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Author Topic: pump prime question  (Read 3032 times)

November 10, 2009, 04:17:54 am

nickzom

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pump prime question
« on: November 10, 2009, 04:17:54 am »
has anyone ever put a check valve or something in the fuel line to prevent it from losing its prime?
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Reply #1November 10, 2009, 05:57:51 am

macka

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Re: pump prime question
« Reply #1 on: November 10, 2009, 05:57:51 am »
yea a nylon golf tee
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Quote from: Vincent Walden
I do know that I drive torque,  while listening to my friends prattle on about horsepower.
Reply #2November 10, 2009, 06:24:09 am

nickzom

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Re: pump prime question
« Reply #2 on: November 10, 2009, 06:24:09 am »
i meant like a one way valve.
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Reply #3November 10, 2009, 06:30:58 am

macka

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Re: pump prime question
« Reply #3 on: November 10, 2009, 06:30:58 am »
IIRC the check valve is way down the fuel line by the water separator. Are you sure its not a soft rubber feed line? Once they go soft, they let in air, especially around the fuel filter.
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Quote from: Vincent Walden
I do know that I drive torque,  while listening to my friends prattle on about horsepower.
Reply #4November 10, 2009, 06:32:42 am

nickzom

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Re: pump prime question
« Reply #4 on: November 10, 2009, 06:32:42 am »
im not having problems, i was just wondering because i am going gas to diesel and wanted to know if i could do that.
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Reply #5November 10, 2009, 07:55:54 am

Rabbit on Roids

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Re: pump prime question
« Reply #5 on: November 10, 2009, 07:55:54 am »
just keep your stock in tank pump. that will keep you primed all the time. they dont put out much pressure, just about enough to help out the injection pump.
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Reply #6November 10, 2009, 08:48:27 am

nickzom

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Re: pump prime question
« Reply #6 on: November 10, 2009, 08:48:27 am »
Quote from: Rabbit on Roids on November 10, 2009, 07:55:54 am
just keep your stock in tank pump. that will keep you primed all the time. they dont put out much pressure, just about enough to help out the injection pump.

thats the problem, my pump died and i am too cheap to buy a new one, plus i ended up getting a engine and trans for free.
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Reply #7November 10, 2009, 09:08:21 am

arb

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Re: pump prime question
« Reply #7 on: November 10, 2009, 09:08:21 am »
Quote from: nickzom on November 10, 2009, 08:48:27 am
Quote from: Rabbit on Roids on November 10, 2009, 07:55:54 am
just keep your stock in tank pump. that will keep you primed all the time. they dont put out much pressure, just about enough to help out the injection pump.

thats the problem, my pump died and i am too cheap to buy a new one, plus i ended up getting a engine and trans for free.

Pull your tank pump and covert it to straight pick-up. You don't need a lift pump on this engine. I added an electronic lift pump (4 - 5 psi) and it worked for a while until something cause it to block enough flow.. so now my converted caravan has just the IP.
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Reply #8November 10, 2009, 09:58:46 am

nickzom

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Re: pump prime question
« Reply #8 on: November 10, 2009, 09:58:46 am »
ok
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Reply #9November 11, 2009, 07:37:31 am

Rabbit on Roids

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Re: pump prime question
« Reply #9 on: November 11, 2009, 07:37:31 am »
you can just leave the pump there if you dont feel like taking it out. just get a primer bulb from an outboard fuel line and plumb it up. my grnadpa has been running one on the jimmy in his boat for years. that thing gets air in the fuel lines like twice a week it seems, and always needs a reprime...
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