Re: 1985 Audi 4000s idling rich

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Re: 1985 Audi 4000s idling rich

TonyJ	09 Jun 2008 02:45
> How do you know it is running rich? > Is it also idling either too low or too high? [quoted text clipped - 7 lines] > You can spray some carb cleaner at them to see if the idle changes any. > It might also be an idea to run a bottle of Techron injector cleaner in a few tanks.

dave AKA vwdoc1

08 Jun 2008 18:41

How do you know it is running rich?
Is it also idling either too low or too high?

Check your coolant temperature sensor for the fuel injection.
Check for a weak ign coil.
Check the fuel pressure and the current to the fuel pressure regulator.
Check the fuel distributor flap level according to the Bentley. Oh and
clean that area too! ;-)
I have seen bad/leaking fuel injector seals cause some idling problems too!
You can spray some carb cleaner at them to see if the idle changes any.

Signature

later,
dave
(One out of many daves)

> My Audi 1985 Audi 4000 is running perfectly well when warmed up after
> about one minute.
[quoted text clipped - 4 lines]
> I replaced a leaking valve cover gasket, airfilter and sparkplugs,
> checked the idle valve, but have not been able to pinpoint the cause.

vgf	08 Jun 2008 04:01
My Audi 1985 Audi 4000 is running perfectly well when warmed up after about one minute. The problem is rough idle and running rich when starting the cold engine. I replaced a leaking valve cover gasket, airfilter and sparkplugs, checked the idle valve, but have not been able to pinpoint the cause. Any hints would be appreciated marti-

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