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F Head Fuel Pump Question
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Oilleaker1 View Drop Down
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Joined: 06 Sep. 2011
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    Posted: 19 Sep. 2014 at 12:44pm
My '53 Jeep pickup with the 134 Fhead has the double acting fuel/vacuum pump. It came with no spacer behind the pump where it bolts up to the block. The M38A1 had a thick spacer, the single acting upper fuel pump only had no spacer. The question is: should my civi double acting fuel pump have the thinner steel spacer and two gaskets behind it????????? It's on and working now with no spacer, but it was tough to get it on. John
Green Disease, Jeeps, Old Iron!
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Bob3b View Drop Down
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Points: 3097 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bob3b Quote  Post ReplyReply Direct Link To This Post Posted: 19 Sep. 2014 at 1:16pm
It depends on which fuel pump you have. Oldtime both here and over on the 3b page has some good info on that. Here is a tech page from the 3b page discussing it.

Fuel Pump
1946 CJ2A #23881
1953 CJ3b, nice!
1949 Jeepster
1947 Empire Model 90
1985 CJ10A
Spen "S" Utility trailer
Kubota l3400
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rocketeer View Drop Down
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Points: 3473 		Post Options Post Options   Thanks (0) Thanks(0)   Quote rocketeer Quote  Post ReplyReply Direct Link To This Post Posted: 28 Sep. 2014 at 3:12am
Short answer, dual action (fuel+vacuum) - yes, single action (fuel only) - no.
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Oilleaker1 View Drop Down
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Points: 4411 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Oilleaker1 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Sep. 2014 at 3:06am
Thanks for the replies! Looks like I'm going to install a spacer soon. I wondered why it was tough to install. It was also warped at the gasket surface. It may also help with too high a fuel pressure and hard starting when warm. John
Green Disease, Jeeps, Old Iron!
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