hard or no cold start - Ford Powerstroke Diesel Forum
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Old 01-27-2008, 02:33 PM
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Cool hard or no cold start

Hi guys I'm new to forum community but I need some help. I have a 99 F250 PSD. It has 125,000 Mi. I have serviced this truck with care. It has always started without plugging in. This winter when temps are under 60 degrees F it will not start. I checked the GPR. 10.50v 0n glow side in heat mode. I OHM'ed glow plugs and they are 0.5 - 7. The relay cycle time is 45-60Sec. Sometimes the engine will crank and you can let it warm up, shut it off and try to restart immidiatly and it will not start. Can this be a fuel pressure problem or High pressure oil problem at cold temps. The engine runs great when it is running no complaints. Any help? Thanks:

Last edited by BOOMDOG; 01-27-2008 at 02:57 PM. Reason: wrong choice of words
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Old 01-27-2008, 02:46 PM
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when you say engine doesnt crank do you mean it doesnt turn when you hit the key?
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Old 01-27-2008, 02:50 PM
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changed your fuel filter lately?
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Old 01-27-2008, 02:52 PM
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I'm sorry wrong statement. I't won't start. Also when it dosen't start it has no white fuel smoke like the glow plugs are not working. When it starts it runs like theres nothing wrong.
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Old 01-27-2008, 02:55 PM
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Oh yea! I just changed Oil and fuel filters.
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Old 01-27-2008, 03:00 PM
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When the glow plugs are on there should be no more than 1/2 volt measured between the two big terminals.

Any computer codes?
Can you get access to a scanner where you can read ICP when cranking hot and no start?
Have you tried swapping out the CPS with your spare?
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Old 01-27-2008, 03:44 PM
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Thanks for the reply. I havent haqd access to a scanner yet, but thats my next move. I have a spare CPS, but didnt thik I needed it because it never stalls and runs great when it is running. This afternoon just before I ansewered this thread i started the truck and let it warm up and started it several times with no problems. Does anyone think that it could be a EOT problem?
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Old 01-27-2008, 04:43 PM
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Haven’t experienced it yet but I seem to remember some discussion on bad IPR O-rings causing no start when hot condition.
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Old 01-28-2008, 06:28 AM
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Check your batteries if they drop below 11 volts while cranking you found your problem. Next time it won't start pull the FF lid and verify you have fuel, then open the drain line and make sure it comes out at a good solid stream. If no fuel or weak stream you have a FP problem.
NCH
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