100hp injectors poor fuel mileage
LB7, I just replaced all stock injectors at 130,000 miles because of fuel in crankcase. I replaced with Scheid Diesel Lightning 100 hp injectors, and installed a FASS lift pump with filters. Runs great, has more power, doesn't smoke much.
I just pulled a trailer 500 miles empty at 74-79 mph and got 11-12 miles to gallon. Returned loaded with a Kubota RTV running 74-79 mph and got 10-11 miles to gallon.
When I push the speed to 79 mph (2400 RPM) empty or loaded the "service engine soon" light would come on. I am not sure what the code is, or how to get it.
Why is fuel mileage so bad? How can I get back to stock fuel economy of 15 mpg.
02 Silverado 2500HD Crew Cab 4X4, 132000 miles,
Scheid Diesel Lightning 100 HP injectors, FASS lift pump & filter
Last edited by Randy Gough; 11-29-2010 at 07:25 PM.
Reason: Did not list engine lb7