Re: Fuel Pump Rebuild

Posted by Jim Kavanagh On 2017/5/12 21:51:06

Thanks Howard,

I do get one side of the pump with suction and the other with a very small amount of pressure. With the pump attached as suggested, upon accelerating, after dropping, my vacuum guage shows about 26 lbs, going down slowly to about 22.5. When I bypass the pump, upon accelerating, it drops quickly then returns immediately to 22.5. In both instances I am using the wiper line to attach my vacuum guage, so it should not be a variable. It does not seem like anything is different between the two tests except the pump itself. I wonder if reversing the valve would cause a vacuum leak n the pump.