Cold start issues continue (84 4000 quattro)

[Tom Love]

or leaking injector?
----- Original Message ----- 
From: "Ed Kellock" <ekellock at gmail.com>
To: "'Johnny B'" <pre95 at live.com>; <quattro at audifans.com>
Sent: Wednesday, August 11, 2010 10:23 AM
Subject: RE: Cold start issues continue (84 4000 quattro)


> Have you checked the injector seals?
>
> Touching the gas and having the engine die sounds exactly like a too lean
> situation.  On my 85 urq I went around and around and found that all my
> injector seals were loose.  We removed each injector and just tightened 
> each
> seal and cured what amounted to a serious vacuum leak.  They're not all in
> hoses.
>
>
> Ed
>
>
>
> -----Original Message-----
> From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] 
> On
> Behalf Of Johnny B
> Sent: Wednesday, August 11, 2010 7:07 AM
> To: quattro at audifans.com
> Subject: Cold start issues continue (84 4000 quattro)
>
>
>
> Well thus far no luck. I have scoured the engine compartment for vac 
> leaks,
> fixed one which corrected my high idle, but still have my cold start 
> issue.
> The coolant temperature switch came in yesterday (that mounts between
> cylinders #1 and #2 on the bottom of the coolant neck leading in to the
> head), I installed it and this morning, still a bad cold start.
>
> Once the car is started, my idle is rock solid, does not wonder, and I 
> have
> good power up to ~5k which seems fine for a JT. No running condition 
> issues
> once started. I did notice this morning when it first started, I touched 
> the
> gas pedal to bring the R's up and it simply died. I restarted and let it
> idle for ~30 seconds and all apparent running conditions went away.
>
> Someone had mentioned the fuel pressure regulator could be at fault,
> specifically the "warm up regulator on the fuel head" which I am uncertain
> as to what he means. There are 2 "fuel regulator" pieces near the fuel
> distributor, the vacuum regulated piece mounted towards the front of the 
> car
> in front of the fuel distributor, and the FPR mounted directly to the fuel
> distributor that has 2 wires leading to it.
>
> Any insight greatly appreciated, I know I have said it but it's very
> annoying having a car that is otherwise well sorted and good running with 
> a
> bad cold start.
>
> Johnny
>
>
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