Re: Fuel pump not priming
Posted: Tue Jun 11, 2019 8:12 am
Yesxstian wrote: ↑Mon Jun 10, 2019 5:26 pmHi thanks for the reply.
I believe understand how the relay works, although there does seem to be a few different ideas on it.
When the bike gets low on fuel, the carb float bowls empty and the bike starts to conk out. Turn the petcock to reserve and the pump fills the float bowls back up and you carry on, usually with out the need to stop. So the pump should be capable of filling the carbs when the engine is running or the starter is engaged, without the need to bypass the relay.
Yep that's correct - It is more down to the design of the pump doesn't like sucking air.
Its a drain
DO NOT BYPASS THE RELAY OTHER THAN TO PRIME THE PUMP.. The design of the pump means it is a bugger to prime when its not got any fuel in. There is no other purpose of the bypass wire than to prime the pump. It is NOT to be done to keep the pump running - just put it on for 3 or 4 seconds & you will here the ticking almost cease. At that time disconnect the Bypass wire & reconnect the harness & carry on.
They didn't - however If the pump doesn't get fuel it ends up sucking air. Once they start sucking air, they are useless & need to be primed. That's what it is.xstian wrote: ↑Mon Jun 10, 2019 5:26 pmI'm not saying bypassing the relay won't work, but I struggle to believe Honda has designed it that way. Would there also not be something in the manual explaining this procedure. The pump has a pressure switch built into it, surely this is to determine when the float bowls are full?
Its not the end of the world, just switch onto reserve at a set distance & you will have no issues.