Fuel check valve and the 3port fuel pump |
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Fuel check valve and the 3port fuel pump |
brant |
Sep 10 2016, 07:54 AM
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#1
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914 Wizard Group: Members Posts: 11,632 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I think there must be a check valve built into the 3 port djet pump
I believe mine is not working (Hard starting symptoms) Has anyone pulled theirs apart? Pictures or a thread? I'm also wondering if adding an in line check valve would work? |
John |
Sep 12 2016, 07:30 PM
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#2
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
From what I recall (this is from memory) on the 3 port pumps, if one had the supply line from the tank hooked up correctly and had the other two ports swapped (pressure port from pump "Teed" into the return line to the tank) and the return port from pump feeding the fuel ring, that it might build enough back pressure through the smaller return tube to the tank that the car would eventually start and run. These stock 4-cyl engines really don't consume that much fuel, so I believe that once enough pressure built up, the car might run fine, but I believe it would take time to build enough pressure in the first place.
It can't hurt to check the ports on the pump just to make sure. There is no check valve in the fuel circuit in a stock 4-cyl 914 that I am aware of (just the pressure relief on the 3-port pump). |
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