1988 90Q dipstick, hunt & peck idle.

[David Ullrich]

On 10/1/06, Huw Powell <audi at humanspeakers.com> wrote:
>
>
> >>>I also remember that the I-5 motors ran fine without a seated
> >>>dipstick, or even without a oil filler secured.
> >>>So I doubt that's your problem anyway.
> >>>
> >>
> >>From what I understand thats not true, at least on the CIS I-5 motors.
> >>Since the crank and valve cover vent enter the intake after the
> >>metering plate both are potential vaccum leaks. On any CIS I-5 that
> >>hasn't been tampered with removing the oil filler cap *WILL* stall the
> >>engine. If removing the oil filler cap doesnt stall your engine then
> >>you car has been tuned to idle with vaccum leaks present.
>
> This true of some of the CIS turbo systems (don't ask me which ones),
> but not of any of the n/a ones.  They'll run fine with the stick out,
> cap off, etc., apart from maybe splattering oil around a bit.
>
> --
> Huw Powell
>
> 89 90Q
> 82 Coupe
> 78 K20
> lots of 73 F250 parts
> 57 Trojan Loadster
>
> http://www.humanspeakers.com/audi
>
> http://www.humanthoughts.org/
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Would you then say that my NG has something wrong? If I recall correctly,
its the exact same engine as in the 88 90q.  Its a 2.3ltr  NA "high
compression" 10v I5 that uses CIS-e III with a single knock sensor. It dies
almost instantly if I remove the oil cap and idles terribly if I pull the
dip stick. Now my old 81 5+5 with  the same engine as the early Coupes with
totally mechanical CIS...it ran fine with the oil filler cap missing.

Dave
1987 CGT 2.3
SE VA