2000 Mazda 121 Won't Start

2000 MAZDA 121

75,000 MILES

VK4UN

MEMBER
1 POST

The cars winds over but doesn't start, There is plenty of spark, so it is a fuel problem, the fuel filter is fine so i am suspect about the fuel pump

I have folded the back seats up and removed the floor carpet to get access to the fuel pump on top of the fuel tank
My question is should you be able to hear the fuel pump when the ingition is turned on or does fuel pump only start when you wind the motor over

Look forward to hearing you answer

Regards

David Wilson

Nov 9, 2013 at 3:10 AM

HMAC300

✓ASE Certified Mechanic
48,601 POSTS

If you turn the key on you should hear the pump activate. check fuse and relay first though then if it doesn't start check to see if pump is getting power.

Herse a guide on how to test the relay

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

Relay location is attached below

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Nov 9, 2013 at 5:40 AM

WRENCHTECH

✓ASE Certified Mechanic
20,761 POSTS

It will activate when the key is first turned on but only for 2 seconds and then it shuts down until it sees the engine cranking. You won't see any power if you just leave the key on.

Nov 9, 2013 at 6:10 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.