[V8] 10 valve issues

[eric anderson]

So i should replace the fuel pump then?,,......and she will be rockin?

--- On Sat, 10/23/10, cobram at juno.com <cobram at juno.com> wrote:

From: cobram at juno.com <cobram at juno.com>
Subject: Re: [V8] 10 valve issues
To: v8 at audifans.com
Date: Saturday, October 23, 2010, 3:47 PM

Ditto the check valve, I had one that worked itself loose and had the
exact same symptoms.  Chased many a false trail before finding it.

 
Kent McLean <kentmclean at comcast.net> writes:
> eric anderson wrote:
> > My 88 10 valve 90 quattro ... if it's dead cold it will crank for 
> 10-15 maybe
> > 20 seconds before it finally coughs to a rough idle and suffocates 
> under any
> > throttle.....
> 
> My old 10V (Bad Puppy) had a slow starting problem when cold. The 
> list
> suggested a one-way check valve at/in the fuel pump, or possibly 
> leaking
> injectors.
> 
> A bad check valve lets the pressurized fuel drain back to the tank, 
> forcing
> a long crank while the pump pressurizes the line on a cold start (or 
> sitting
> long enough to drain back). The leaking injector(s) means it drains 
> from the
> other end, but the same result.
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