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  1. 6.5L Diesel Engine
    I have a 6.5 that has terrible mileage (7mpg) and I am wondering if it could be head gaskets it only smokes white on startup because it is winter and there is no bubbling or pressure in the coolant resivour I don’t seem to lose coolant either?
  2. 6.5L Diesel Engine
    I have a 1998 k1500 with a 6.5 with 350,000kms it has a 6” lift and 35s I am currently getting about 7mpg The engine is stock other than cold air intake and vacuum line to egr is plugged, i want to know how to get 15+ mpg. I believe my injectors need to be replaced as it smokes white for a bit...
  3. 6.5L Diesel Engine
    I purchased a 1996 Burb with a 6.5 that had a "new" engine, It is supposed to be a new block, new heads, then anything that could be reused was (crank, oil pan, front cover....). It has a fresh rebuilt injection pump, new turbo (GM-5), new PMD with resistor (I think it is probably a number 9)...
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