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Re: How to Test Fuel Pump?
Posted by Al. W. (more from Al. W.) on Tue, 10 Apr 2001 14:58:56
In Reply to: How to Test Fuel Pump?, Christian, Tue, 10 Apr 2001 12:21:33
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Christian,
I just replaced the pump on my 88-900Base.
The way I diagnosed it was to diconnect the fuel line at the fuel rail and then have someone crank the engine while you watch to see if fuel comes flowing out.
If you have fuel rushing out it obviously isn't the pump.
If there is not any fuel then start tracing backwards.
Is there fuel coming into the filter?
Does the fuel pump make noise when you try to start it?
Also, how much fuel is in the tank. The pump on your car has a primary pump attached to it that helps the main pump when the gas is low.
A new pump is approx. $ 200.00 for the DIYer, and a used one runs about $ 100.00. Please remember if you buy a new one to also get the fuel pump check valve. The old pump most likely had it built in, where as the replacements do not.
Good Luck, Al. W.
89-900S, 88-900Base, 86-900T
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