Quote:
Originally Posted by dieselbenz1
I was poking around and found this
Delivery-valve problems are cylinder specific. If the valve sticks open, no fuel passes to the associated injector. Leakage is harder to diagnose. White smoke that persists after all bases have been touched—pump pressure and timing, new injectors, and engine compression—suggests that one or more delivery valves may be at fault. Disassemble one valve at a time, clean the parts thoroughly, and test for leaks by blowing through the outlet port. Older, simpler valves can sometimes be resurfaced. Check piston fit by depressing the valve and placing your finger over the inlet port. You should feel the vacuum as the piston falls.
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This is another good point for mine, I've had smoke the entire time I've owned the engine. I would have thought swapping a different injection pump with different delivery valves in would have helped or at least changed things significantly, but with a used pump who's to say what condition all of that was in.