my wife has a 2001 gti 12v vr6. i have the start up sound then it goes away but after it warms up this tapping sound comes around could it be something wwith the timing chains as i dont sound like a bad lifter? is it possiable to change just the tensioner bolt? thanks
are you sure it s not a lifter ticking ? or is it a knocking sound ? or a tapping one ? its hard to diagnose like that ...it could be alot of things //// lifter , oil pump, tensioner bolt , shifter rod .....et c... you know before changing parts randomly , you ll better try to have someone to listen at your car ... i am not saying go to the dealer ...i hate dealers ..but someone who know well the mechanic ...
better thing to do is to record the sound that you can hear and post it on vwvortex ...a lot of people will help you like that ,,,
FYI you can change your tensioner bolt without removing the intake ...you just have to remove the airbox then the air boot connected to your TB ..then you ll have access to this bolt ....pretty easy ... i did it on my car .... http://forums.vwvortex.com/zerothread?id=1264409
it could be the bar with holes thingy... damn cant remember the name but you say it goes away after startup? found it manifold shifter rod
btw the link below will give you an idea of how the timing chain problem is suppose to sound like
Modified by ricardo at 6:04 PM 11-6-2009
Modified by ricardo at 6:06 PM 11-6-2009
"PUBLIC TRANSPORTATION... because youre poor" Oh yaeh i type like thsi cause Im at work 95 Mulberry GTi Latest Mods: Heater Core Bypass,wheel bearings,restraining system "No retreat, No surrender" http://forums.vwvortex.com/zerothread?id=1138563
i changed my shifter rod recently but it might be a lifter as when i listen to it by placing my ear by the vw sign on the engine cover it is really loud i have new lifters ready to install i am trying to figure out how to do it? im assumming that if it is a oil pump would there be a way to diagnose that somehow?
I had a similar noise and it was the serpentine belt tensioner. The belt stretched with age and the tensioner was rapping against the stop. Replace belt and problem was gone.