Cooz93 66 Posted January 12, 2014 Report Share Posted January 12, 2014 Hi all, started the car after about a week of it sitting still, and it's suddenly developed a loud tapping noise from beside the timing chain. At first I thought it was a valve tapping, but it sounds like it's on the outside of the engine compared to inside. Would a collapsed bearing in any of the tensioners for the chain do this? I will try and upload a video later, how do I go about that?Cheers guys! Link to post Share on other sites
Lukey. 381 Posted January 12, 2014 Report Share Posted January 12, 2014 They don't have bearings, there are slide rails and the tensioned use spring and/or oil pressure. Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 Shitttttt. I'm away to upload a video. Really have no idea what it could be if it isn't a bearing=| Link to post Share on other sites
ssaunders 199 Posted January 12, 2014 Report Share Posted January 12, 2014 Hi, when I had my chains done at 120k one of the tensioners was in bits. There are lots of vids on YouTube for timing chain sound, usually the chains are good it's the tensioners that wear out. Good luckS Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 (edited) Did that work guys? Edited January 12, 2014 by Cooz93 Link to post Share on other sites
Nex 17 Posted January 12, 2014 Report Share Posted January 12, 2014 yeah it works dude, not sure what that noise it though Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 Cheers. Ye I know it's a weird one. Sounds like belt/chain related. Anyone else got any ideas? Link to post Share on other sites
ssaunders 199 Posted January 12, 2014 Report Share Posted January 12, 2014 Hi, definitely sounds like chain related, have you checked the tensioner bolt moves in and out ok. Only other thing round there is the aux tensioner but that's more of a bearing squeal.Good luckS Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 I'm taking in to work tomorrow to have a proper look. Was dark when I noticed the noise last night. My boss is in to his vw's aswel so hopefully he will have an idea. How much would I be looking at for parts if I had to change the tensioners/chains? Link to post Share on other sites
VR6Pete 1,455 Posted January 12, 2014 Report Share Posted January 12, 2014 Sounds more like the water pump to me. Club Chairman Link to post Share on other sites
cactusjackslade 146 Posted January 12, 2014 Report Share Posted January 12, 2014 you say the sound is coming from left hand side of engine? and your video also shows the left or alternator side. the chains on the vr6 are abit different to most other engines, they are on the gearbox side. i know sounds like this can be hard to pinpoint as they tend to ecco around the engine bay. if the sound is definitely coming from the left then it steers away from chains. VR6Pete 1 Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 What the best way to diagnose what it is? It didn't sound as bad when warmed up tonight if that helps? Will just be a case of changing then tensioners and seeing if it that solves it? If not change out the water pump? Link to post Share on other sites
Cooz93 66 Posted January 12, 2014 Author Report Share Posted January 12, 2014 you say the sound is coming from left hand side of engine? and your video also shows the left or alternator side. the chains on the vr6 are abit different to most other engines, they are on the gearbox side. i know sounds like this can be hard to pinpoint as they tend to ecco around the engine bay. if the sound is definitely coming from the left then it steers away from chains.Thanks for that info! Didn't realise the chains were at the other side. Haven't had a chance to look yet due to lighting issues. I reckon it's a tensioner of some kinda. But could be the water pump as Pete said. I'll have an in depth look tomorrow and see what it could be. Hopefully nothing major. VR6Pete 1 Link to post Share on other sites
cactusjackslade 146 Posted January 12, 2014 Report Share Posted January 12, 2014 Thanks for that info! Didn't realise the chains were at the other side. Haven't had a chance to look yet due to lighting issues. I reckon it's a tensioner of some kinda. But could be the water pump as Pete said. I'll have an in depth look tomorrow and see what it could be. Hopefully nothing major.no problem, let us know what you find! Link to post Share on other sites
VR6Pete 1,455 Posted January 12, 2014 Report Share Posted January 12, 2014 Screw the tensioner bolt in to take slack off the belt and spin by hand your pulleys to see what doesn't sound right, to me it's not just a bearing noise, sounds like something catching when rotating. Club Chairman cactusjackslade 1 Link to post Share on other sites
cactusjackslade 146 Posted January 13, 2014 Report Share Posted January 13, 2014 Screw the tensioner bolt in to take slack off the belt and spin by hand your pulleys to see what doesn't sound right, to me it's not just a bearing noise, sounds like something catching when rotating. Club ChairmanI agree with Pete, bearing noises tend to be a constant wine or drone not a tapping. As Pete said sounds like something catching or something mechanical ticking, like hydraulic cam followers... i know this is crude but have you checked engine oil level?? Link to post Share on other sites
Cooz93 66 Posted January 13, 2014 Author Report Share Posted January 13, 2014 Little update, took it into work today and the boss said he has exactly the same problem on an old Audi he has. He said it was a pulley not being lubricated properly, and told me to squirt a little DW 40 in behind the pulleys. And so far it's gone. It got a lot better when warmed up but not seems to have gone completely. Will keep an eye on it though. Cheers for your help guys!! cactusjackslade 1 Link to post Share on other sites
Lukey. 381 Posted January 14, 2014 Report Share Posted January 14, 2014 Now you need to work out which pulley it was, my money is on the tensioner. MattVW 1 Link to post Share on other sites
Lumpzta 1 Posted January 24, 2014 Report Share Posted January 24, 2014 I have exactly the same problem on my 94 obd1, sounds like it coming from piston one area. after 30secs the engine is really quiet? my oil light started to flash as I was turning the key with coil unplugged to see if I could build up oil pressure to prime the lifters. ive also noticed my oil temp doesnt get past 80 so im guessing my oil is possibly too thick on cold startup hence the knock? im not sure what oil is in it but I know its at its required level and been recently replaced by the previous owner. should I try 5/30 or 10/40 im in the south of the uk and wondered what would be best for all year round. sorry for hijack. Link to post Share on other sites
djselliott 0 Posted January 24, 2014 Report Share Posted January 24, 2014 I also have a similar noise, from similar area. Can't watch the Vid at the mo but will do later to compare. Mine is like a ticking/whining sound on start up usually, under load its stops and then on overrun it whines again. I'm going to try an oil change first, but at the same time want to take the sump off to check for a plastic tensioner chunks, got the gasket (weird metallic looking flat one, not cork or rubber with compression limiters?!?!) just gotta find a convenient time to do it! Link to post Share on other sites
Cooz93 66 Posted January 24, 2014 Author Report Share Posted January 24, 2014 Sounds exactly like my problem. And mine also goes away when warmed up. Maybe I also need an oil change so might have to do that soon! Link to post Share on other sites
VR6Pete 1,455 Posted January 24, 2014 Report Share Posted January 24, 2014 Little update, took it into work today and the boss said he has exactly the same problem on an old Audi he has. He said it was a pulley not being lubricated properly, and told me to squirt a little DW 40 in behind the pulleys. And so far it's gone. It got a lot better when warmed up but not seems to have gone completely. Will keep an eye on it though. Cheers for your help guys!! Sounds like the bearing on the pulley has dried up - this is dangerous as the bearing could cease and cause damage to the pulley / belt. Keep an eye on this, but once you have identified which one is at fault, get it replaced Link to post Share on other sites
Cooz93 66 Posted January 24, 2014 Author Report Share Posted January 24, 2014 Thanks for that! The car is going off the road in a few days so can have a proper look then and get whatever it is sorted. Will update when I get round to it:) VR6Pete 1 Link to post Share on other sites
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