94 Hard start - Ford Powerstroke Diesel Forum

 
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post #1 of 4 Old 10-30-2012, 08:17 AM Thread Starter
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94 Hard start

I have a 94 powerstroke and it takes like three times to glow plug it and then still takes excessive cranking to start but when it is running it runs fine. I can shut it off and it will start right up again but if I leave it for a bit it takes a long time and hard to start again. I have no clue what could be wrong. I do not know alot about this my first truck like this. Would appriciate some help if you know. Thanks
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post #2 of 4 Old 10-30-2012, 08:44 AM
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Originally Posted by 94powerstroke12 View Post
I have a 94 powerstroke and it takes like three times to glow plug it and then still takes excessive cranking to start
So you're leaving the key on for the full two minutes (or so) that the glow plugs run, then turning it back and repeating THREE times?
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post #3 of 4 Old 10-30-2012, 10:03 AM Thread Starter
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Yeah I am, but during each time i crank the motor for a while inbetween and it each glow plug but it still won't fire so i will do it again. After the third time it starts.
I was wondering if the fuel could be running back or something but i am not really sure...
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post #4 of 4 Old 10-30-2012, 11:49 AM
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Measure the voltage drop across the Glow Plug Relay. Get a Digital Volt Ohm Meter (DVOM, a cheap one will work fine) and place the leads on the relay's large terminals when the relay is active (up to about 1.5 minutes after the key is turned to "Wait-to-Start"). A reading of 0.3V or more and the relay is bad. A better-than-stock replacement is the Stancor (now White-Rodgers) 586-902. If your 94 still has the old relay with the weatherpack connector setup, you can cut the connector off the harness and crimp on regular ring terminals (like the later-than-94's do). Cheers!

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