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Old 01-16-2013, 09:54 AM
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Angry Engine died, now no start

While driving on the interstate, the engine shut down, no warning, or codes. I have had trouble with IPR clogging in the past, engine cranks fine, just won't fire. Scanner says no hop to fire injectors. I have commanded the valve open and closed, and it appears to be moving. My question is, if its clogged, would that cause a no start? I have had the valve replaced three times now. 2006' f350' new injectors, egr delete, new turbo, new oil cooler, new exhaust, edge with attitude cts. Any advise is appreciated.
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Old 01-16-2013, 09:57 AM
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What was the IPR getting clogged with so much? 3 times seems a littls strange, if it was metal I would almost say your pump was coming apart??
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Old 01-16-2013, 10:01 AM
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Not metal

When I got truck, it had been neglected.... The oil filter had come apart from not being changed when needed. There was a large amount of crude built up in side, it is going away after many oil and filter changes, but has still caused a lot of grief. When the oil cooler was changed, we did replace the screen as well.
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Old 01-16-2013, 10:01 AM
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Sure sounds like a HPOP being your IPR was so dirty...
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Old 01-16-2013, 10:26 AM
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A clogged screen will cause a no start. I'd remove and inspect the IPR and then reinstall it and then do a HPO air leak test.
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Old 01-16-2013, 12:43 PM
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HPO air test

Anyone a link, or easy instructions on how to check the HPOP with air? Thanks
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Old 01-17-2013, 01:20 PM
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Running again

OK, so we pulled the IPR valve, small tear in screen, some trash on it as well, but not neaqrly as bad as I would have thought. Replaced it with a new valve and she fired right up. This is another one out the window. Not sure where the trash is coming from, or how much more there is..... I dont want to keep replacing this thing every 5-6k miles..... Thanks to everyone that helped.
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Old 01-17-2013, 02:05 PM
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I thought a plugged screen is a very good sign of failed/failing pump ?
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Old 01-18-2013, 06:50 AM
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From all I have been reading, if the trash or debris is metal, then YES, the pump is failing most likely. Mine is not metal, just sludgy oily crude. I was told the truck went over 50,000 without an oil change, and at one point, the filter had come apart. I have changed the oil every 4000 for the last twenty now in hopes of cleaning it out. I'm a little scared of trying to flush it with something, in fear it may break too much loose at once, and then I will be chasing cloggs everywhere. Any advice from anyone else on this issue is truely appreciated.
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Old 01-18-2013, 06:54 AM
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just to clarify your running motorcraft filter and oem cap correct ?
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hpop bad, ipr, no start

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