smoking problem
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Joined: Apr 2006
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From: houma, louisiana
smoking problem
i need some help on a smoking problem. i can start my truck and let engine idle and get very little smoke. after it idles for awhile and starts warming up it starts to smoke a little more. the more it warms up the more it smokes. if you tap the petal kind of hard you get a huge puff of blue smoke or it looks blue anyway. if you try to drive it when you take off it blows alot of smoke on take off, but not going down the road or until you put your foot in it. does anybody have any ideas or is this normal?
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Joined: Aug 2006
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From: Kent WA
Originally Posted by j tate
i need some help on a smoking problem. i can start my truck and let engine idle and get very little smoke. after it idles for awhile and starts warming up it starts to smoke a little more. the more it warms up the more it smokes. if you tap the petal kind of hard you get a huge puff of blue smoke or it looks blue anyway. if you try to drive it when you take off it blows alot of smoke on take off, but not going down the road or until you put your foot in it. does anybody have any ideas or is this normal?
I'm betting on the CDR as the most likely cause, valve stem seals as the second most likely, and oil control rings as least likely.....
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Senior User
Joined: Apr 2006
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From: houma, louisiana
cheaperjeepers i just serviced the cdr about a month ago and i probley add about one quart for every 1000miles of use , i was betting on the valve stems as the guilty culprit,i hope any way.
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From: Monroe, WA
The valves would have to be practically swapping guides with each other to eat that much oil. Usually the only way to really burn oil is by the rings. This doesn't always mean low compression either.
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Joined: Apr 2006
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From: houma, louisiana
sorry spectra it is a 1985 6.9 liter , no turbo. the motor has about 230,000 miles on it. ive serviced cdr recently, changed all of the return lines and o rings, new filters, water seperator has been disconnected, changed rubber hose on lift pump comming from tank, but i still think i have an air intrushion some where because of the hard start probblem. i hope this can help for the diagnosis?
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From: Monroe, WA
Ever replaced the tank to tank valve on the frame? They can give you air problems, usually a quit while driving though. Starting air is usually from the return system. Double check the hoses around the big fuel pipe that runs from the inj. pump to the back of the engine. How's the rubber inside the top of the pump fitting?
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Senior User
Joined: Apr 2006
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From: houma, louisiana
spectra never changed tank valve but ive changed just about every rubber hose on the top of the engine. im not sure about what rubber piece your talking about, is it on the injector pump or the lift pump?
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