[s-cars] Troubleshoot a no start issue
Ian Duff
iduff at comcast.net
Mon Jun 9 06:27:12 PDT 2008
In my vast <grin> experience, at the most basic level it comes down to
spark or fuel. Looks like you've verified fuel, have you verified
spark? Once you're sure you've got spark to all 5 plugs, then you get
to chase zebras and verify that you're getting spark at the right
time. Good luck.
-Ian Duff.
On 09 Jun, 2008, at 09:04, Brooke Fairbanks wrote:
> This is the synopsis of my no start struggles:
>
>
>
> * With a half tank of fuel and driving the 95 S6 w/ 129K
> miles, the
> engine hesitates/stumbles then dies. It refires, but runs poorly
> then dies.
>
> * With the car towed back home, I swap the crank speed
> sensors from
> my other S6 and still a no start condition.
>
> * Compression is high of 135 and a low of 125 across the
> cylinders.
>
> * I verified that the speed sensor pin is still on the
> flywheel.
>
> * I swap out the old POS units with known to be working POS
> units and
> still a no start condition.
>
> * I swap out the old coils with a 034 ignition loom with 5
> new 1.8t
> coils and still a no start condition.
>
> * I by-passed the fuel pump relay to check the fuel pump
> function and
> it appears to pump fine from the filter line (I did not measure the
> exact
> volume or measure from the fuel pressure regulator or the
> injectors) I
> checked to make certain it was fuel, not fuel/water coming from the
> tank.
>
> * I spliced in a CPS and still a no start condition.
>
> * I replace the fuel filter, spark plugs, crank seal, cam
> seal, TB,
> serp belt, serp tensioner bearing, H2O pump, T-stat, triple checked
> the
> timing marks
>
> * Replaced the fuel pressure regulator
>
> * Removed the fuel pump basket to clean the screen (very
> small amount
> of tiny debris)
>
> * Replaced the fuel pump
>
> * Checked the fuel to the fuel rail (gobs of pressure spray)
>
> * The motor fires very intermittently but still does not start
>
>
>
> Any other suggestions?
>
>
>
> Thanks!
>
>
>
> Brooke Fairbanks
>
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