[V8] Strange no-start fuel issue

Korn, Bob Bob.Korn at Fike.com
Mon Apr 28 05:36:46 PDT 2008

My faulty check valve only caused long crank times to get the car
started. Usually a first try of a few seconds, if the car didn't fire I
would stop and then restart, after a few more seconds it would always
fire.  This was after sitting for extended periods or overnight.   Tom's
saying his starts up first thing after an overnight, would rule out
check valve in my opinion.  Sounds more like a crank or timing sensor


-----Original Message-----
From: v8-bounces at audifans.com [mailto:v8-bounces at audifans.com] On Behalf
Of Scott Simmons
Sent: Monday, April 28, 2008 1:40 AM
To: toml99 at todomundo.com
Cc: v8audi
Subject: Re: [V8] Strange no-start fuel issue

This could be a faulty check-valve at the fuel pump?  Letting fuel
pressure drop while sitting.

~Scott S.

toml99 at todomundo.com wrote:

>Hi all, and congratulations to Roger on the new car.  As far as the
>3.6-4.2 debate goes, with my convenient local station today listing 
>premium for $4.16 and diesel for a pleasant $4.64(I have a diesel 
>truck)...I can't rationalize even wanting a 4.2(but would still like
>to testdrive one and feel the difference)     .....worse even is my  
>1990 130 2 stroke outboard that burns about 8 gal/hr(somewhere between 
>3-4mpg at running speed).  And for what it's worth, I just hit 110K, 
>and my cargo nets are perfect....I also want to thank everyone else for

>the enjoyable reading regarding the purchase of the vehicle...
>So here's the problem.  Car starts right up,runs/idles/drives great.   
>I can even drive it 1/2 hour down the road, turn it off, starts right 
>up.  If it sits for awhile(1/2 hour, up to today when it was 5 hours in

>the ski area parking lot and was about 40 degrees out), cranks but no 
>start.  Quick spray of starting fluid, and sparks right up. If I left 
>it overnight in the driveway, will start first crank in the
>morning.   First time this happened, I tried the cold water on the  
>sensors trick, and nothing.  So, in today's case, the motor was not 
>even warm when I got back to it, so it's not necessarily a
>temperature thing, but is starting to seem like a time thing.   I  
>also stopped twice on the way down for 5 minutes or so and started 
>fine.  I'm guessing, something electrical is telling the injectors not 
>to open, and that the starting fluid sparks it up and the fuel flows/or

>some vacuum thing opens up when motor starts, and all is
>fine....If it wouldn't start at all, I'd check all the fuel delivery   
>stuff, but it's running great(after it starts).  [In the 87 Saab that I

>just rebuilt and had gone thru all the tests for "no start"(had fuel 
>pressure/injectors worked/spark etc, decided to swap out the ECU
>and sparked right up].   I "blinked" out no fault codes the last time  
>it wouldn't start.  Any Ideas?...Sincerely Tom La Plante
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