truck will not fire up changed ignition module ECM module checked for spark from oil to cap and to plug all good but will not start was driving when it stopped running what is the problem ??????
Check for proper fuel pressure. The fuel pump or related part may be in need of repair or replacement. You can try spraying a small amount of starting fluid into the intake to see if it runs briefly. If so it is not getting fuel or injector pulse.
Fuel pressure should be 9 to 13 lbs. Change out the fuel filter first.
Oh, I agree with Bob.
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