Quote:
Originally Posted by TonyS9
Its normal for 1997 to prime just once. It needs to be off for >10s before it will prime again. No idea why they did that its very annoying when diagnosing or opening the fuel system.
To check sparks, check that the rev counter is moving a little during cranking.
Priming once tends to mean fuel+relay is good.
If no rev counter flicker, then either crank sensor or ignition amp maybe.
Spark checkers (£16 in halfords) are handy to have.
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If you have primed it once, turn off then on again quickly without starting, fuel pressure will still be up and ecu wont have had signal to say engine has actually ran.
My 740 did something similar, was the fuel pump relay.
Mines now bypassed with a standard 4 pin relay and car is so much better in every way, starts 1st compression cold or hot and doesnt randomnly take a break every so often!