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Air leak in fuel system?

I have an older car with fuel injection. If it gets parked with the front end higher than the rear for any length of time, you have to crank it for at least five minutes, even if you move it to a flat place or with the rear end higher, before it'll start. When you start cranking it doesn't fire at all, then fires intermittently a pop every few revs, then gradually more and more firings until it can run on its own. (of course I don't crank for five minutes continuously or the starter would overheat.)

I'm guessing there's a slight air leak in the fuel system? Or is it something else?

Reply to
Ernie Sty
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I doubt if there is an air leak in the fuel system because fuel would leak out of the opening when the system is pressurized.

Hook up a fuel pressure gauge with the car parked on level ground, then raise the front end and see if the fuel pressure drops over time. If it does, check the fuel pressure regulator.

Reply to
Ray O

first check that the pump runs at turn on, then check how much pressure there is, then check that it is rich enough to start, a whiff of carb cleaner in the air intake will show if it is not rich enough.

It sounds like there is a lack of richness and that warming the engine (and getting lots of neat fuel in the cylinders) by lots of cranking brings it up to a state where it can stumble into life.

Mrcheerful

Reply to
mrcheerful

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