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Old April 20th, 2023, 02:12 AM
kknotts kknotts is offline
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Join Date: Jan 2013
Location: Ellisville Ms
Truck: 1963 GMC Stepside 1000
Age: 62
Posts: 45
Rep Power: 83
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Default Re: Fuel supply loss when in gear

I had a very similar issue with my ‘63 off and on over a several month period. Symptoms started with loss of power as if starving for fuel and finally ended with total shutdown just running through the gears. The diaphragm in the mechanical pump was too weak to supply fuel. Installed an electric unit and it is cured. Has never run better! On a side note I replaced the mechanical pump 3 times over a four year period.
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