a few times at the sand drags.

[@Baithehuman]

I swear your the opera of rod knock " you get rod knock you get rid knock everyone gets rod knock "

[@MrMycarrr]

When you set the valve lash was the camshaft set at the base of the lobe? The tensioner may look okay, but is it getting worn out? Doesn't sound like knock.. you would have problems with oil pressure if it was knock. Try a thicker oil to fill tall tolerances if you fear internal engine damage. Sounds like timing tensioner issues though idk

[@TomJenkinsTJ95]

I'm tempted to say it could be bottom end (main bearings) on the way out! You don't have to take the entire engine apart, but take the flywheel off again and try and wiggle the shaft it mounts on as this is the crank shaft, if theres any sort of play, whether its up or down or indeed side to side, time to replace the bearings, pretty easy to be honest however! :) (Nothing you couldn't do! :P)

[@tyranwaltees9207]

Rain drop Drop top Everything taylor ray buys has rodknock.

[@sillysloth9331]

timing chain is stretched the chain is slapping around in the motor and it will break soon then you may need new valves or piston shits gonna break when that chain let's go

[@Dj.maddox89]

I have 3 full mod race bikes (Honda's) and they all have a little bit of a tick. if you block the/exhaust from coming out you can hear the tick better

[@LemonMan_Man]

sounds like bearing rattle, as a two stroke guy sounds very familiar. Plus with a stock crank and bearings on a bbk you run the risk of making bearings shit themselves.

[@jondrak5105]

+Taylor Ray sounds like chain slap from the timing chain like on the old 03-04 kawasaki 636 bikes. They used to sell an APE manual chain tensioner for those bikes when the chain began to stretch and make that sound. Worked for me back then but this is obviously not the same engine so good luck in the diag!

[@psi2high]

FYI the newer takegawa kits all sound like this. My 181 Grom makes the same noise and when k contacted them they said it was normal. I've put over 2000 miles on it with 0 issues

[@kimtejgill5900]

ayyy the vets looking clean

[@kimtejgill5900]

what other mods are you doing to it

[@kc_stoldt_4x436]

Sounds like timing chain is Loose but most ohv engines have a little clatter

[@tct72]

Could be the primary chain between the crank and transmission. Put it in first gear and watch the front sprocket while rocking the back wheel to see how much play there is. Another test would be to hold the throttle at the point it rattles the most, pull the clutch in and drop it into first to see if the noise gets better or worse.

[@Likethetacosauce]

Maybe using the stethoscope method to pin point location may help some.

[@r32silviatech]

I'm a motorcycle mechanic just for reference. Prolonged wheelies can starve the bottom end of oil. It sounds as if that is your problem. I've seen alot of these kinds of problems on sportbikes. I'm sure it is a common problem on these bikes as well. So the aftermarket will most likely have some kind of answer. It will probably need to be rebuilt.

[@Mowerguy94]

rain drop drop top taylor always has rodnock

[@maxpower700]

tidbit; the Honda monkey engines, and the Chinese copies, have a tendensy to change the lash on the valves by themself quite often. check them regularly since they are so easily accessible. or end up like me, stuck at a red light with a bike that refused to run/or start. was kicking on the kickstarter until I had destroyed my foot and rubbed the skin off my sole. I later found that the entire nut on the intake side actually had backed all the way off, and was just laying there, allowing for the valve to adjust however.

[@jeep2003]

are you sure the exhaust isnt leaking. sometimes can be misleading. You can check for rod knock most of the time pretty easy. just turn the wheel so its pulling the piston down then push the piston down with a screwdriver or something through the plug hole. If it clunks youve got trouble

[@collins556]

Honestly that sounds like every dirt bike I've owned, was this something you just started to notice or it just happen all of the sudden.

[@robertcrow24]

the sound of a rebuild in the very near future...but don't worry most little one cylinder setups are pretty cheap and I actually enjoyed building them....actually just check its not in the clutch

[@assassin879]

timing chain might have stretched similar problem with the 1.8 bmw 3 series (it would end up skipping a tooth in the cog) replace the chain and the spring tensioner it sounds like the chain smacking against the tensioner

[@skyaustin01]

Timing chain looks kinda stretched, but that noise is either piston slap or rod knock. Quick way to find out is to put a couple grades heavier oil in and start it to see if the noise goes away or quiets down. If it quiets down your gonna have to tear it down and replace either rod bearings or the whole assembly depending on how this motor is put together. The heavier weight oil will take up some of the clearances caused by worn rod bearings.

[@keelerracing]

timing chain may be worn out but it sounds quite a bit like rod knock or piston slap. you might pull the head and cylinder and you can actually check for a loose rod... will need a service manual for reference on stuff but it's pretty easy. good luck to you Taylor

[@Bgb.productions]

That sound is somewhat normal for a Honda, but a couple things you need to look at is one the stretched tilting chain, and two, you need to make sure you get that flywheel/omature real tight on there or it will come look and shear the keyway on the crank shaft

[@nbfelipe1662]

sounds like lose tensioner spring. spring may have gone soft and when you adjusted valve clearance you rotated cam to closed positions first like you would on a honda motor. or timing chain may be going soon

[@cbzone9]

I swear this man cant have anything nice, everything he has he breaks!! welcome to my world

[@StealthyWolfDaddyWerewolf]

If you have internal damage, run a magnet through the old oil to determine the debris and damage. If you find allot of shavings in the oil on the magnet. You can determine if there is problems. I usually cut open a oil filter or run a magnet in the old oil if there is a problem with a car or transmission I am working on. You would see a clump of shavings or metal debris during engine failure.

[@davidchandler2993]

I would check to see if the timing is set right, then check the tension specification on the timing chain to see if its worn out.

[@rexrunner]

hit the nail on the head with experience and learning brotha!! great side note

[@Cyr_S]

I usually do everything myself on my truck but like 3 days ago, I blew a plug outta the engine on a 5.4 (turd) ford and the mechanic asks for like 600$ for the repairs, damn it's cheap to go the dyi way ahah

[@billschneider8392]

Taylor did you make your beginning song??? I don't know if this was discussed before or not? I've just always wondered.

[@Kyegar]

And it wouldn't be a bad idea to check all the major bolts torque. I know on my drz the countershaft bolt, counterbalance nut, and the stator bolt all are known to come loose. Just loctite them and torque them down. I'm sure you've done it already, but check the forums!

[@Lebis150]

I don't know a whole lot about bikes, but I sounds like your timing chain has stretched and nicks something while it's spinning, sounds pretty consistent

[@ProcessHF]

Taylor could buy a microwave and think it has rodnock TBH

[@clutchkicking240s]

well motorcycles have a actual roller bearing in them should not be rod knock unless that bearing is failing. I don't know on groms but normally that doesn't happen. the bike has a big bore kit u are probably hearing piston slap. that is commen in big bore kits. motorcycle engines when u step up massively in bore size. that's my 2 cents on the subject. could be wrong but with out being there that's my guess.

[@thomasholloway1627]

who was the dude in the wheelchair? you didnt introduce him

[@TheJessemull]

piston slap sounds like my 4 Wheeler had the same noise everyone said timing chain and valves but I replaces the valve seals and put new piston and rings

[@robinhood45218]

Taylor it might be piston slap honestly. in which case if it is the noise will actually get quieter after its warmed up. If it is piston slap from the big bore kit you should be perfectly fine. hopefully its nothing major

[@bmx4free]

If Taylor makes a shirt ever it should say "i think it has rodknock" or "i think you're a rodknock" or even "can i rodknock you?"

[@likesototallymatt]

I really enjoyed this video, keep up the great content Taylor !

[@matt-roden]

It could be a valve train issue. I thought in other videos you mentioned this bike was bored out. Theory is whoever put the motor back together didn't have the timing correct. I'm not saying it being off by several teeth, but a half or one tooth past the timing marks in the direction the engine rotates. This can get overlooked pretty easily if all the slack in the chain is not on the tensioner side. Once tension is put on the chain, it hops a tooth or two. I'd be leaning more toward the chain stretch theory though as this is now becoming an issue. If it was off half a tooth past the timing marks when it was last worked on, and the chain could have stretched and it now off by one or more teeth. Spark notes: Make sure timing marks line up.

[@AbusementPark]

sounds like tappets a bit common on 4 strokes before timing chain

[@henriquebertuol7220]

next video: my rodnock might have rodnock :(

[@SOLOIIguru]

Dude, I have beaten the shit out of my Grom for over 8K miles and it's still fine. It's a Honda. Ride it. Beat it up. Don't worry about it.

[@PiazzaWoodWorks]

Piston slap , very common with a skirt less piston that takegawa kits use ,

[@JellyForSale]

The issue i see with used groms in the future is that they'll have WRX syndrome. The people that originally bought them will have beat the hell out of them and they live (especially Groms) at high RPM all the time because they're affordable (for what they are) enthusiast models.

[@randl3sx125]

Taylor sounds like somthing is loose inside the engine to me though to check if it's the crank get timing lined up take cylinder head off then barrel it's really not that difficult u can also see what shape ya piston is in too

[@dylondeatley6027]

Are you sure the ticking is not normal? Perhaps with the bore kit? My old Ninja 500R was suppose to sound like a "Industrial Sewing Machine" when the valves were properly adjusted. Sounded just like the Grom does. Also, your videos are amazing! Keep 'em coming!

[@matteogigliotti6080]

I have a suzuki ltz 400 that was making a similar noise and I replaced the timing chain and tensioner guide as well as checking valve clearances (they were in spec) and the noise improved alot but it still sounds a bit ticky! I think its normal and so does my grandpa who was a mechanic for 30 years. If i were you id try putting a new timing chain in and that should help improve the issue!

[@KoltKOfficial]

Run the e4 code displayed, not sure entirely I just work on Honda dirt bikes but definitely recheck valve with engine tdc compression and the clutch basket, if there is any ridges in the basket replace it, it cause the clutch to catch and smack the disks together

[@RCNITRO11]

I would have thought it was the gearbox

[@streipsgjen]

Did you put the engine in tdc? If not, put it in tdc and adjust valves

[@InfinitygamingFtw]

Sounds like either piston slap or rod knock. If you feel like diving in check the connecting rod bearing. You have a big bore kit so if its still the stock connecting rod maybe it spun the bearing. Kitaco makes a forged connecting rod.

[@c0mpr0mised]

Check the clutch before tearing the engine apart!! The basket can get loose sometimes.

[@Thille18]

Well i guess you checked the timing chain?Is it tight enough? I have an old Yamaha and it sounded like a bag of nails when i bought it, I tightened the timing chain and it sounded fine. Also there might be some plastic guardrail thingys that keep the chain in place and protect it, check them too.I don't know if a Grom has these though...

[@michaelcrawford6088]

i work on small engines alot taylor ive found in some of the dirtbikes and fourwheelers ive worked on. the timing chain can stretch over time and they will get slack in them

[@martinallanhates]

you couldn't be more right i went from not knowing how to jack a car up to changing all the suspension and breaks on my clio

[@MegaLamaGangster23]

The curse of Chris rodknock

[@andrewkillen4375]

Is rod knock when the piston moves around to much in the header thingy? I have no idea what I'm talking about

[@oldblue101rf]

just a question did you tdc before adjusting the valves? sounds worse after. my 2 cents both valves have to be closed and not open to adjust.

[@harleyguyinmilw]

are you sure the exhaust valve was adjusted at the proper position? it would have been "tight" if the rocker was holding the valve open

[@mikehoving6361]

Id recommend check the clutch basket. Might be extra slop between the basket and clutch disks, also im sure you knew to set the engine to tdc on compression but didn't see it in the video. If not the exhaust might have been just starting to open and that's why it was tight. Hope you figure it out.

[@corymcclain5988]

big bore without a crank upgrade is never good...just keep that in mind

[@matmuffin1]

Do groms have a counter shaft sprocket? That sounded just like my dirtbike before I went in there and tightened it up

[@Kyegar]

Dude, I thought the same thing when I bought my DRZ. Motorcycles engines are more mechanical and therefore make more noise. Most of the time, it's not a big deal to hear a noise. Unless its obnoxiously loud. Good luck

[@MrHog10]

sounds like a motorcycle i think he just like taking things apart for the hell of it

[@lucasbaldwin2852]

check where the exaust is the cover for the exuast bolts could be loose

[@muzzysworldnt5955]

That happened to me when I put the dcr 2 cam in with the bigger valve springs. I put the stock springs back in and it instantly fixed it. I've also tried the cam chain tensioner button first.

[@docsgearheadgaming2503]

Bent Con Rod maybe? clipping the crank as it comes around? Bent valve? Not seating proper. But it sounds almost more bottom end on the video

[@dylannewby402]

hey Taylor that's the best thumbnail I seen for a while

[@johnstrh1]

My neighbor went to WyoTech, learned how to build a birdhouse and a candy dish and my dad still fixes all his shit. School aint everything lol

[@FstrEdits]

piston slap? big end bearing destroying itself? crank bearings rumbling?

[@lildrumrdude]

Ahah lol your bike is perfectly fine. My CRF450 makes the same sound. 🤜

[@jasonalmont7572]

Experience is it exactly. Once you understand how things work it gets easier to work on everything. Repair don't replace

[@shawnthomas5557]

this might sound crazy but i know many machines that have that sound and they run strong for a long time im pretty sure its just the sound of the timing chain moving the tensioner

[@worldofrofl]

that''s how singles sound. I have a 250 Yamaha that sounded like that when it was new. Even my dad's 650 Honda sounded like that when it had stock exhaust.

[@kissmyfazos]

Taylor keep doing what your doing. I've been here since 10k

[@billschneider8392]

timing chain is stretched causing eradic timing in an adjustable engine. it in turn stretched your intake valve. that's why it's soo loose.dont run the bike anymore until you replace the chain. replace the tensioner, new gaskets. double check the valves after you replace the chain. I'd replace the valves, but that's me.

[@KyleKick909]

i'm pretty sure adding a turbo would fix it.