1990 f150 5.0 wont start

Most likely the fuel pump is ok, but there is likely air in the fuel line that you need to bleed off under the hood.

It is possible that the fuel pump went bad, and the way to know is to check the fuel pressure (same place you bleed it under the hood). The fuel pump is in the tank, so it's a real pain to change.

I have a 1997 buick lesabre, and it wont start. I took it to a guy who said that it was the fuel pump. well he changed that but it back fired a couple of times and then it stopped and wont start again. It's just turning over now. well then I found out that the gas I put in it may have had water in it, when the guy went under the hood and pushed out some "gas" it was water it had no smell. so we put some rubbing acohol in it to burn out the water. now it still wont start. I need help, dont know what to do at this point. PLEASE HELP SOMEONE!!!!

on most cars if the temp sending unit goes bad the gauge reads as if the car is running hot. check sending unit before you waste more money.

Give me some more information about this problem. May be i can help.

SMOKE UNDER HOOD COULD BE COOLANT LEAK FROM RADIATOR ITSELF OR CHECK FOR LEAKING TOP RADIATOR HOSE AND CHECK FOR LEAKING BOTTOM RADIATOR HOSE.LOOK UNDER THE HOOD IF COOLANT BOILING OUT COOLANT OVERFLOW JUG ENGINE OVERHEATING FROM BAD THERMOSTAT OR BAD WATER PUMP.CHECK FOR COOLANT LEAK AT WATER PUMP WEEP HOLE.IF SO WATER PUMP NEED REPLACING.ADD MORE COOLANT UNTIL LEVEL CORRECT.TRY LOCATE LEAK. IF CAR OVERHEATED AND BOILED IT OUT. SMOKE UNDER THE HOOD CAN ALSO BE CAUSED BY LEAKING VALVE COVERS WHICH CAN BE FIRE HAZARD IF OIL LEAKS ON HOT EXHAUST MANIFOLD.

Look @ Autozone.com under repair then input your vehicle info ,they have lots of info free!!
Hope this helps!
Dan

the waterpump may have went out, leaked out all the coolant, and depending on how badly you overheated your engine, you may have serious problems as to some engines dont handle extreme heat very well. you might want to get professional help

I think you mean you saw water vapor (some call it steam) not smoke.

You probably have a hose leaking (badly). If it's not a hose, your water pump shaft seal is probably kaput.

check to make sure the bottom radiator hose is not collapsing. sticking together. once it sucks together its like the thermostat being closed. the faster the engine turns the it sucks together. also make sure its not the clutch on the fan gone bad. if it has one. to ckeck ,look under hood at fan ,have someone to rev engine. make sure the fan turns as fast as the engine turns . if it doesn't it's a bad fan clutch. goe put a new one on.

The wheel could be stuck but you need to have the water drained out and a mixture of antifreeze to water added to it. Be sure to keep in mind the heater core also has fluid in it and you could damage that also.