1st Generation Dodge Cummins 89-93Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps
I have a 92 Dodge D250 with no modifications other than an Air Dog Fuel Pump and all of a sudden I have no power and fuel mileage went from 19-20 miles to the gallon to 8 miles to the gallon.....I have to put the ... JOIN NOW TO REMOVE TRACER
I have a 92 Dodge D250 with no modifications other than an Air Dog Fuel Pump and all of a sudden I have no power and fuel mileage went from 19-20 miles to the gallon to 8 miles to the gallon.....I have to put the pedal to the floor just to get up a slight incline. Does this sound like a Turbocharger? Not sure what would effect me so dramatically like this..
If it is a Turbo and I need to change, any recommendations for replacement? Can I troubleshoot myself?
So it's getting plenty of fuel, but not enough air - major boost leak? Torn intercooler connector?
Don't push it too hard like that - EGT will be through the roof.
No turn connectors, don't know about a boost leak but is the turbo is no working at all that would be the same? Don't know what a "EGT" is but I was on a trip back to my home and had to drive 8 hours straight in this condition...couldn't get over 65 miles an hour on the level, about 55 mph on a grade blowing black smoke the whole time...
Last edited by robinlbird; 10-14-2011 at 11:46 AM.
Reason: Automerged Doublepost
EGT=exhaust gas temperature, I agree on a possible boost leak. Look all the rubber boots over real good and check to make sure none look as if they have moved on the piping I"ve seen the clamps fail. If there are no obvious leaks do an either check. Why do you suspect the turbo, is it making extra noise or some squealing sound which could also be a boost leak? Most turbo failures on stockish engines are oil leaks and not complete turbo failure. Rocky
i agree with them it has to be a boost leak the stock boots tend to dry and split
I can't find any evidence of a boost leak....I took the hose off of the intake and revved the engine and the pressure was enough it was hard to put my hand over it.....not sure how I would actually check the boost since it is a 2" line. Not sure how I would take a pressure reading to get exact measurements.??
Checked all of the boots (at Turbo, both sides of Radiator and at the intake).
Basically my theory that the turbo might be bad seemed to be false so I have no idea what to check next.
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