03 no start hot runs poor cold

batmantech · November 8, 2012

This truck was towed in warm stalled on road. Icp is low 390-410 steady , ipr 84% ,rpm241. So I am looking for high pres oil leak. Since it is a 03 I decided to just pull the valve covers and look. Well thenm it started but ran slow power balance was even. until eot raised up then it stalled, now back to checking oil system. While cranking I see small amounts of oil coming out around most of the injector tops where it meets the supply log. Is that normal on the 03 "log"? Any other thoughts.(I am attempting to locate the block of tools now) This seems rare to be working on an 03 with this concern?

batmantech · November 8, 2012

update:

block off plugs 1500 psi. Air press on supply tube can see oil come up around top of injector top seal leaking.

batmantech · November 8, 2012

I see in the thread "6L injector nipple OIL RAIL o-ring kit and tool"- the seals are avalible as per Bruce Amacker's post on page 2

Is talking to yourself the first sign of insanity?

Whatever man it worked!

I think being diesel certified was the start......

Have a GREAT DAY!!

ktmlew · November 8, 2012

While repairing the leaks at the injectors may be a good idea to CYA for the future I suspect a HPOP will make the truck run.

10_51197125 · November 8, 2012

Remove the high pressure oil pump and look at real good and see if the round ball is missing, looks like a ball bearing, if so replace the pump and the J-tube.

batmantech · November 9, 2012

Ok, So I did dead head the pump by blocking off the flex lines at each head tube (per the High press oil pump test) and it passed 1525 psi. Does'nt that prove the hpop and tubes are ok?

ktmlew · November 9, 2012

I would have expected 4000 plus?

Matt Saunoras · November 9, 2012

with no where for the oil to exhaust the pump will make pressure even if it is weak. Is the IPR fully closed when it's only making 1525psi?

joshbuys · November 9, 2012

Ok, So I did dead head the pump by blocking off the flex lines at each head tube (per the High press oil pump test) and it passed 1525 psi. Does'nt that prove the hpop and tubes are ok?

That's definitely a weak pump if that's all it puts out with the block offs installed and IPR commanded shut, this system puts out 3000+ psi while driving (and that is with the IPR 'bleeding' off pressure).

Aaron · November 10, 2012

The pump will build awesome pressure with the block offs installed because it doesn't need to move nearly as much volume.

batmantech · November 10, 2012

Well thanks guys, I thought this didn't add up(just injectors o-rings leaking didnt seem like the only issue) that was one of he reasons I posted this here. I dont recall dead heading an 03 set up before. It does make sense that I should have more press but I started to wonder when the test states 1500 psi min. That word min should have been my first clue.

Anyway the new high press. pump and o-rings on injectors fixed the concern. Thanks again!