Quote:
Originally Posted by jtmarten
My '96 K2500 w/7.4 is running rough. I've replaced:
cap, rotor, fuel pressure reg, injectors (Bosch Design 2's), plugs, wires.
Had it timed today and it still runs rough. Really rough sometimes. I'm getting no codes. 
In the morning when the engine is cool, I'm going to pull the pugs and check them, and verify the plug wires are installed correctly.
Any other thing(s) to check??
I'm supposed to leave for the Chicago area with it on Tues, but not if its running this poorly. |
with no codes fuel pressures must be read and the test proceedure done. no leak down on pressure. pressure to 60-65psi and hold key on engine off.
if you run on 1/4 tank all the time the fuel pump is most likely cooked especially with all the 90 plus heat.
if you have bad wires/rotor/cap/distributor/maf/map etc you will get codes !