New hpop gasket & orings now no start

[Codum]

Ok help, my brothers 2001 7.3 was leaking oil at the hpop gasket. It was really bad and had a rough idel. I changed the mounting gasket and associated orings and now it will not start. Wait to start lite up, turns over fine just no start. I also cleaned up the ipr, new orings on it and the little brass spacer and brass nut. Any ideas. It was running fine till the leak got bad and I am guessing got low on oil, oil pressure. We checked the oil and had to add 4 quarts to get it in range. No start help! Thanks!

[jc82chevyman]

Check the hoop reservoir to make sure its full then attempt to restart once you open the system it needs to purge the air so they can take a bit to get started

[Codum]

thanks, yea I did that. for some reason it's not getting fuel. the fuel bowl is full and when I open the yellow valve to Drain it off it appears to be under very high pressure. normally when I open that valve it just drains out, now it sprays really hard like it is pressurized.
I never heard of this, any ideas.

[SCUFFY828]

dont worry about the fuel issue right this second , first like said before , make sure high pressure oil reservoir is full or at least say 3/4 of an inch from top , second double check your bolt on the front of the high pressure pump the 18 mm ,and that thick washer is in place , also need to get a scanner on this truck that monitors data and see what icp pressure is , then if all that checks out , then we can dig farther

i guess what im saying is , if the pump is the only thing you dealt with and truck was running before tear down and all you had was a oil leak , then dont get to thinking to deep until you go back over good what you have touched, dont take the wrong turn if you never touched fuei ln any way , may just be a air pocket from having the filter housing out

[Codum]

I checked the reservoir, I even left the plug loose as I turned over the motor to make sure it was filling up, after two revolutions oil was leaking around the plug so I tightened it down. I did the work myself and know I installed the nut and washer behind the tin cover plate on top of the water pump. I did not torque it down but got it so tight with the 2' long 1/2" drive that if I got it any tighter it would have stripped out. I feel good about it. I agreed with you Scuffy don't touch anything that I didn't touch on the repair as the truck was running prior to the repair. To do the repair, the fuel bowl is removed, fuel heater unplugged, fuel lines disconnected, HPOP removed, oil lines disconnected, heater hose disconnected, oil pressure senser unplugged,we did remove the ipr and replace the gaskets on it, replaced the non serviceable plug with the long thread version, put it all back together. just don't make sense. I appreciate the help! Checking into a scanner now.

[SCUFFY828]

ok so we have verified base oil pressure , im fairly sure its not a fuel pressure issue , im thinkin something goin on with ipr , did you dissassemble ipr to clean or just replace o-rings and you said also that you replaced the non serviceable plug , there is a plastic ball in there that can fall out if not carefull

[Codum]

We did clean the ipr? Just wiped it down got all the crude off, I did not see the plastic ball you are talking about. Sounds like I am taking it apart again, can I buy that ball somewhere? This was on my brother's truck, I did mine in the fall no issues, slow to start the first time but that's it, trying to save him a little money. never fails. Thanks for the help!

[jc82chevyman]

You might try guzzels there is a real good write up on his page with photos of that ball I think its actually dieselorings.com IIRC

[Codum]

Finally got around to working on the truck this afternoon, it was the bolt under the front cover. I felt like I had gotten it really tight, but when I put a wrech on it, it was really loose, took 6-8 to get tight. Started up on the second attempt. Drove it a cole miles to work out the air and it smoothed right up. Thanks for the help!

[audiocontr]

Its good to hear. You're spring on the FPR is caught on the outer ledge of the receiver. It didnt seat correctly when you took it off to install the O-Rings and thats why fuel shot out under pressure. Fix it before you get stranded.