[W126 Coupe] idles rough when properly lean

[Shayegan, Richard]

Now that I think about it I would also need to buy another torque wrench, and I can't afford to blow money buying the same tools twice. I'll try the carb cleaner when I get back to school and see what that finds. Also, with pulling off the plug wires one at a time with the engine running, should I pull them off at the plug end or at the distributor end?
Richard

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From: mbcoupes-bounces at mbcoupes.com on behalf of Shayegan, Richard
Sent: Sat 3/5/2005 12:37 PM
To: Mercedes Coupes Mailing Lists
Subject: RE: [W126 Coupe] idles rough when properly lean


When you say spray the car cleaner "around the air guide hosing" do you mean around the outside of the part that houses the air flow sensor? Is spraying inside the air flow sensor bad juju?
Thanks,
Richard

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From: mbcoupes-bounces at mbcoupes.com on behalf of Dick Spellman
Sent: Sat 3/5/2005 10:45 AM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] idles rough when properly lean



Hello Richard:

Fast not too technical DIY stuff would be inspect the cap and rotor with 30k
miles the rotor should be worn a bit inspect cap for traces or cracks.
With a rag pull each spark plug ignition wire and listen for a further
stumble, if you find one cylinder where there is no change this is the
problem your mechanic needs to look at.
Spray can of carb cleaner with air filter housing removed is a fast way to
check for vac leaks, work the spray around the air guide housing and up
under the fuel distributor then along the new injector seals and hoses
looking for the idle to smooth out.

Dick

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