Truck wont crank unless plugged up - Ford Powerstroke Diesel Forum

 
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post #1 of 10 Old 01-20-2012, 01:53 PM Thread Starter
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Truck wont crank unless plugged up

I have a 2002 7.3 with 220K on it. Its had regular oil changes with amsoil.
Over the past few years its gotten harder and harder to crank in the winter time. This year being the worse due to having to have it plugged up even at 60F outside.
If I plug the truck up for 30 minutes it'll crank, but is only running on maybe 5 cylinders until operating temperature is reached. during this process there is no smoke. If I try to drive the truck while it is cold there is zero throttle response. I can put it in neutral and floor it and it'll get to maybe 1200 Rpm and the truck will shutter.
I have pulled the valve covers and checked each glow plug and got 1.1 to 1.2 ohms on all of them. The control wires had continuity on each bank. The glow plug relay is good and closing for two minutes before dropping out of the circuit. I dont believe its a plug problem, because of the lack of smoke.
The ICP plug has oil in it. I unplugged it thinking it wasnt telling the computer to raise injector pressure and tried to crank the truck using the default pressure and it still will not crank.

I keep running myself in circles and was hoping someone could shed a little light on my problems.
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post #2 of 10 Old 01-20-2012, 03:05 PM
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i hope some one has an answer because my company 02 7.3 is worthless untill it warms up it wont pull itself across the driveway but it is supper after it warms up

02 7.3 291,000 stock

90 f450 7.3 odemeter says 700,000 plus starts and runs good little week stock
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post #3 of 10 Old 01-20-2012, 04:49 PM
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As for the hard cranking how are the batteries. It could also be the starter going bad. If you have it plugged in does it run smooth right away or does it have the same symptoms.

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post #4 of 10 Old 01-20-2012, 05:00 PM
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My 7.3 stroker has a bad glow plug relay that's fully Burt out and it starts like its warm when it's 35f out, smokes a lil; but It will fire and run on all 8. if it's under 30 I just jump the relay, And she fires up on a few cylinders cuz I have 4 bad glow plugs. Also when it's 35+ I just start it as soon as I get in..

I think ya have a bad injectors if it won't start when it's 60!


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post #5 of 10 Old 01-20-2012, 05:02 PM
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Try some 5W40 oil and some RevX.
You say regular oil changes, but what's regular?



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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post #6 of 10 Old 01-20-2012, 07:06 PM Thread Starter
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Quote:
Originally Posted by jesilvas View Post
Try some 5W40 oil and some RevX.
You say regular oil changes, but what's regular?
regular is 10K on amsoils claimed 25k oil system
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post #7 of 10 Old 01-20-2012, 07:10 PM
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That might be a factor. Maybe.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #8 of 10 Old 01-21-2012, 09:10 AM
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Replace your injectors and your problems will be solved. DOnt waste your time doing o-rings. that wont help. Good luck
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post #9 of 10 Old 01-21-2012, 11:07 AM Thread Starter
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Quote:
Originally Posted by lfleming77 View Post
Replace your injectors and your problems will be solved. DOnt waste your time doing o-rings. that wont help. Good luck
Yeah I've come down to that decision. My gut has told me all along that its the injectors, I just needed a few to agree. I'm ordering a set from Pensacola Diesel Tonight. Picked up a new CPS and an new ICp today at Ford. Figuered oil was in the connecter on the ICP that it had to be bad also.
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post #10 of 10 Old 01-21-2012, 11:13 AM
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ya man injectors.

2003 F350 7.3L Lariat FX4
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