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Old 12-17-2012, 10:06 AM
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HELP... WONT STAY RUNNING!

IVE GOT AN 03 F350 6.0 SHUT OFF ON START UP ABOUT A WEEK AGO. STARTED OUT INSTALLING A NEW FUEL PUMP ASSEMBLY. NO LUCK THE INSTALLED NEW ICP AND PIGTAIL, STILL NO LUCK. SO I PULLED VALVE COVERS AND PRESSURISED THE OIL RAILS DRIVERS SIDE WAS FINE. PASSANGER SIDE I COULD STILL HEAR AIR AFTER CLOSING IPR SO I REPLACED IPR THINKING THE THAT VALVE WASENT CLOSING ALL THE WAY STILL SAME ISSUE. WHEN I GOT MOTOR ALL PUT BACK TOGETHER I STARTED AND IT STAYED RUNNING FOR ABOUT 20 MIN AND THEN SHUT OF AND THE MORE HEAT THE MOTOR GOT IN IT THE SHORTER AMOUNT OF TIME IT WOULD STAY RUNNING NOW THE TRUCK WONT RUN FOR MORE THEN ABOUT 2MIN. ALSO PULLED BOTH STAND PIPES AND CHECKED BOTH ORINGS ON STAND PIPES

PLEASE HELP!!!
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Old 12-17-2012, 01:32 PM
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First, no need to type in all caps, makes it harder to read. Do you have a monitor.......Write Up: Monitoring the 6.0L PSD.

If not, it will save you alot of money in geuss work. Is the truck smoking, was it smoking prior to shuting down? Check for combustion gases in the fuel rail, remove the upper fuel filter, hfcm fuse, and ficm relay. Crank the truck over and see if you have combustion gasses in the housing. Have you checked the egr to see if it is stuck open? Are you running motorcraft filters with matching cap, and a good quality oil?

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Old 12-17-2012, 01:52 PM
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Sry about the all caps.

Yes I have ford Ids with vcm2. Truck is not smoking now or when problem first started. Checked for gasses this afternoon and pulled egr and put in a new spare that I had. Truck dose have new motor craft filters and fresh rotella

After posting this I also pulled oil pressure and installed manual guage to make sure that motor had low pressure guage went to 35psi

And while cranking on motor will only build around 360psi on icp pressure but get truck to run if u spray it but still only builds around 600psi and will only run for about 5 minutes before pressure drops and truck shuts off but you can slowly watch pressure drop within the 5 minutes and truck will only run if u spray it

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Old 12-17-2012, 01:59 PM
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Check the STC fitting and the dummy plug and stand pipes, more than likely one of those is you failure point.
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Old 12-17-2012, 02:14 PM
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Quote:
Originally Posted by Eric@PTP View Post
Check the STC fitting and the dummy plug and stand pipes, more than likely one of those is you failure point.
He has an 03', op you dont have the famed "stc" fittings that fail, but you do have stc fittings on the hpo hoses under both valve covers, and you have standpipes. No dummy plugs. As suggested, you have an oil leak somewhere, best to repeat the air test again. Could be the check ball in the hpop that popped out, hpo hoses, injector o rings, or standpipes. I'm guessing check ball at this point.

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Old 12-17-2012, 02:22 PM
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Quote:
Originally Posted by southend View Post
He has an 03', op you dont have the famed "stc" fittings that fail, but you do have stc fittings on the hpo hoses under both valve covers, and you have standpipes. No dummy plugs. As suggested, you have an oil leak somewhere, best to repeat the air test again. Could be the check ball in the hpop that popped out, hpo hoses, injector o rings, or standpipes. I'm guessing check ball at this point.

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Yep, I missed that it was an 03 sorry. But I agree there is a oil leak somewhere.
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Old 12-17-2012, 02:23 PM
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Low pressure system should be greater than 40 psi so you have a low pressure leak somewhere which also be why your looseing hpoil pressure. LPOP not putting out enough oil flow to keep the HPOP resivoir full and allow gradual loss of HPoil pressure.

Check your LP regulator for damage/leak and the filter components for anything fubared.
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Old 12-17-2012, 04:22 PM
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I checked the orings on the stand pipes and just went ahead And replaced them sence I had them out. And sence I've already air tested the rails would it be better to plug the rails and pressurize at the icp?? And I've heard of the branch tubes leaking but never seen or heard one leak what would you look for when checking the branch tubes?

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