Diesel Bombers - 12 valve misses under load

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97cumminskid

07-10-2011 01:13 PM

12 valve misses under load

today my truck started missing once it got any load on it. it stoped doing it for awhile then started up hte next day its intermitent when it does it. im pushing 40 psi of fuel presure but it drops to like 5 when i get on it. any help would be great. thanks you. O and the tranny is going out bad if that helps any.

big_dog37074

07-10-2011 01:48 PM

could be air getting in some where, could be lift pump getting weak had the same problem, but mine didnt drop to 5. It drop down to 15. The tranny want have anything to do with the fuel presure dropping. whens the last time you changed the fuel filter. hope this helps

97cumminskid

07-10-2011 02:23 PM

not to long ago. i just pulled the ofv and un modified it and it still cuts out. it only does it around 1500 rpm and it will do it in idle by just reving it up. thanks for the pointers

---AutoMerged DoublePost---

found it. slipped a jam nut on the 5 cylinder

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