Kurt
My problem when the engine would crank but not start turned out to be a failed fuel pump. After burning up 3 (!) fuel pumps I eventually found the problem to be a very soft hose the idiot dealer had put between the tank and pump when they installed a replacement fuel tank. Engine would fire with a new pump, then when under load the pump would suck hard enough to collapse the hose, fry, and die. Walked home twice after test runs.
hth Mark

 

Thanks Mark, glad to hear it wasn't your LH or EZK. I'm going to focus on the fuel pump cicuits first.

 

if the pump was sucking the hose shut then you ought to open the sender up and inspect the fuel strainer from above,
it would indicate from your info that is it plugged

 

Maybe but I don't think so. After the hose was replaced no more issues for these several years.
Mark