Diagnostic Help Required

[S Phinney]

It's a long story but here it is. I'm driving my truck to work this morning and it acts up like an injector. It gets noisy and white smokes for a couple seconds and go away. The second time it does this I have driven another 70 miles and it does it a lot worse and it last for 10 seconds or so. The final time it does it is about 10 miles down the road and it isn't as severe in noise or smoke but last until I shut it off. It will not start when I try to crank it again. I had it towed home and began doing some test. Fuel return, compression test, and will be doing a high pressure leak test. When logging it only makes around 275 psi cranking pressure which isn't enough to fire it. Give me some more ideas. i believe it may be an injector but it may be the FPRV too. Its a tough one to figure out when you can't start it. All help is greatly appreciated.
Shane

 

[2500HeavyDuty]

sounding like an injctor.

do a high pressure leak lest and then you can do a fue return rate test as well. there are specs for that test in the henry section i think

 

[S Phinney]

The injector fuel return didn't show anything wrong. There was no fuel leaking into the cylinder like it would on a white smoking injector. I still have to do a high pressure test tomorrow.

 

[S Phinney]

I did have a 1094 code also.

 

[S Phinney]

Several test done and still no definite answer. Anymore ideas out there?

 

[S Phinney]

I got it figured out. Was one big mother----er though.

 

[Akdiesel]

what was it?

 

[skintback]

Bad cp3

 

[S Phinney]

Cp3's and some Injectors returning fuel. It's a little harder to diagnose when it won't start. I had to go old school to figure it out.

 

[TrentNell]

Cp3's and some Injectors returning fuel. It's a little harder to diagnose when it won't start. I had to go old school to figure it out.

Glad you got it figured out Shane , sucks its both , that is going to be spendy

 

[wdino73]

Sorry to hear about your trouble,, glad u figured it out though,,,, bitter sweet,,,,,

 

[S Phinney]

Glad you got it figured out Shane , sucks its both , that is going to be spendy

Already put the pumps on it. I took the injectors out today and sending them back tomorrow to get her checked out on the bench and hopefully running again soon.