White smoke rough running untill warm
#1
White smoke rough running untill warm
Hoping some of you may have been down this road. My 97 12 valve starts very well, fast. The grid heaters are working and do cycle after start. my problem is the truck smokes out the whole yard. dosent matter if i let it run for a half hour to warm up. shortly after driving the rough running clears up and white smoke goes away. the engine seems to have a noticable low rpm chatter at all temperatures. the truck does not ever stall and always starts very quick so i am pretty sure air is not getting in the fuel system.
little history,
i have about 5000 miles on complete engine rebuild. mahle marine pistons, head studs, .020 thicker marine head gasket, head and block resurfaced .010 each, 60lb valve springs, cummins factory replacment lift pump, new fuel filter, 4k governor springs, afc spring kit, #100 fuel plate full forward, timing set at 17 degrees- has been double checked, fuel pressure at injection pump is a constant 15-20 psi,
ddp2 injectors, factory turbo, k&n air intake, 4" exhaust
any ideas? is it due to the open dish marine style piston. i am pretty sure compression ratio
has not changed much if any at all. also i tried lowering the timing to factory settings. did not change. i swapped the injectors back to the 215's did not change. i even tried a new bosch overflow valve. by the way the injection pump has 300k on it. i do not remember the truck being this way before the engine was rebuild, but that was last winter...
little history,
i have about 5000 miles on complete engine rebuild. mahle marine pistons, head studs, .020 thicker marine head gasket, head and block resurfaced .010 each, 60lb valve springs, cummins factory replacment lift pump, new fuel filter, 4k governor springs, afc spring kit, #100 fuel plate full forward, timing set at 17 degrees- has been double checked, fuel pressure at injection pump is a constant 15-20 psi,
ddp2 injectors, factory turbo, k&n air intake, 4" exhaust
any ideas? is it due to the open dish marine style piston. i am pretty sure compression ratio
has not changed much if any at all. also i tried lowering the timing to factory settings. did not change. i swapped the injectors back to the 215's did not change. i even tried a new bosch overflow valve. by the way the injection pump has 300k on it. i do not remember the truck being this way before the engine was rebuild, but that was last winter...
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