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Old October 6th, 2016, 02:24 AM
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TJ's GMC TJ's GMC is offline
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Join Date: Mar 2015
Location: Cave Junction, Oregon
Truck: 1964 GMC 1500 LWB Wideside 305E V6.
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Default Re: The saga continues - Sputtering, loss of power when accelerating

Disconnect the battery and jerk that ol pump out. Be sure to disconnect the line from the sending unit. Look into the ports and see if there is any crap. If there Isn't then check all the lines. Pull the sending unit out and check it, make sure there is a screen at the end. Also look into the tank while there. Then remove the line from the carb and pull the filter and blow compressed air through that line into a jug at the other end to see if any crap comes out. If so...there's your problem and check that filter as well. If there Isn't any crap in the line...replace the pump, filters, and all old rubber line. I'd do a double filter system with a filter behind and in front of the pump. Super cheap insurance and can save the pump. Saved mine, but I went with a new one anyway. Good pump if you end up needing one would be a Carter 50 GPH. Puts out around 4.5 to 8 PSI. USA made.
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"Excuse the rust I use my truck"
1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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1964 Chevy C20 292/SM420
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