D2 - Tappet noise/pinging?

ozscott

Well-known member
Hi all. 02 D2 4.0 with 90,000 miles on her. Started suddenly making a racket when accelerating. It sounds like a very noise tappet, but it could well be pinging its arse off. Given that it comes and goes I reckon its pinging. It had a new MAF a little while back and has been running well. Apart from the ticking it runs hard on both LPG and petrol. I wonder if a knock sensor is playing up (or my new MAF has gone south!).

Any assistance greatly appreciated.

Cheers
 
B

barefoot

Guest
check the gaskets where the manifold meets the y-pipe by either: looking for soot trails, feeling for air or running seafoam through the plenum and looking for smoke to come out there. or just tighten the bolts and see if it goes away ;)

this exhaust leak is infamous for sounding like a lifter....especially under load!

enjoy!
 

ozscott

Well-known member
Thanks gentleman. I just stuck my head under the bonnet (thats a hood for you blokes) and reved the motor up - under constant 3000 or so rpm there is no tapping - rev it and its there, but unlike in the truck where it sounds like a tappet, this is a rough sound and you can hear small back off noises - like one of the 4 headers is missing and she's going straight to atmosphere....which makes me thing that you fellas are right on the money.

I will take to it with a large funny socket and see what happens.

Thanks again. Will report back.

Cheers