kohler 8hp fuel pump question

[bean 85]

I have a '73 8hp 4 speed that has a vaccum fuel pump. it has a bad diaphram, so I bypassed it and hooked the fuel line directly to the carb. it is a gravity feed now and works well, as long as you keep the tank over 1/4 full. i have a mechanical pump that I put on today and it wouldn't even fire. it is pumping really well. I put it back to gravity feed and it fired right up.anyone ever experience this before?

[Kelly 1,033]

Did you hook the lines up on the right sides of the pump?, you say its pumping well, is that on the engine using the starter?

[bean 85]

yeah, lines are on right. when turning over with starter, it shoots out gas pretty well. certainly enough to keep the bowl full. may be an air gap or something.. it was just making me scratch my head.

[buckrancher 2,694]

check and see if there is a piece of crap inside the fitting before the inlet needle on the carb

pressure from the mechcanial pump could be forceing it over the in the hole over the inlet needle and stopping the flow were the gravity

feed does not

Brian

[bean 85]

check and see if there is a piece of crap inside the fitting before the inlet needle on the carb

I will do that. it is a tractor that sit for a whike and I had to clean the fuel bowl a few times, but haven't actually properly cleaned the carb. it runs great, though

[tunahead72 2,546]

favoritemodel:

elle macpherson

THAT'S FUNNY! :handgestures-thumbup:

[JC 1965 1,532]

favoritemodel:

elle macpherson

THAT'S FUNNY!

That is funny! I didn't notice it until I read your post. :thumbs2: