metal engine sound

**4BLKRNGS** · 12-03-2008 05:39 PM

ok i just spent the past 2 days searching all over for the answer to this and i cant find it anywhere well here is the problem:

when i start the car or the engine speed is below about 2200 in either nutural or 1st gear. it doesnt happen all the time but it is a metal clanking sound coming from the engine block but i cant tell what it is. the car still boosts the same and i took off the front mount and looked at the intercooler hoses and they had no metal debris in them at all.i have no idea where to look next i took out the spark plugs too and there were not any metal on them either and the oil looked fine i had it changed 2000 miles ago.

The subject is a 1998 Audi 2WD 1.8T AEB engine GIAC chipped with an n75 race valve and godspeed front mount intercooler. i ran the vag com already and have not gotten any engine codes at all so please dont tell me to go vag the car. any help would be greatly appreciated.

**f15046** · 12-03-2008 06:04 PM

Possibly the wastegate on your K03.

**4BLKRNGS** · 12-03-2008 06:06 PM

how would i check that. it doesnt make the sound all the tim usually its only after i drive it pretty hard.

**f15046** · 12-03-2008 06:43 PM

You would have to take the downpipe off the back of the turbo, so you can get to it, and then maybe see if you can wiggle it and see if its loos.

Maybe someone else that had a similar problem will chime in.

**4BLKRNGS** · 12-04-2008 07:01 AM

bump.

it stopped making the noise when i let it sit over night

**Mawhitey** · 12-04-2008 11:02 AM

Oil pressure problems? No rattle in the AM due to the oil being colder and thicker maybe?

**jrock** · 12-04-2008 11:28 AM

Im having a brain freeze but i know what it is. Mine has the same deal and theres a lot odf threads posted on this. This first post pretty much sums it up tho. Lot of ppl never do ne thing about it and get by fine.

http://www.audizine.com/forum/showth...sound+oil+idle