Project Z750 part 26

The next thing I wanted to do was check that the headlights were working.

I got my multi-meter, placed the probes into the headlight sockets (instead of the bulbs) and switched on the ignition.

Nothing.

The Z750 has two front headlights. one is dipped beam and the other is full beam, so I tried the other headlight socket.

yep, you guessed it. nothing.

So I tried each socket again, and pressed the full beam switch and the passing flash switch.

still nothing. bugger.

I went back to the two pairs of alarm wires and tried each combination of joined and separate, but still nothing.

so I made sure that the indicators were still working, and left the headlight whilst I mulled over the problem. At worst I could ride it to the bike shop so that they could fix the headlights (once the forks were back on of course).

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Project Z750 part 27

Well, some good news. the headlights didn't need fixing. they were working all along. My wife helped me diagnose the problem. It was a really tricky one too. She suggested I try the headlights with the engine running, which I knew wasn't going to work as my other bike's headlight comes on when I turn on the ignition, but I thought I'd humour her. So, ignition on and press the starter. Oh crap. nothing. I turn the ignition off and on again (I know it's not a computer, I was listening for the fuel pump) all was quiet. no fuel pump. Here we go again. Tank off again. I feel like I'm going backwards here. I put a battery directly to the fuel pump. whoops, should have put a cloth underneath the fuel hose first. But i don't care about a little spilt fuel. the pump works. So it's the wiring (again). My wife suggested I try the pairs of alarm wires (which again, I knew wouldn't help as they were fine). I wonder if I'll ever learn ...

Project Z750 part 5

As my other bike was going in for service I decided to ask them their opinion on the fuel pump getting gummed up with fuel. they said that it's not common, and that the alarm is normally attached to multiple systems common ones being the fuel pump and the tip over sensor (as well as the kill switch) okay, so the next step is to put power to the fuel pump and see if it works. tank off again, up on the bench and create wires to go straight from a battery to the fuel pump connector. once the wires were ready, I attached the ground lead to the fuel pump connector and (making sure I didn't short the battery) touched the live battery wire to the other connector. viola power direct to the pump, but absolutely no sign of life, no humm, no vibration, nothing. okay, are the wires connecting properly? multi-meter from battery terminal to ground wire connection on tank. yep that connection is fine, no resistance. so switch the multi-meter to volts, ground multi-meter probe to same...

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