kevinvu34

I have an 1999.5 audi a4 1.8t...I just started having problems with my engine, it has only 125,000 on...timing belt was replaced around 90,000miles. When I start the car, there's a ticking noise that comes from the top of the engine. at idle or when warmed it still has the ticking noise. When I accelerate the ticking gets louder as the rpm goes up. Please help.

4corners

How's your oil??

kevinvu34

500miles in, 5w 40 synthetic...

bbboy

Take the engine cover off, and listen to the area above spark-plugs. In my case, I was able to hear slapping sound coming from all the cylinders in sequence, indicating lifter noise.

If the noise comes from one place - cam chain tensioner, I assume it would be more localized to one spot, not sure here.

Quaboosttro

I can almost guarantee it's your cam chain tensioner. There is a new revision available to replace your faulty unit...prob is it is about $700+ and 4 hours of labor to replace.

Pete@ECSTuning

While I agree with Quaboosttro's assesment of your problem. I disagree with the price. A 1999.5 Cam chain tensioner is only 194.95.

The K revision is for the AUG and AWM motors.

Cam Chain tensioner

Reggie

Could be the hydraulic lifters - Try a can of oil detergent for a couple of hundred miles to see if it clears it up.

Foxtrot14

BUMP...same problem here

mrwebbin

if it sounds like a diesel cam chain tensioner for sure.

Pete@ECSTuning

I agree, sounds like a cam chain tensioner issue, I linked to one just a few posts up.

Here is a good AWM DIY: http://www.passatworld.com/forums/sh...d.php?t=215732