Yamaha TRX850 Enthusiasts Forum

Has anyone had a problem with fuel pump leaking fuel into vacuum pipe, and filling the inlet manifold with petrol when stood for two day's or more, I have put new fuel tap on because that was leaking but the problem is still there, pipe's are connected correctly, I think it's the pump but I could do with second opinion before I buy a new pump.

sounds like the pump diaphragm is split. this will allow fuel down the vacuum line.

i may have a spare in the garage.

Thanks for your help, I suspected that was the problem, that has confirmed my suspicions.thanks again for your help.
I will order a new one from fowlers