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Originally Posted by fireman1073
put good diesel in your oil tank and see if it runs good.
if it does then your problem is related to the diesel side system not the fuel.
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excellent idea, but I already tried it. Used known good diesel, all tanks, filters, lines in the car are clear of bad fuel. Original batch of suspected bad fuel was in the diesel tank, not veg tank. It was diesel fuel from a pump no less (the bastards).
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ok i have and idear!! Bear with me. Ohm's law states that it takes one volt to push one amp thru one ohm of resistance. More resistors, less flow. Did you check your return circuit? 80% of the fuel going into the ip is for lubrication cooling and to heat the fuel tank. if that is restricted it would back up the whole system like a squirrel in a shower drain (don't ask, please.)
Just an idear.....
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Another good idea, yet I have verified that it is goin through just fine because electric lift pumps are circulating and I can hear/see it come out the return in my veg tank, and I have tried running with returns switched both to veg and diesel, and feeds switched to both veg and diesel side, and every possible combination thereof (running #2 diesel fuel in each tank) The IP has all kinds of fuel all the time, no problems there.
I was wondering if some delivery valves are going bad, if that could be the culprit?? having a hard time seeing how, considering it runs good on veggie, but the hard start/no idle problem has been discussed elsewhere in relation to bad delivery valves..... maybe applies here?? Also, I know I ran watery fuel through. How do I check whether the IP still makes pressure? Should the inj. lines really spray out hard when cracked at the injector? I am really thinking about these delivery valves....