No start! LPOP help

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Apr 14, 2017 | 05:16 PM

blue66tang95f150

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No start! LPOP help

Hey guys, well my truck won't start and has no smoke. I know its not the glow plugs. I believe the HPOP is not getting any oil. Anybody know what could cause that. It fired right off this morning, ran for 3-5 seconds and then shut down and won't start now. It has been doing the 3-5 seconds thing for almost a year, but usually it fires up after cranking for 5 seconds or so and will run fine all day.

Other than the low pressure pump, what could cause this? I have checked everything else and i know it is not getting any oil to the HPOP. I even poored oil into the HPOP reservoir and it fired right of, but again only ran for about 3-5 seconds.

Apr 14, 2017 | 05:19 PM

z31freakify

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From: Las Cruces New Mexico

Injector O rings, check your fuel filter and see if it's black.

Apr 14, 2017 | 05:27 PM

blue66tang95f150

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Fuel is fine. Has something to do with oil. Started right up when i filled the hpop with oil. Its not getting oil up to it i suspect.

Apr 14, 2017 | 06:32 PM

madpogue

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From: Madison, WI

Does the dash oil pressure "gauge" move when you crank it for several seconds?

How's the oil level (gotta ask....)?

Apr 14, 2017 | 08:19 PM

fordman67

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From: evansville in

Check oil level!!!!!!!!!!! After its full if it doesn't run then check oil pressure . incorrect hpop gasket will let resivour go empty when sitting...ask me how I know that...

Apr 15, 2017 | 11:28 AM

blue66tang95f150

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Quote:

Originally Posted by madpogue

Does the dash oil pressure "gauge" move when you crank it for several seconds?

How's the oil level (gotta ask....)?

No the dash oil gauge does not move. Yeah that was one of the first things I checked was the oil level.

Apr 15, 2017 | 11:32 AM

blue66tang95f150

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Quote:

Originally Posted by fordman67

Check oil level!!!!!!!!!!! After its full if it doesn't run then check oil pressure . incorrect hpop gasket will let resivour go empty when sitting...ask me how I know that...

I did.

Well I ordered a new LPOP for it. I bought a high volume melling one from summit. Not to bad at 135 bucks. I also had a mechanic tell me to check the check valve just under the HPOP on the drivers side of the valley. Is under a 3/8 plug. I got the plug out, but didn't have a magnet to get in there to pull the ball out. i will check that this morning.

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Apr 15, 2017 | 12:47 PM

BBslider001

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From: Texas

If the ball is there, you are good to go. What Adam meant was check your fuel to see if it has oil in it. If your oil level is low enough to not fill the reservoir, it's going somewhere. It is a legitimate thing to rule out. I know his from personal experience. You can easily check oil pressure with a $25 Harbor Freight kit and the plug above the oil filter. It screws right into that port and you crank away while watching to see if it builds or not. LPOPs are usually not the reason, but it could be. I would have checked pressure before replacing it, but that's because I learned the hard way just a couple of months ago.