Hey all I'm working on my 03 6.0 and have some questions for the been there done that guys. I bought an 03 6.0 140k F350 and it's been nothing but a headache. Went out one morning and had a crank no start. Bought a scan gauge II to help figure out what's wrong and I came up with low oil pressure from the hpop. Tore it apart replaced it with a reman from diesel care and it fired right up. Drove it maybe 25 MI and it died. Towed it home took out the ipr and it was caked with crap. I installed a new ipr and fired back up. At this point I decided I hate ford's and want to sell my turd so I shine it up but on the test drive with the potential new owner it dies and leaves me stuck with a tow bill home. I crank watching the gauge and it comes back with ipr at 85 percent and icp in the high 300s. So I take it back apart make sure the d ring and orings are in their proper spots and in good shape. And they are. Tried a new ipr with no luck. So with it all apart I applied air directly to the hpop an can hear a gurgling from below. This new hpop has no more then 50 miles on it so I highly doubt it has failed. I've never done a pressure test and not sure what sounds are normal or what to look for. When air is applied to the top Of the pump still in the truck should any air be seeping out the bottom? And if so what does it mean?

 

Also I removed the hpop discharge tube and applied air. Couldn't hear anything at first but when I took the oil cap off and used a funnel I could hear a faint gurgle on the passenger side. My question now is should I assume that a injector o ring ***** or nipple oring failure.?

 

Are you commanding IPR closed during the air test?

 

No the hpop cover was removed and air was applied directly to the top of the hpop. Sounds like air is getting past or going through it directly below. I removed the discharge tube after that and applied air to it and that's when I could hear a faint gurgle Coming from the passenger side under the valve
cover

 

Not necessary. By doing the air test with the cover (and IPR valve) removed and he is taking the IPR out of the equation.

 

Missed that part.

 

The next step would be to remove the HPOP and discharge tube. Now using a rubber tipped nozzle, apply pressurized air directly into the branch tube. By doing this, you are taking IPR and HPOP out of the equation. Any leak at this point will tell you if you are going left (driver side) or right (passenger side). If no leaks are heard, your issue remains with either HPOP, IPR or LPO supply.

 

Here's a little illustration.

 

Precisely. And my suggestion was to insert a rubber tipped (air tight) blower into where the yellow circle is in the illustration posted above.

 

 

Also it is at all unheard of for the remaned OEM pumps to be bad from the get go, or very soon afterwards. I have gone to using only the Adreneline pumps on the early style, no more problems. I had put 3 OEMs on a friends truck and the longest one lasted was 30 days, first one never even fired up.

 

Thanks for the replies guys. I modified a wrench and did just what you have described. I could hear some gurgling on injector #3. After pulling it I couldn't see anything wrong with the top oring on the inj. I pressure tested the oil rail and all looked Good. If there is a small leak I'm not sure it would be big enough to cause the pump to bleed off that much pressure. In your experience how significant of an air leak would it have to be to cause a cold all of a sudden no start. I'm leaning towards a bad hpop. I called diesel care and they said it was 8 days out of the year warranty and they would do nothing about it. Should change the name to we don't care. Stay away from those frauds

 

That sucks jetjockey! I wish mine would of lasted 30 days. I at least could.of drove it to the dealer for a trade in.

 

Thanks for the replies guys. I modified a wrench and did just what you have described. I could hear some gurgling on injector #3. After pulling it I couldn't see anything wrong with the top oring on the inj. I pressure tested the oil rail and all looked Good. If there is a small leak I'm not sure it would be big enough to cause the pump to bleed off that much pressure. In your experience how significant of an air leak would it have to be to cause a cold all of a sudden no start. I'm leaning towards a bad hpop. I called diesel care and they said it was 8 days out of the year warranty and they would do nothing about it. Should change the name to we don't care. Stay away from those frauds

 

You have only put 50 miles on this truck in the last year? You stated you put 50 miles on the truck since the HPOP but it's 8 days out of the one year warranty.

Get the Adrenaline pump unless you like taking the HPOP cover off more than needed. OEM remans are sort of a gamble. You might get one that will go 100k plus or 10 miles(or less)