Ok I had just started my truck after letting is sit for about 45 minutes. I heard some unusual clicking noise that wasnt normally present so i turned the radio down... The higher the rpm got the louder it got. It sounded like a lifter ticking so, I thought it might be an injector going bad because I have heard thats what they sound like. So i had the truck in neutral revved it up to about 2 grand it missed at 1600 rpm the first time i did the this, the second time the same thing. After the third time it started missing on one cylinder at idle... So i got pissed off and revved it up to 2 grand again, it made a funny noise, like something sucked through the injector or something just sucked through the engine... The rattle was still present, it wasnt missing anymore and operated fine... I drove it home about 10 miles and parked it. Called a few diesel mechanics the next day. The one thats really well known in this area thinks the valve seat may have fallen out... Is this common on a 12V motor? Or is there something else it could be? Based on diagnosis which i wont know til next week sometime, I might not be able to afford to fix it... So I was just wondering if you guys may have any other ideas on what the problem could be? Thanks for the help

collinscummins's Sig:

1998 Dodge ram 2500 Cummins 12V: It has 90HP ddp injectors, 315/75/R16 Toyo M/T on ultra wheels, 5inch exhaust, ats intake manifold, s&b cold air intake, I dont know what is done to the fuel plate or timing, stock turbo, di pricol triple a pillar gauges, has a b&w turnover gooseneck, electric fans, kdp kit, fluidamper, as of right now it has 104,000 miles.

sounds like it might be the lift pump, mine was tickin when it went bad

cummins95's Sig:

95 dodge ram 2500 rc lb,KDP KILLED!!, 4x4, jasper reman trans with billet tc, no plate, starwheel in the middle, 4k GSK, afc forward, silencer ring gone, wastegate semi restricted, bhaf, primeloc remote fuel filter, 4in dp to 5in straight pipe with 5 inch black stack, 2095 mack rack plug, duramax wheels (my truck turns em better) oh n lots of stickers.

tickin... you dont say... we're having some problems with our truck and i've noticed an increase in "ticking" for awhile now. although after today when the truck randomly shut off i dont recall a ticking. plus horrible fuel mileage....

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my guess would be its either low fuel pressure (bad lift pump or overflow valve) or air getting into the system

tower_ofpower's Sig:

One thing i learned in college: DON'T!!! stick your fingers where you wouldn't stick Mr. Happy 89' W250, full fuel 1 1/2 turns, smoke screw needs adjustment, M&H M3 fuel pin and timing spacer, 366 spring, air dog 150,3" DP to 4" DP back bully dog exhaust with the front baffle cut out. Soon to be:transmission upgade, turbo and manifold swap, and injectors.