cheep fuel pump. |
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Chicodave
Member Joined: 13 May 2019 Location: Chico, Tx Status: Offline Points: 96 |
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Posted: 27 Sep. 2021 at 11:34pm |
I replaced my fhead fuel pump which is about a year old. It had a broken pump arm. I begin thinking, am I causing this because I don't have the spacer block installed? Is it necessary? Thanks in advanced.
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1949 CJ3a "Crap Game"
1951 Willys Truck 1950 Studebaker 2R5 1952 Chevy 3100 5 window |
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Skid Mark
Member Joined: 17 June 2021 Location: MA Status: Offline Points: 38 |
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Noob here but I think you need to check the fuel pressure as that spacer adjusts the pressure output. Different carbs have different pressure requirements. If you have a pressure regulator you could still be working the pump harder than necessary.
I'd rig up a temporary rubber fuel hose with 1/8" NPT fittings for pressure testing. I'm about to swap the original dual action fuel pump out on my F head for a cheap new dual action fuel pump until I can get the original rebuilt. (My vacuum diaphragm is dead) One thing I notice though is the new fuel pump lever arm takes about 5 times the amount of force to move. I'm going to try and oil it and work it but that has me a bit concerned about potential cam wear. I'll report back with what I find pressure wise with the new dual action pump but my original pump does not have a spacer. Of course your results may differ.
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Rus Curtis
Member Joined: 25 Mar. 2010 Location: Alabama Status: Offline Points: 1733 |
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Good info on the spacer here:
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Rus Curtis
Alabama 1954 CJ3B Bantam T3-C |
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Chicodave
Member Joined: 13 May 2019 Location: Chico, Tx Status: Offline Points: 96 |
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That link has the info I need. Thank you.
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1949 CJ3a "Crap Game"
1951 Willys Truck 1950 Studebaker 2R5 1952 Chevy 3100 5 window |
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