mpascino
07-06-2005, 15:05
Quick history, the motor was freshened up around 15-20K ago. Valves were lapped, heads completely cleaned and checked. New rings, pistons, bearings, seals, Prechambers, chain, gears, Injection pump rebuilt, and injectors cleaned. Banks Turbo equipped.
Driving home from work today, notice an increase in the diesel smell along with a lite haze of smoke from the hood. I am only a couple blocks away so I continue home. Open the hood and see the oil fill cap is worn and is not making a tight seal. I fix the problem and think nothing more of it.
Head back out an hour later, all is well. Start to notice a lack in power on the high way and notice EGTs are higher than normal. I hit the gas a bit to keep up speed and realize that boost will not pull above 5-6 psi and the egts climb right up to 1100 in a couple seconds. I start wondering if my air filter is clogged up or if I tore the elbow going in the turbo again. I come to a light and now realize the truck is shaking like mad and see the smoke from the hood again except worse. I pull into a parking lot and remove the oil cap. The smoke from the crankcase quickly fills under the hood. The truck basically sounds like it is missing a cylinder, maybe two. I checked the air filter discover it is normal except for the excess of oil at the bottom(from the excessive blowby).
The truck starts fine, and does not seem to be knocking. Oil pressure is around 60 psi or so. The truck never runs above 150-160 coolant temperature and still runs cool. There are no bubbles in the coolant or water in the oil, everything appears to be holding pressure.
What could cause this so sudden? I find it hard to believe a ring or piston broken with only 15K on them. Could an injector or valve be stuck? Would that increase blow by? Unfortunatly I do not have a diesel compression tester nor do I know where to get an inexpensive one in a hurry. I don't think I can even remove the glow plugs or injectors in cylinders 4,6, & 8 with the turbo and down pipe in place. The truck is my daily driver which leaves me in a spot. Any advise and suggestions are greatly appreciated. Thanks,
Mike Pascino
Driving home from work today, notice an increase in the diesel smell along with a lite haze of smoke from the hood. I am only a couple blocks away so I continue home. Open the hood and see the oil fill cap is worn and is not making a tight seal. I fix the problem and think nothing more of it.
Head back out an hour later, all is well. Start to notice a lack in power on the high way and notice EGTs are higher than normal. I hit the gas a bit to keep up speed and realize that boost will not pull above 5-6 psi and the egts climb right up to 1100 in a couple seconds. I start wondering if my air filter is clogged up or if I tore the elbow going in the turbo again. I come to a light and now realize the truck is shaking like mad and see the smoke from the hood again except worse. I pull into a parking lot and remove the oil cap. The smoke from the crankcase quickly fills under the hood. The truck basically sounds like it is missing a cylinder, maybe two. I checked the air filter discover it is normal except for the excess of oil at the bottom(from the excessive blowby).
The truck starts fine, and does not seem to be knocking. Oil pressure is around 60 psi or so. The truck never runs above 150-160 coolant temperature and still runs cool. There are no bubbles in the coolant or water in the oil, everything appears to be holding pressure.
What could cause this so sudden? I find it hard to believe a ring or piston broken with only 15K on them. Could an injector or valve be stuck? Would that increase blow by? Unfortunatly I do not have a diesel compression tester nor do I know where to get an inexpensive one in a hurry. I don't think I can even remove the glow plugs or injectors in cylinders 4,6, & 8 with the turbo and down pipe in place. The truck is my daily driver which leaves me in a spot. Any advise and suggestions are greatly appreciated. Thanks,
Mike Pascino