1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

12A - No fuel from fuel pump

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Old Apr 8, 2017 | 01:18 PM
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12A - No fuel from fuel pump

Engine not starting, so I check the fuel lines. No fuel to the carb when cranking the engine. Ran a 12 volt line directly to the fuel pump from the battery. Got fuel at the carb. The car started up and ran fine. Re-connected the wiring harness and there's not fuel to the carb again. So, I'm not getting 12v through the wiring harness to the fuel pump. I can see on the schematic that the fuel pump gets its positive through the fuel pump cut relay. That's the end of my knowledge. What is the function of the fuel pump cut relay? Ideas on what I should be checking next?

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Old Apr 8, 2017 | 02:47 PM
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The relay plug can be removed and a couple of the blades jumped. The relay is about $50 so most owners just jumper. It's part of a safety device.
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Old Apr 8, 2017 | 04:09 PM
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KansasCityREPU, I just found a thread where you were discussing the blades in the connector to jump. I'll give that a try.

Last edited by 93 RX-7; Apr 8, 2017 at 04:20 PM.
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