My track car has recently started playing up, when i turn to the ignition on the key i used to be able to hear the fuel pump priming for a few seconds then turning off. Now it only runs for half a second or so regardless of how many times i turn the key off then back to ignition.
The car will start after the minimal priming then die on idle, at which point i can then head the pump prime for a bit longer, if i turn the key to off then back to ignition the pump will usually then prime for several seconds then start and idle fine.

Is it likely to be an issue with the pump or the relay or something completely different?

Cheers.

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Goldie the track car.

If i was you, take up the cap on top of the pump and have a proper listen whilst someone primes it. My pump gave up shortly after fitting my new engine and i noticed it getting quieter and quieter until it then became a lumpy noise rather than smooth. Don't know how it would of completely died as i replaced it for a Walbro before it was mapped again.

Thanks for the info guys, i'll have a proper look at it this weekend. I think i have a spare relay in my parts box that i will give a try first off.

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Goldie the track car.