Hi Peter, That's strange, because a bad EGR valve or lifters should not cause serious idle problems. But, as long as teh indy has it 90% fixed, I wouldn't argue too much. ;) If the engine is carboned up, fuel additives will NOT clean it out - but they will clean the injection system. As someone else already mentioned, the carbon cleaning process involves lots of full throttle runs to the redline, preferably uphill. Don't worry, this doesn't hurt the engine. You should see lots of smoke out the tailpipe at first, but after a dozen or so WOT runs from approx 20mph to 80mph, you should get less and less smoke until it's barely visible. The more carbon there is, the longer it will take.
I'd wonder why he says it's carboned up though, that's hard to tell. If it's sluggish I'd adjust the ALDA (assuming it's virginal.) =) -dm > ------------------------------ > Date: Wed, 07 Sep 2005 19:11:40 -0400 > From: Peter Arnold <[EMAIL PROTECTED]> > Subject: [MBZ] Bad Idle Fixed now a paint question > > You may remember that I had a problem a few weeks ago with bad idle on > my 300SDL. We were suspecting a bad injection pump. > My normal Indy asked me to take to another fellow who was M/B trained > on older diesels. He said pump was good, lifters were bad ;-( > Frustrated, I bought new lifters (Thanx Rusty) and EGR valve which he > had also condemned. > Got the car back today, it is about 90% better. I am very happy. Indy > wants me to use some "Red Line" fuel treatment for a while, he insists > that I am carboned up. > > -- > > Peter T. Arnold > Windsor, Connecticut > U.S.A. > > 1987 Mercedes 300SDL, 225 Kmi on Delvac1, changes when f-soot is 2%
