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914World.com _ 914World Garage _ What's the best way to test a fuel pump?

Posted by: electrolime Jun 18 2005, 09:26 PM

I need to check to see if the fuel pump is functioning on my 74 1.8. The wiring for it on the car is not there so I just need to test it manually. How do I just test to see if the pump will work? I bought this car as a non running project.

Thanks
-Pat

Posted by: trekkor Jun 18 2005, 09:31 PM

There are two terminals on the pump. + and - .
Run a wire to each with crimp-on connectors and touch to battery terminals.

go, no-go.

KT

Posted by: campbellcj Jun 18 2005, 09:33 PM

Inlet hose in container of gas, outlet hose in empty container, 12VDC to hot lead, negative to ground...

Posted by: ArtechnikA Jun 19 2005, 09:54 AM

at some point you'll also need to know that it an deliver rated pressure; FI cars are very sensitive to fuel pressure.

after you've verified that it starts and runs (no not run it very long dry - like seconds, tops) you'll need to hook up a fuel pressure gauge. use one that goes to 100 psi - good pumps can deliver a LOT of pressure against an infinite restriction.

past that, there's volume delivery data in the manuals.