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Engine cranks but does not start after replacing the fuel pump?

Tiny
JIM.RAMAGE57
  • MEMBER
  • 1989 MAZDA B2600
  • 2.6L
  • 4 CYL
  • 4WD
  • MANUAL
  • 160,000 MILES
Replaced the fuel pump. And now it won't start? It is getting fire to the spark plugs. But the plugs don't seem wet. Like no fuel getting to them. It cranks over but won't start. Used starter fluid and all but no start.
Wednesday, April 12th, 2023 AT 7:35 AM

1 Reply

Tiny
BORIS K
  • MECHANIC
  • 763 POSTS
Hello,

Can you hear the fuel pump turn on when you switch the ignition on?

The fuel pump is energized by the circuit opening relay, located behind the left kick panel.
A good description in image 1.

How to test relay:
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Pin out for the fuel pump connector and wiring schematics are below in image 2+3

Hope this helps.

Cheers, Boris
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Thursday, April 13th, 2023 AT 8:30 AM

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