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Old 08-02-2013, 07:14 AM   #1
joemama16341
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Default Electric fuel pump

I just swapped to a predator 420cc clone engine. I drilled the valve cover and put a barb in it for the pulse line. I have great pulse through the new fitting but I am not getting much fuel. I can only run wide open for about 20 sec before i empty the fuel filter and have to let it idle to refill. I am thinking about replacing fuel pump with an electric on. The local advanced Auto has an inline electric pump that is 2 - 4 psi is this big enought or am I asking for other problems trying to swap this out. I am looking for advise pls
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Old 08-02-2013, 09:17 AM   #2
geoffw
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Default Re: Electric fuel pump

I just had the same EXACT issue on a customers cart that we built with a stock 440. I tried everything, replaced the engine, replaced the carb, replaced the fuel pump, changed the hoses, etc. It ended up being a bad valve cover!

Boy was I pissed at myself.
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Old 08-02-2013, 10:09 AM   #3
wooly15
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Default Re: Electric fuel pump

just make sure you wire it so that it turns off when you don't have the engine running or it'll puke fuel everywhere.
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Old 08-02-2013, 10:13 AM   #4
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Default Re: Electric fuel pump

I used a fuel pump on a clone once and had to reulate the pressure down to .5 - 1 pound before it would stop overwhelming the float and flooding. Seems these floats are set up for gravity feed pressure.
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Old 08-02-2013, 11:15 AM   #5
joemama16341
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Default Re: Electric fuel pump

ok after pulling everything apart i have great fuel flow idling but full throttle no fuel on two diff fuel pumps. how did u find out it was valve cover? also what about t on elect pump to return excess fuel back to tank
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Old 08-02-2013, 11:37 AM   #6
geoffw
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Default Re: Electric fuel pump

The valve cover has a pcv in it, when it fails, it will bleed off all the vacuum at anything over idle.

They are chinese so they all will break eventually..good thing they are cheap!
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Old 08-02-2013, 12:42 PM   #7
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Default Re: Electric fuel pump

geoffw is the valve cover you sell on your website what i need or is the hardware not included considered the pcv valve? If so i'll just order it from you if thats what you think my problem might be. Thanks for all your help guys
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Old 08-02-2013, 12:45 PM   #8
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Default Re: Electric fuel pump

Yes, thats the one...its worth a try! I cant guarantee thats the issue but it fixed my gremlin.
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Old 08-02-2013, 12:51 PM   #9
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Default Re: Electric fuel pump

i know its no guarantee but you know a heck of a lot more about them than I do. So its worth a shot thank you so much for you knowledge and site sponsorship.
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Old 08-02-2013, 12:59 PM   #10
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Default Re: Electric fuel pump

geoffw whats up with the shipping on your website it says 36 s/h for a 4 dollar valve cover
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