I am trying to figure out where this new sound is coming from when I accelerate. It seems to be coming from the passenger side of the engine and almost sounds like rattling metal but I can only hear it when hitting the fuel pedal.

I was thinking something came loose in the trap oxidize or an exhuast leak. I was going to put a boost gauge on it and check my boost presure. It seems to happen everytime when accelerating at any speed throughout all rpms.

What should I check? How do you test for an exhuast leak? Is it right Mercedes still has to maintain my trap and if it takes out the turbo they have to replace that too?

__________________
85 300D Turbo

maybe motor mounts and/or the air can bracket? just a thought.

__________________
1982 240 D, 308,000 - 321,127 miles (sold)
1982 300 TD,166,500 - 226,000 miles
1998 E 320, 120,000 - 144,000 miles
2005 C 230 K, 26,000 - 77,000 miles (sold)

I had a similar experience with a similar noise. Seemed to only occur when accelerating or when the engine load changed due to an incline. I thought it might be an exhaust component, turbo, wastegate, etc. It gradually become worse over the course of 3 days and then finally came undone. I had to take it in. The clattering and banging noise was outrageous - I thought a rod had let loose. As it turned out the mechanic that re-installed the engine after a rebuild, did not get all the torque converter bolts tightened to the proper torque. The flex plate broke and all **ll broke loose. They fixed it and now it's back to its former glory.

If you haven't had your tranny or engine out recently then this may not be your problem but, its something to watch for. For you, I hope its most likely to be some exhaust component banging around due to a broken mount or loose attach bolts.

Keep us posted.

Check the airfilter mounts.

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42