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Yamaha 1987 FZX 750 fuel pump problem. I have new fuel pump and fuel pump relay but the pump is still not working. The pump worked for a short while but then it stopped before even all carburators were filled with gas. How is the pump working from where comes the signal to work what could be the problem....
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chec electrical 1st its the weakest link--batt may not be at 12.6v-needed for a coil ign--corrosion/connections cud be bad like a ground-plugs-cables-ignition module may be worn---u need a fuel pressure test to confirm a bad pump--getta repair manual or library has troublshootn guides
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