Repeated fuel pump failure of zx7r
I have 2000 zx-7r.
In short :
What is cause of repeated fuel pump failure of zx7r?
Is there anyone who had experienced similar trouble?
2 years ago, the engine had stopped after RPM went down while I was riding it.
Fuel was enough but I couldn't turn it on again, so I had to move it to the maintenance shop by truck.
Unfortunately, the engineer didn't know about old Kawasaki models, even he insisted that there was no fuel pump on zx7r.
But I have a friend who is 7r mania and expert, he advised me to check fuel pump whether it was OK or dead.
Thanks to him, I fixed my 7r.
I couldn't buy a genuine fuel pump of Bosch through Kawasaki, my friend got me a compatible fuel pump instead of a genuine.
I ride it a few K kilometer, maybe 1000~2000km until last Mar, and it stopped again through suffering very similar symptoms.
I tested fuel pump, and figured out that it became out of order.
When you connect a fuel pump to 12V battery directly,
Normal one : makes sounds "TARARARARARARA..."
Broken one : makes sounds "Tik"
The riding distance after last fuel pump changing was only a few K kilometers.
Anyway, I knew the pump failuer, I ordered compatible fuel pump again with few start motor relay, a fuel pump relay, too, through Ebay.
And I exchanged those 3 parts at once.
After changing those parts, my 7R run well, I rode my motorcycle to go to work yesterday morning. It was only 15 kilometers.
And last evening, when I rode it to go home, my 7R went down again! The cause was same. it was the fuel pump fail.
I still have one more extra fuel pump, but I don't think I should exchange it right now.
I guess there must be some basic electric problems, and i think I should fix it before I put a new fuel pump on it again.
1st fuel pump failuer was after almost 5K kilometer's riding.
2nd fuel pump failuer was after 1~2K kilometer's riding.
3rd fuel pump failur was after only 15 kilometer's riding.
Before last failuer, I added some flashing LED light on it's tale lamp. That's all what I did something on it.
Than flashing light doesn't even consume much electricity. it uses only few watts.
My expert friend said any additional electric equipment is not good on old motorcycle, especially 7R, so remove flashing led light first before looking for how to fix it.
I'm not sure whether it caused the trouble.
Thank you for reading.