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Discussion Starter #1
please help

I have a 1991 Nissan patrol 4.2 dual fuel
when the engine gets hot . and I stop the car, I cannot start the car , I have to wait about 15 min till the engine cools down, then it will start again

please help me
 

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Starter solenoid and/or the starter itself.

What have you done to resolve the problem thus far?

And is this vehicle a 370Z? methinks not...
 

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Discussion Starter #3
the engine turns over but will not fire up
spark plugs, coil and electronic ignition have been changed by mechanic
 

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I am assuming this is a carbureted vehicle and if so, I would like you to try something for me please. Find where the metal fuel line comes off of the fuel pump and put a wooded clothes pin on it and test it. I have heard that doing this pulls just enough heat out of the fuel line to stop the vapor lock, which I beleive is what you are experiencing. Why is it doing it now? The pump could be slightly worn and the needle and seat in the carb could be not sealing properly. When you shut her off the metal fuel lines heat up, the gas expands and either pushes past the needle and seat in the carb or back through the fuel pump and floods the motor and/or creates a void in the line from the pump to carb. I have never had an opportunity to try this... I am very curious to see if it works.
 

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Discussion Starter #5
tried the peg and still the same

also the same problem when I run it on lpg gas

I forgot to say it also misfires on idle when hot, on both petrol and lpg gas

I am very sad to say the mechanic is at a lost end and cannot repair
 
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