Hey guys, I am working on a 1989 F250 4x4 5spd 7.3. Problem is white smoke at all times, smells like fuel. This is a recent purchase, it smoked when I bought it. Miles are unknown, and history is pretty much unknown, although I can ask the seller some questions.
It is a somewhat hard to start, cranking 3-5 times before starting. Idles at 800 rpm (high). It feels pretty smooth at idle, not unbalanced. Every so often it will "sneeze" or make a puff of more white smoke. It will rev willingly, although it might stumble a bit then take off, making lots of smoke mostly white, some dark gray.
Rebuilt engine, new crank and cam bearings, etc.
Low mileage injector pump from 1990 truck.
New injectors from mylex international.
New orings and return lines.
Things I have done:
-Turned the fuel screw down, seller said it was up 1/4 turn, so I did 1/4 turn ccw. No difference.
-Advance timing, approx 1/16" to passenger side, ccw facing front of engine. No difference. 1/16" between the scribe marks feels like that is about all the pump will turn.
-Cracked each injector line, all affect idle smoothness. (I did this under the hood, and didn't watch the tailpipe closely, but I did not discern any change in smoke) No difference.
Running out of ideas...
Last thing I want to try is to verify timing is right in case the gear housing was taken off the engine.
Any else I can try?
It is a somewhat hard to start, cranking 3-5 times before starting. Idles at 800 rpm (high). It feels pretty smooth at idle, not unbalanced. Every so often it will "sneeze" or make a puff of more white smoke. It will rev willingly, although it might stumble a bit then take off, making lots of smoke mostly white, some dark gray.
Rebuilt engine, new crank and cam bearings, etc.
Low mileage injector pump from 1990 truck.
New injectors from mylex international.
New orings and return lines.
Things I have done:
-Turned the fuel screw down, seller said it was up 1/4 turn, so I did 1/4 turn ccw. No difference.
-Advance timing, approx 1/16" to passenger side, ccw facing front of engine. No difference. 1/16" between the scribe marks feels like that is about all the pump will turn.
-Cracked each injector line, all affect idle smoothness. (I did this under the hood, and didn't watch the tailpipe closely, but I did not discern any change in smoke) No difference.
Running out of ideas...
Last thing I want to try is to verify timing is right in case the gear housing was taken off the engine.
Any else I can try?
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