c200 1985 won't idle when hot

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Lezo - 27 Dec 2004 16:45 GMT

Got an old automatic carberator estate model.
It has started to idle badly, can stall when going slow, but only when
hot.
Have had the car serviced, but still no joy.
As it is an automatic it jumps about like a kangaroo when trying to go
slow, OK when driving above 10MPH.
Has anybody any ideas.
Thanks
Les

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T.G. Lambach - 28 Dec 2004 00:56 GMT

A vacuum leak would cause such symptoms. Listen for a hissing sound,
check for vacuum leaks all hoses connected to the intake manifold.

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Martin Joseph - 28 Dec 2004 01:40 GMT

> Got an old automatic carberator estate model.
> It has started to idle badly, can stall when going slow, but only when
[quoted text clipped - 3 lines]
> slow, OK when driving above 10MPH.
> Has anybody any ideas.

Hmmm, bad gas? Accelerator pump (if the carb has one)?

Vacuum leak like TG says is very likely also, or dirty air filter is
another likely cause.

Marty

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Lez - 29 Dec 2004 19:35 GMT

Checked the vacuum hose from airfilter to carb, took it off & revs went up.
Checked air filter & found where the hose fed from (rocker cover) was thick
with muck.
I cleaned it all up & it runs a lot better. If it still runs a bit rough at
least I know where to look.

Thanks for your help
Lez

>> Got an old automatic carberator estate model.
>> It has started to idle badly, can stall when going slow, but only when
[quoted text clipped - 9 lines]
>
> Marty

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