Have seen where the vaporizers back low pressure side will actually leak air when warmed up. This. Looses ability to maintain vacuum to operate. Also. If it has the electric slow path solenoid on it, they short hot when hot. Also. Below the mixer, carb. Some were assembled wrong an the heat riser gasket was positioned wrong. The heat riser gasket is first. Then spill plate. Then gasket and etc. should be 3 gaskets. If they are brittle. Change them all out in proper order.
If possible see if it will fire on starting fluid don't use a lot just spray a little in the air cleaner and see if it starts that would tell you that something shutting down the fuel when hot. I am thinking this truck is on lpg ? if so it uses an assian propane system on the bottom of the regulator is a black valve that is the fuel lock when cranking do you here that clicking also on the top there's another valve it called the slow idea valve it is silver both valves must open to allow lpg to the carb. Also this assian converter would gum up and have trouble starting when cold but your problem is when hot.. If every thing checks out when it does not start try shutting the gas tank off and see if it tries to fire also can you here lpg coming out the air cleaner when it won't start truck might be flooding from the Asian converter. Get back to me and let Mr know.
If possible see if it will fire on starting fluid don't use a lot just spray a little in the air cleaner and see if it starts that would tell you that something shutting down the fuel when hot. I am thinking this truck is on lpg ? if so it uses an assian propane system on the bottom of the regulator is a black valve that is the fuel lock when cranking do you here that clicking also on the top there's another valve it called the slow idea valve it is silver both valves must open to allow lpg to the carb. Also this assian converter would gum up and have trouble starting when cold but your problem is when hot.. If every thing checks out when it does not start try shutting the gas tank off and see if it tries to fire also can you here lpg coming out the air cleaner when it won't start truck might be flooding from the Asian converter. Get back to me and let Mr know.
It cranks and has plenty of spark, but won't start. Then after waiting 15 or so minutes when the motor has cooled down it will fire up again
After it gets hot does it crank and not start or is it dead.? If it cranks and won't start check to see if it is loosing spark or fuel. get back to me with some more information.
Not sure if your model is correct? Lift turns on , then won't power up?