fuel pump relay
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- Settled in member
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fuel pump relay
Hi i have got a 1992 cbr400 nc29 when i brought the bike it was a non runner and traced it down to a fuel pump relay and got another one off ebay the bike run first time. then i didnt have to bike run for about 3 months whille i striped and rebulit it but the bike still ran fine but then i havent started the bike up for 2 months and now it wont run looks like the same problame as when i am turning the ingtion on you cant hear the fuel pump come on but when i ues a jumper wire arcoss the black and black/blue wire it pumps fuel out when i have the bike striped i could not find anythink wrong with the wireing loom and it all buzzed though ok. anyone had this problame before or know where i can get a new relay with out going to honda as they want £70 just for a relay
- Cammo
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Re: fuel pump relay
swdesigns wrote:anyone had this problame before or know where i can get a new relay with out going to honda as they want £70 just for a relay

It's just a standard auto relay. These can be had very cheaply, but you may need to wire it in.
"It's just a ride" Bill Hicks
- Matchlessman
- Familiar Member
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- Location: Stroud, Glos
Re: fuel pump relay
Does the pump work when the engine is running? They seem to be rev dependent.
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Re: fuel pump relay
Yeah i thought that they was a normal auto relay, am pretty sure that the pump is pumping the fuel when the enigne is running has when i did have it running it didnt jave any issues and when i turn the ingtion on is primes the fuel system by pumping some fuel out thanks for your help