Question about 2000 Ford F250 Super Duty Crew Cabs

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Hard to start if not plugged in for hours

I have a 99 F-250 7.3 powerstoke and if I do not plug it in for hours before I start it I have to crank and crank and crank before it will start. I have even let the glow plugs warm till the light on the dash goes out 3 or 4 times to make sure the plugs are heated up before trying to start it also. That still does nothing. Once it is started it will blow white smoke and then it will run find. Is there something I can do to fix this problem?

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Sounds like your glow plugs are bad. Have them checked.

Posted on Jan 10, 2009


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I have a 1994 f250 with a hypermax turbo upgrade and inter cooler i would like to know if there are any ways that i can get any more power out of the truck and also if you may have any ideas why the wait...

Your 94' F250 must have a 7.3 I'm sure. Is your engine a factory 7.3 powerstoke or a normally asperated diesel? The solenoid pack for the glow plugs has been a real common culprit for these Ford diesels. The following is most likely your problem.
1-bad ground or poor ground at the glow plug solenoid.
2-Defective solenoid for the glow plug circuit.
3-Defective glow plug in the circuit.

Ok to check these problems you can do the following.
Check the ground by taking a DVOM and checking the resistance between the engine or chassis ground and the mounting bolts that secure the solenoid to the engine.
Then check for a min of 11.8 volts to the solenoid input post. Then check the output voltage to I believe the brown ouput wire to the glow plugs. Check the connection furthest from the sloenoid typicly at cyl. 1 and cyl 5. This takes two pepole. Have someone else cycle the key while you check the voltage. If the voltage is good but still the solenoid is cycling off too quickly disconnect the brown output wire to the glow plugs and cycle the key again. If the problem goes away test each glow plug's resistance for a direct short to ground or the wire arness. If the problem persists I suggest replacing the solenoid.

Jan 26, 2009 | 1997 Ford F250 SuperCab

1 Answer


Yes it does. Let the glow plugs warm up for 7-10 seconds (the light on the panel should go off) and then crank the engine. If the weather is cold, half an hour of running does not warm up the engine completely so you need to use the plugs for the first few startups during a cold day.

Dec 17, 2008 | 1995 Mitsubishi Montero

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