COLD STARTING

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Bill G. - 01 Oct 2006 16:37 GMT

Hello all

My 89' 560SEL when the engine is started (often) cranks for 7 seconds before
it starts up. It runs fine (except for some grey smoke).I noticed that when
I was driving the other car and my wife driving my MB. Every that she
accelerated their reared the ugly plume of smoke. When I drove it, it too
was smoking. I have to admit though, at a stop light whoever is behind me
gets a nice face full of smoke. :o))))))))))))))))))

Any help would be great.

Bill

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T.G. Lambach - 01 Oct 2006 17:44 GMT

Worn motor.

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Roland Franzius - 01 Oct 2006 18:02 GMT

Bill G. schrieb:

> Hello all
>
[quoted text clipped - 4 lines]
> was smoking. I have to admit though, at a stop light whoever is behind me
> gets a nice face full of smoke. :o))))))))))))))))))

Depends on color. Black smoke during acceleration means too rich on fuel
(or poor on air if the filter is closed), blue smoke is a sign of
burning oil. Blue clouds depending in acceleration are a sign of worn
intake valves. Black clouds in cold start phase point to cold start
enrichment unit.

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Roland Franzius

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David J - 02 Oct 2006 14:55 GMT

>Bill G. schrieb:
>> Hello all
[quoted text clipped - 11 lines]
>intake valves. Black clouds in cold start phase point to cold start
>enrichment unit.

Not valves. Worn valve guides. Not an expensive fix either.

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