96 12valve cummins dually
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96 12valve cummins dually
What can I possibly do to better my fuel mileage. It is automatic w/4 wheel drive and I'm getting about 12mpg. I have a friend with the same truck but a 98 and gets 17 to 20. I've installed new injectors and it didn't help at all. I'm running stock tires and everything else is pretty much stock.
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8 thousands intake and 18 thousands is what ive set valves at for years.. can tell the difference from 10 and 20 by driving it.
on a side note. i had this problem with my truck. the throttle cable got worn out. so i replaced it. not thinking anything about it. while off, have someone push your pedal all the way to the floor and get out under the hood and make sure you are getting all of the pump(make sure the pump opens all the way up when it is to the floor) it will cause it to shift funny and be at higher rpms all the time. there is no correct way to adjust this. a new cable is the same length. had to shim it on the pedal side.
let us know your findings and good luck
on a side note. i had this problem with my truck. the throttle cable got worn out. so i replaced it. not thinking anything about it. while off, have someone push your pedal all the way to the floor and get out under the hood and make sure you are getting all of the pump(make sure the pump opens all the way up when it is to the floor) it will cause it to shift funny and be at higher rpms all the time. there is no correct way to adjust this. a new cable is the same length. had to shim it on the pedal side.
let us know your findings and good luck
#7
Valve lash will help with power the lowest you can go is .08 Intake and .018 exhaust. I have a special tool to use to turn the engine over you may have to do it the redneck way and muscle the belt to turn the crank. There is a procedure to do this you have to start at TDC number one cylinder and do certain valves the trun it over 180 degress and do the next set. You should be able to look it up NAPA should have it on there website.
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