On Sat, 30 Dec 2017 13:26:38 -0600 fmiser via Mercedes <mercedes@okiebenz.com> wrote:
> > archer75--- wrote: > > > My '83 300D (same drivetrain as yours), which also doesn't get > > driven much, does the same thing. It sort of "hammers" and > > shakes the engine at idle in any kind of weather. > > > I vaguely recall that carbon buildup isq supposed to be the > > cause and the cure is to lug the engine up a long grade with the > > engine temp topping out. > > Not lug! Lugging is high load, low RPM. That is not good for any > engine. What you want to clean out the engine is high cylinder > temperatures. So high load, high rpm, full fuel. There are a > couple hills around here that are big enough and long enough and I > try to "treat" the engine every time I climb them. The turbos > need a bigger hill to do it well. > > Just high RPM isn't enough, so running the engine against the > governor in a low gear isn't effective. It is the heat caused by > max power and high RPM that clears junk out. > > _______________________________________ Well, guess I'll have to wait until a trip to Georgia or beyond since we don't have any hills to speak of here in Florida. The only way I can think of to do what you suggest would be to pull a heavy loaded trailer at high speed on Floridas flat roads. Gerry --- This email has been checked for viruses by AVG. http://www.avg.com _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
