No Start Condition - Ford Powerstroke Diesel Forum
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Old 12-30-2010, 06:05 PM
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No Start Condition

I really need your help! I have a 1995 Ford F250 7.3 that I really need need help with. I just became a member of Powerstroke.org and haven't been able to learn how to navigate on the site. I have a no start condition. I have installed a new hpop, new ipr, new cam sensor, new icp, new fuel pump, two new batteries, new fuel filter, checked all my fuses(all good) and unclogged the exhaust backflow sensor tubing. I installed a gauge on the passenger side oil rail at the existing plug location and it it indicates that I only have 200 psi oil pressure when attempting to start. I ran a buzz test on the injectors with a scan tool I borrowed from a diesel mechanic and it passed according to the scan tool. I disconnected the ipr to see if it would start and still no start. When I push the shrader valve, it looks to have good fuel pressure(new pump). I cleaned the filter on the FPR and reinstalled. I tried to start the truck with ether (glow plug relay was disconnected) and still no start. I have fresh oil change and HPOP reservoir is full. Could this be caused by bad o-rings on an injector or multiple injectors? I need help! I am trying to avoid taking it to the stealership. Thanks for all your time and advice in advance.
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Old 12-30-2010, 07:53 PM
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Wow.... You have pretty much replaced everything.....

The IPR is not what you have to unplug, it is the ICP on the driver's side oil rail. 200 PSI is what will show if the IPR is not closing blocking the return. You can unplug the ICP and see if it will start, then I would check the IPR harness, IPR orings could be torn allowing oil to bypass the IPR, did you replace the coil for the ipr?
You are getting the buzz test so the IDM is working, ruling out fuse 22 under the hood.
I think it is narrowed down to those areas...
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Old 12-30-2010, 08:00 PM
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Are you getting any rpms or oil pressure on the dash while cranking???
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Old 12-30-2010, 08:08 PM
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Injector orings could be the culprit. Do you have any black gunk in the fuel bowl? That is indicative of bad injector orings. hows your batteries? Starter turning as fast as it should?
You will get this one figured out soon. Just post what you see on the dash while cranking. Are you getting the wait to start light?
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Old 12-30-2010, 08:14 PM
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ok lets start basic. have a WTS light?
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Old 01-02-2011, 08:14 AM
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No Start Condition

Thanks for all of your help! I did replace the coil on the ipr. I bought new batteries for it a week ago. The WTS light does come on. I also replaced the GPR just in case. I will try to unplug the icp to see if it will start. The icp is also new, but that doesn't mean it's good. I'll try it with the old icp also. It appears to have good oil pressure according to the dash gauge. The oil gauge jumps up to about the mid mark while cranking. The rpm gauge does move while it is cranking. I did notice some gunk down on the bottom of the filter housing when I changed the filter. I'd say it was about 1/8" thick with gunk down in the bottom of the fuel filter housing. I want to thank all of you for your time and help with my truck! I may need to order an oring set and go ahead and change out the orings on every injector.
The truck is a 1995 7.3 Powerstroke.
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Old 01-02-2011, 10:49 AM
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Is there any smoke when you are cranking over the truck?
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Old 01-02-2011, 07:30 PM
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There is no smoke when cranking over. Before the no start condtion, the truck would cut out while I was driving down the road. It wouldn't die at this point. Then it began to seem to lose power while driving even with the accelerator pushed all the way. It graduated from that to dying on me while driving. It would start and run again for about 5 minutes or less. I parked it for a few weeks and never been able to start it since.
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Old 01-02-2011, 07:35 PM
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Would the fact that it is not smoking while cranking be a sign that it is not getting fuel from the injectors?
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Old 01-02-2011, 07:48 PM
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Well its either a sign of no fuel OR (and this is more likely) the injectors arent getting the signal to fire. Id look into the wiring harness a bit and then the IDM
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