4.3's - 1 will start, other wil not

[themikehyde]

Hello everyone. I went to winterize my 4.3's last weekend. I started with the port side, I warmed it up, changed the oil, restarted, checked for leaks, then ran AF thru it using my 5Gal bucket with muffs. All seemed well. Switched the muffs to the starboard side. Fired it up. Ran for a few minutes, then died. Fired it back up and it cut right off. Will not start, even giving some throttle. When turning on the key, fuel pump seems to run longer than it did on the port engine. Waiting for a second hand to check the spark. Fuel tank is full, oil is full, outdrive fluid is in normal range. My first thoughts are the IAC or the distributor module. Anything else I should check?
Thanks,
Mike

 

[shenanigans]

Hi themikehyde.
Sounds like a fuel delivery problem to me - here's why. If it starts up then cuts out, at least it starts up so it is getting some spark to maintain ingition. While it is only my experience and it may not be generally true, when ignition parts die, they just plain go. Fuel system parts on the other hand, have had them fail partially more times then I can count. The fuel pump running longer than the other side sounds like it is trying to back fill some fuel but then after the engine runs for a bit, it cuts out as it may be starving for fuel. Iinsufficient delivery) Have you checked the fuel filter for that engine yet? I would probably start there. My other guess would be that it might be the fuel pump. Fixed similar problem in past and it turned out it was actually the fuel pump that died. Replaced the fuel pump and voom, off we went.

 

[themikehyde]

Shen,
I turned the knob on the fuel valve clockwise (Over-ride?), fuel started flowing and it starts and runs fine. For some reason, I am not getting any volrage to that valve from IGN. I have looked at all the wiring diagrams, but have not found the valve yet. Luckily aI got all winter.

Thanks,
Mike