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1320Fastback
Oct 13, 2021Explorer
12 Valve Cummins is my daily driver. First make sure there is diesel in the fuel tank, at least 5 gallons. Remove the fuel filter and fill with diesel and reinstall. To prime you need to find the 10mm bleed screw just above the fuel filter. It will be in the center of a 17mm bolt holding the fuel delivery pipe from the filter to the injection pump. Crack the 10mm bleed screw open and manually move the lever on the fuel pump. This will remove the last bit of air in the filter housing, then tighten the 10mm screw. Crack all 6 injector lines loose at each injector and go back to the manual prime lever and manipulate it until bubbles start leaking out at the injector lines. Once it looks like pure diesel and no air tighten the line. You may have to turn/bar the motor over by hand a little to bleed the next injector. Continue untill all are bled and tighten them as you go.
I know it sounds like a lot of work and it is but it will fire and run. I've completely rebuilt my injection pump, changed injectors and lines before and it always fires off and purrs like a kitten if you take the time to purge the air out.
I know it sounds like a lot of work and it is but it will fire and run. I've completely rebuilt my injection pump, changed injectors and lines before and it always fires off and purrs like a kitten if you take the time to purge the air out.
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