1979 351W Mechanical Fuel Pump Replacement

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1989MustangLX 1 I bought a Carter mechanical fuel pump that mounts up right where the stock unit was. It is an OEM replacement. It has the rod on the back like the stock unit. I took the old pump off, removed the old fuel line, and cleaned the sludge out of the area behind the pump. I scraped all the gasket material off the block, applied gasket sealer to both sides of the new gasket, and slipped the rod into the hole in the block. I tilted the rod up to get it over any obstacles, and only needed to press with a little bit of force to get the pump flush with the block. I assume that this is ok, and that the "eccentric" on the cam had the pump arm up a bit? I put oil on the bolts and re-installed them, tightening the bolts by hand and then with a 1/4" ratchet to be sure that I felt any binding. It went together smoothly. Does this sound normal? My uncle mentioned that certain fuel pumps have a rod in the block that you have to re-align with a screwdriver or something, but I thought the Ford units just rested on the cam. Thanks for any ideas, I just want to be sure before I re-install the motor. #1 · Jul 2, 2005 I bought a Carter mechanical fuel pump that mounts up right where the stock unit was. It is an OEM replacement. It has the rod on the back like the stock unit. I took the old pump off, removed the old fuel line, and cleaned the sludge out of the area behind the pump. I scraped all the gasket material off the block, applied gasket sealer to both sides of the new gasket, and slipped the rod into the hole in the block. I tilted the rod up to get it over any obstacles, and only needed to press with a little bit of force to get the pump flush with the block. I assume that this is ok, and that the "eccentric" on the cam had the pump arm up a bit? I put oil on the bolts and re-installed them, tightening the bolts by hand and then with a 1/4" ratchet to be sure that I felt any binding. It went together smoothly. Does this sound normal? My uncle mentioned that certain fuel pumps have a rod in the block that you have to re-align with a screwdriver or something, but I thought the Ford units just rested on the cam. Thanks for any ideas, I just want to be sure before I re-install the motor. Sort by Oldest first Oldest first Newest first Most reactions #2 · Jul 2, 2005 The arm just rides the round eccentric. You may have to turn the motor over before it puts any pressure on the pump arm. Sounds like you got it right tho, did you use any lube on the arm? #3 · Jul 3, 2005 Nope. I had to press down on the pump to get the housing flush with the block, so I assume the eccentric was putting pressure on the arm. Should I have put some oil or something on the arm? #4 · Jul 3, 2005 I think the book calls for some, not sure. I always put a little moly or assembly lube on mine. You should be ok though if you dont want to take it back apart. Insert Quotes Post Reply

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