E140TXCUA starving for fuel

[SEGAangler]

I just a 1987 140 hp (e140txcua); the VRO has been bypassed. I've got a below deck fuel tank. I put a cheap little inline fuel filter in place just to see if I've got any garbage in the tank and I replaced the fuel lines. When I start it up it seems to run the fuel out of the line faster than it can siphon more into it; eventually shutting off. It does have a primer bulb (new) and it drops at least about half pressure when I see the line emptying. Am I correct in looking at the fuel pump at my first culprit? It appears to be the VRO fuel pump with the VRO bypassed. Is an electric pump blow deck a better option? If so what kind of pressure and/or volume should I be aiming for? I'm attaching a pic of the existing pump. The tank vent is merely a hose; there should be no check valve or anything should there?

 

[boobie]

Re: E140TXCUA starving for fuel

Will it keep running if you pump the primer bulb ??

 

[SEGAangler]

Re: E140TXCUA starving for fuel

No it still cuts off. It actually appears as though pumping the primer pushes fuel back towards the tank. It's a new bulb, it is installed in the correct flow direction, and I've re-checked all my connections to ensure they are tight

 

[racerone]

Re: E140TXCUA starving for fuel

Try a seperate fuel container with a different hose.-----------Borrow one if you must.

 

[SEGAangler]

Re: E140TXCUA starving for fuel

Seperate new topside tank (which works well in my buddy's boat) did not do the trick. I went a step further and pulled the electric fuel pump off my othre boat just to test it that way; that also did not work. As it started to die I choked it and after a few seconds it kicked back up where it should be....run a minute or so then try to die again. If I choke it at just the right time and duration I can keep it running. Am I correct in assuming that this is more than likely a carb issue? I am taking it to get the carbs done regardless as I know the boat has sat for quite some time.

 

[boobie]

Re: E140TXCUA starving for fuel

Good decision.

 

[71Windsor]

Re: E140TXCUA starving for fuel

Sounds like your emptying the carb bowls faster then they can fill. So going for the carb clean is the best decision to make.

 

[SEGAangler]

Re: E140TXCUA starving for fuel

It was the carbs; gunked up bad. New jets....one float stuck. Runs like a top now!