snw blue by you Posted April 14, 2005 Share Posted April 14, 2005 One of my problem children has come back again with yet another miss. Number 3 low and cyl.cont. Removal of the oil rail revealed the problem, the injector was split in half. One screw is missing and the other is broken in the body[Jughead's first day on the job?]. Has anybody seen this,and if you have, did you recover the missing screw/head? Is this thing a grenade waiting to go off? /forums/images/%%GRAEMLIN_URL%%/banghead.gif /forums/images/%%GRAEMLIN_URL%%/puke.gif Quote Link to comment Share on other sites More sharing options...
Keith Browning Posted April 14, 2005 Share Posted April 14, 2005 You must photograph this injector for me!!! It would be perfect for the photographs page. If you don't have a digital, a normal picture scanned is good enough or try to borrow a digital if you can. PLEASE!!!!!!! I beg of you. Nice usage of smileys and no, I have not seen this one. Quote Link to comment Share on other sites More sharing options...
G. Bedford Posted April 14, 2005 Share Posted April 14, 2005 We have had alot of them come apart just as you state. You have low fuel pressure allowing the piston and spring inside the injector to slam against the end until it blows the top off the injector. We have alot of overloaded oil field rigs in our area that on hard pulls will bring the fuel pressure to the low end OF SPEC. The new fuel pressure regulator kits have a longer/heavier spring that now holds pressure to the high end of spec. Ford has not mentioned they did this, that I am aware of, but the kit components have obviously changed along with the fuel pressure after replacement. When we called hot line on one vehicle and told them fuel pressure was 47psi, they said it was too low! Even though the diag. sheet shows that pressure to be acceptable. I would definately check fuel pressure. Hope this helps ya. Quote Link to comment Share on other sites More sharing options...
snw blue by you Posted April 14, 2005 Author Share Posted April 14, 2005 I did check fuel pressure and it was at 50 psi. When I spoke with the hotline, they never mentioned anything about this, in fact when I had a Navistar engineer w/ me awhile back on a different truck, that is what I had for pressure, which he felt was acceptable. This injector was a reman installed approx 4,000 miles ago by me. One thing I noted was the o-ring at the junction was cut. I am wondering if this was just a poorly rebuilt unit, though the fuel pressure issue has me intrigued /forums/images/%%GRAEMLIN_URL%%/thumbup.gif Quote Link to comment Share on other sites More sharing options...
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