88 vert - replacing fuel pump - drop tank?
Thread Starter
Racer
Joined: Apr 2011
Posts: 296
Likes: 1
From: Tipp City Ohio
Both fuel lines run under the passenger side frame rail. The pressure side is the larger of the two, and the return line is the smaller. Any place where there is rubber hose will work....the closer to the fuel rail, the better....or faster it will react. You could just pinch it off at the filler neck as well...would just take slightly longer to react. When your pressure drops, pinch off the return line and see if it rises. If it does (which I doubt) the regulator is faulty. I don't think this is your issue, but I hate replacing parts (and doing work) until I'm sure what's at fault.
And yes, sustained low voltage will overheat and kill a fuel pump. Same thing that happens in home appliances.....say the power company experiences a serious voltage drop....it can damage air conditioners, refrigerators, any high load motor driven item.
The pulsator is just a piece of hose between the fuel pump and the hard metal fuel line assembly on the sending unit. Replace it with a section of FUEL INJECTION hose of the same diameter.
Your fuel pump is operating fine cold, but once it heats up (heat = electrical resistance) it starts to malfunction. I've seen several behave exactly like this.
And yes, sustained low voltage will overheat and kill a fuel pump. Same thing that happens in home appliances.....say the power company experiences a serious voltage drop....it can damage air conditioners, refrigerators, any high load motor driven item.
The pulsator is just a piece of hose between the fuel pump and the hard metal fuel line assembly on the sending unit. Replace it with a section of FUEL INJECTION hose of the same diameter.
Your fuel pump is operating fine cold, but once it heats up (heat = electrical resistance) it starts to malfunction. I've seen several behave exactly like this.
Love a happy ending. 
Intermediate
Joined: Aug 2015
Posts: 38
Likes: 3
I am so glad to hear that...the frickin Chilton's manual has me taking the tank out to get to it. Unreal!
Though I have decent pressure while sitting still, once it warms up and I get moving, it bogs down and my pressure drops. My father in law says he replaced the pump and filter but I'm skeptical it was done correctly.
Any insight to how it "done incorrectly" can cause stumble on acceleration?
Thanks again!
Though I have decent pressure while sitting still, once it warms up and I get moving, it bogs down and my pressure drops. My father in law says he replaced the pump and filter but I'm skeptical it was done correctly.
Any insight to how it "done incorrectly" can cause stumble on acceleration?
Thanks again!
Safety Car
Joined: Nov 2009
Posts: 3,973
Likes: 341
From: Adelaide South Australia
If you have an extra heavy workshop door can you tape the Chilton and Haynes together ??
