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help please
- skipper928
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You can remove the ball cup from the end of the passenger fuel rail. Be careful not to lose the ball. Fit a water bottle, or something similar, over the end of the rail and roll the starter over for a few seconds. If there was fuel in the tank and the pump were running, then you will have fuel in the cup unless a fuel line were collapsed or blocked (not at all likely).
Is the fuel gauge working or is it stuck at one level?
Try this and report back when you have confirmed whether or not the pump is good or not.
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I thought that all the 928's fuel pump ran for 3 seconds with the key first turned to the on position, but after that, the starter being engaged or the engine running was necessary for continued fuel pump operation. Am I mistaken?
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stepson;14585 wrote: Austin,
I thought that all the 928's fuel pump ran for 3 seconds with the key first turned to the on position, but after that, the starter being engaged or the engine running was necessary for continued fuel pump operation. Am I mistaken?
Ducman82;14586 wrote: ^^^^ that is correct. the pump should make a "priming" noise when the key is turned to the IGN hot, before cranking. thens stops. starts back up when the starter engages.
Not so on L-jet, LH 2.2, or LH 2.3..
If you want to see for yourself, open up the passenger fuel rail. Place something there to catch fuel and turn the key to ON. Look and see how much fuel is collected.
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The later cars with the standard "53" relay run the pump only when commanded by the ECU, based upon ignition signals.
This often means that the earlier cars may fire just a little bit sooner, as the later cars may need a few engine turns to build fuel pressure, while the early cars start building fuel pressure even before the engine turns.
Wally Plumley
928 Specialists
www.928gt.com
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