I purchased the above vehicle for conversion and at first it didn't start at all due to starter issues. At this point it cranked, but cranked weakly. So I replaced the starter about a month ago and it started fine for about two weeks. Now it just cranks strongly, but doesn't start again. I tried hand pumping the gas with the hand pump on the filter as well as actuating the pump arm on the engine, but no luck.
I've got about 110k miles and 3000 engine hours on it and it is a CAT 3116. Batteries are at about 11.5 Volts (12 Volt system) measured by the onboard voltmeter and are about a year old.
What else could be wrong? Is it the fuel pump/fuel lines? Can something be causing the starter to go bad prematurely? Is the voltage too low? Appreciate the ideas.