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How do you tell if fuel pump relay is out on 300zx?

There are a few ways to tell if the fuel pump relay is out on a 300ZX.

1. Check the fuel pump fuse. The fuel pump fuse is located in the fuse box under the dash. If the fuse is blown, it means that the fuel pump relay is not receiving power.

2. Check the fuel pump relay. The fuel pump relay is located in the relay box under the hood. To check the relay, you can use a multimeter to test for continuity between the terminals. If there is no continuity, it means that the relay is faulty.

3. Listen for the fuel pump. When you turn the key to the "ON" position, you should be able to hear the fuel pump running. If you don't hear the fuel pump running, it means that the relay is not switching on the power to the pump.

If you suspect that the fuel pump relay is out, you should have it tested by a qualified mechanic. If the relay is faulty, it will need to be replaced.