Crank no start - Ford Powerstroke Diesel Forum
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post #1 of 11 Old 01-12-2020, 11:27 AM Thread Starter
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Crank no start

Hey guys I got a crank no start issue. Drove the truck to the softball field and went to go get food when it happened. At first it started and died 4 times. Then nothing. Icp pressure was reading at 25 psi. Checked the voltage and it was at 3. Unplugged the icp valve and still didn’t start but the pressure went up to 740.

Had new heads studs updated standpipes and dummy plugs. Injectors. And updated stc fittings done 6 months ago. Aaa coming to pick up right now to take home and start checking things. Should I start with an air test or is there somewhere else I should check first?
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post #2 of 11 Old 01-12-2020, 11:38 AM Thread Starter
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Sorry it won’t go over 0.3 voltage

And it’s an 05 6.0
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post #3 of 11 Old 01-12-2020, 12:17 PM
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Tunes mess with the numbers, but voltages usually are correct
when you unplugged the icp, the pcm used a default number -- but that does not mean the pressure was actually there

Sounds like an air test is needed, even tho there are new parts
test thru the ipr port and leave the air on for a while to push any oil thru the leak

The ipr could be not closing -- even if your monitor shows a high percentage
the ipr plug is supposed to be clocked to the 5 o'clock position to help protect it from heat
12 volts is supplied to one terminal and pulsed ground to the other -- you can test with a light by probing the backside of the connector while it is plugged to the ipr valve
if you have an official back probe, or a small paper clip -- or Tee pin, be careful not to damage the wire insulation

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post #4 of 11 Old 01-12-2020, 01:12 PM Thread Starter
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Okay cool getting the stuff together to order for an air test right now. Pulled coded and I’m getting an u0306 code. Ipr is at 85% when cranking. And no oil pressure at all.
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post #5 of 11 Old 01-12-2020, 03:32 PM Thread Starter
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So after digging in some more I have no bad oil pressure and my oil filter housing is not filling up with oil
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post #6 of 11 Old 01-28-2020, 06:42 AM
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That's a tough one. Only easy thing to do is pull the low pressure oil regulator. It's got a spring and a ball. Next step would probably be inspecting the low pressure oil gerator..

Could be other things. I dropped a screw down a passage leading to the oil cooler. Had I not found that, I imagine I could have low pressure oil problems. Also, there's an oil pick up tube in the oil pan, but I thing you need to pull or at least lift the engine to even get at it.

If you find FOD though, it'll be a tough decision on what to do. Lot of people talk about finding a needle bearing from a lifter in the oil pump. Without changing those, I'd be worried about it going again. @bismic talked about adding a couple of neodynum magnets to the oil pan to catch that stuff.
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post #7 of 11 Old 01-28-2020, 06:59 AM
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Sorry @Ballard333 I totally dropped the ball

As @ChrisSki mentioned, you need to pull the pressure regulator(about 8o'clock position, at the front crank pulley) Look for sticking plunger or debris in the bore
Lifter needle bearings and injector seal retainers are the common objects in the pressure regulator
While you are checking, pry the crankshaft fore and aft to check for clearance, should be barely noticeable

In my defense, I was unsupervised
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post #8 of 11 Old 01-28-2020, 09:48 AM Thread Starter
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Quote:
Originally Posted by Hydro View Post
Sorry @Ballard333 I totally dropped the ball

As @ChrisSki mentioned, you need to pull the pressure regulator(about 8o'clock position, at the front crank pulley) Look for sticking plunger or debris in the bore
Lifter needle bearings and injector seal retainers are the common objects in the pressure regulator
While you are checking, pry the crankshaft fore and aft to check for clearance, should be barely noticeable
I completely forgot about this thread. I ended up getting it fixed. It was a bad ipr valve. I pulled it off and bench tested it. Ordered a new one put it in and about 30 seconds of cranking and it fired right up. Thank you though!
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post #9 of 11 Old 01-28-2020, 10:11 AM
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Hmmmmm...I wouldn't expect your IPR to have anything to do with low pressure oil, but maybe i'm wrong.

No issues since you put the new IPR in though?

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post #10 of 11 Old 01-28-2020, 10:18 AM Thread Starter
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I don’t think I tested it the right way. Are you suppose to push down on the plunger when you do it?

And nope it’s actually ran better idled better and started way faster than it was before. I was having long cranks and now it’s way shorter.
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