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Not starting first crank attempt 700 1991

uid 60851's pic
posted by  Grey245 on  Sun Oct 17 02:17 CST 2021
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That's worth checking, but I am leaning towards Chris Mullet's explanation a bit more.

A faulty check valve would make the pressure bleed back into the tank through only the pump, it has nowhere else to go. So, during the first attemp, if you just kept cranking the engine (meaning the fuel pump will also keep running) wether or not that check valve is not closing properly IMHO wouldn't matter. The engine should start on the first attempt, perhaps needing only a few turns more of the starter motor.

Having said that, if the fuel pump has come loose from its fuel pulsation damper, pressure would bleed straight back into the tank.Some more movement of the pump and it would start to gush and create a no-go situation as the fuel system is now starved.

Neither of these two situations seem to apply clearly.

Now would probably be a good time to buy or borrow a fuel pressure meter.






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