[W126 Coupe] Opinion on ignition parts & dust cover
Richard Hogarth
R_Hogarth at Foundrycove.com
Thu Sep 15 14:46:40 EDT 2005
Tom,
Give us a little more,
Runs rough at startup, after stop and go,after being on the hwy, etc etc.
Does it run rough when the AC compressor cliks on? when it's hot or cold or
whatever. On that age of engine, inconsistent small vacume leaks that come
and go with temperature and vibration changes are your biggest culprit. If
you are using some oil, a little more of less build up on the oxygen sensor,
or if the o2 sensor is not healthy may be the cause.
The ignition temp sensor in the intake manifold is also an item that can
cause rough running and idling.
-Richard Hogarth
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Tom Oelsner
Sent: Thursday, September 15, 2005 1:16 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Opinion on ignition parts & dust cover
I never tried it but will next time it acts up Tom
-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com]On Behalf Of Shayegan, Richard
Sent: Thursday, September 15, 2005 11:12 AM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Opinion on ignition parts & dust cover
I'm using W9DC's in my 380 and the only mechanical issue I still have I is
exactly the one you describe: sometimes it's perfectly smooth, but also
every now and then it idles a bit rough. No rougher than a non-German
engineered engine, but not as smooth as it is when it's running right. I
don't have any fouling, and I'm using the proper plugs, so if we do have the
same issue I don't think your plugs are at fault. Does yours also smooth out
if you goose it in neutral a few times?
Richard
________________________________________
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Tom Oelsner
Sent: Thursday, September 15, 2005 1:58 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] Opinion on ignition parts & dust cover
I'm using Bosch, Platinum 2, R3. Sometimes the engine idles so smoothly
that I am not sure it is running. Other times it idles a bit rough. This
is in spite of the fact that I have major oil fowling on at least 1 plug
(just checked one to confirm plug type. I know I need the valve seals
done.). Oh yeah, for what it is worth, the car was not originally a CA
car. It was from Texas.
Tom
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