Never had a problem on the 12 with the stock lp getting prime... Start pushin the plunger and when ur hand hurts from it start cranking and keep priming it with the plunger until it runs and then giver here some throttle.

yeah me either so far. when I first got the engine in, I just hooked up the new fuel, pumped the plunger til I couldn't no more, then cranked it over and it started right up.

Alright I took the hose off that goes between the prefilter/heater and lift pump. Ran a line from a jug of diesel to the input on the lift pump.

I then cracked the line on top of the fuel filter, primed the crap out of it, and finally it started pulling fuel. At that point I was like, oh yeah!! Tightened up the line I loosened, then primed it about a dozen times more. Cranked it about 5 second, and she started right up.

So now I've at least isolated the problem. I know it's not the lift pump, or anything in the lines from the engine back to the tank. It's somewhere between where the fuel connects to the engine from the tank, to the prefilter/heater, to the lift pump.

I'm gonna replace the line between the prefilter/heater and lift pump, and delete the fuel heater, and hopefully that gets it.

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Alright the fuel heater delete and new line got it. Fired right up!! :jump:

Cleaned out the prefilter while I was in there too, it was pretty nasty.

Thanks for all the help guys. :tu: