7.3 reseal hpop cranks no start - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 11-07-2011, 03:47 PM Thread Starter
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7.3 reseal hpop cranks no start

Help! I can usually figure this stuff out on my own but I'm at a complete loss. I'm working on a 2001 7.3. It had an oil leak coming from underneath the hpop ( nothing easy like a hose or plug of course). So I pulled and replaced the seal ( ford replacement) and now it will turnover, no start. I filled the hpop res. And it is staying full. Checked the fuel, it is pumping and I replaced the filter while I was at it. Oil is full, put new batteries in it because I had been cranking on it for a while and really I just can't think of anything else. Truck has a new cps now. Just because I had a spare. Any suggestions would be greatly appreciated, supposed to send my wife to tx in a few days and I just need it fixed right. I would have it towed to ford but they told me they were behind a couple of weeks.

2006 King Ranch
AFE stage 2
4.5"down to 5" straight out
edge w/ hot tune
egr delete
4.5" donhoe lift
35" nitto mud grapplers
protech box and headache rack
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post #2 of 10 Old 11-07-2011, 04:30 PM
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Air in the system possibly.
Any ANY loose connector you didn't plug in?



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #3 of 10 Old 11-07-2011, 05:15 PM Thread Starter
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I am not sure how to get all the air out of the pump, I filled the res. And cranked it over a few times. Pulled the plug off the top and let it bubble about 15times?? I just unplugged and replugged all the connectors and still nothing. Against my better judgement I even tried eather. It will run on that. So I pulled everything off again, couldn't find one piece that was bad, the only thing I can think of is maybe the gasket didn't seat right?? I actually bought 2 because I have a bunch of these trucks and I figured if one went out on anouther truck will eventually. So I'll try to put it all back together in the am.

2006 King Ranch
AFE stage 2
4.5"down to 5" straight out
edge w/ hot tune
egr delete
4.5" donhoe lift
35" nitto mud grapplers
protech box and headache rack
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post #4 of 10 Old 11-07-2011, 05:29 PM
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if the gasket is sealed or not it should build HP oil Pressure. You need to verify icp pressure while cranking, either with a scan tool or manual gauge, sometimes I use both.

2000 f-350 CCSB
Fabtech 10" with ladder bars
dual fox shocks w/Res
20x12 rockstars wrapped with 40x15.50 toyos
04 lariat leather inside
banks cac, big head wg, compressor wheel
road armor bumpers front and rear
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post #5 of 10 Old 11-07-2011, 05:51 PM Thread Starter
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I don't have a scanner, where can I plumb in a manual gauge? Also I undid both oil lines and cranked it over before I pulled it out and both pumped fluid. One question though, I unscrewed the smaller plug on the bottom drivers side of the pump and replaced the gasket, it couldn't have misaligned pressure plates or something could it? ( not sure what type of pump it is).

2006 King Ranch
AFE stage 2
4.5"down to 5" straight out
edge w/ hot tune
egr delete
4.5" donhoe lift
35" nitto mud grapplers
protech box and headache rack
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post #6 of 10 Old 11-07-2011, 05:57 PM
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Do you have the ipr plugged in on the pump??

2009 F350 CCSB 6.4L PSD,2wd converted to 4WD, Auto, H&S Mini Maxx, Edge CTS Insight,5 inch exhaust.

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post #7 of 10 Old 11-07-2011, 06:00 PM Thread Starter
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Yep. And when I crank the engine over it shows oil pressure. I know is a different pump.

2006 King Ranch
AFE stage 2
4.5"down to 5" straight out
edge w/ hot tune
egr delete
4.5" donhoe lift
35" nitto mud grapplers
protech box and headache rack
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post #8 of 10 Old 11-07-2011, 06:08 PM
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You can measure the voltage on The icp sensor, should be directions on the site, or remove the icp sensor and screw in a hydraulic pressure gauge. Minimum is 500psi to start the engine, sensor is located in the drivers side head in the oil rail.

2000 f-350 CCSB
Fabtech 10" with ladder bars
dual fox shocks w/Res
20x12 rockstars wrapped with 40x15.50 toyos
04 lariat leather inside
banks cac, big head wg, compressor wheel
road armor bumpers front and rear
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post #9 of 10 Old 11-08-2011, 11:38 AM Thread Starter
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fML! So I went through and resealed everything, cleaned all the plugs,topped off oil again, and nothing. Put a gauge on the drivers side head, well over 500psi. Shot it with eather, started! So I thought finally thank god, let it run for about 5 min, attempted to start again, NOTHING! WTF shot it with eather again runs fine, I'll try to shut it off and start it again in like 30min.

2006 King Ranch
AFE stage 2
4.5"down to 5" straight out
edge w/ hot tune
egr delete
4.5" donhoe lift
35" nitto mud grapplers
protech box and headache rack
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post #10 of 10 Old 11-08-2011, 02:33 PM
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Please unplug your GPR so that the GPs won't predetonate the ether.
Maybe it's fuel related? Just trying something.

Or maybe you need to run it for more than 5 mins. Get it started, drive it hard to get any air out, then try later again.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
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