Hi Folks,
New member and first time poster here.
I have searched around through various forums for some ideas on the issue my bike is having. I've also posted up on "CBR Forum" just to cover my bases.
The bike is a 2001 F4i with only 13,000 km on the clock.
Two owners, me being the second.
Full service history and completely standard.
Australian delivered vehicle.
The issue I have is that when turning the bike key on and the kill switch on the fuel pump will prime but doesn't shut off after a few seconds as it should. It continuously runs.
The bike has done this since I bought it and when first riding the bike I thought it was over fuelling because I would get occasional black smoke out of the exhaust and a bit of exhaust backfiring on overrun.
One morning the bike refused to start completely.
After my initial research I changed the fuel pressure regulator for a brand new Honda Genuine one along with the O ring and a put in a fresh set of plugs because the old ones were fouled.
Bike now starts again but fuel pump still continues to constantly prime.
I've since checked the Fuel Cut Relay, Engine Cut Relay and bank angle sensor. All work as they should with correct continuity with 12v applied and removed. The fuel pump wiring (nor any other wiring on the bike for that matter) has been tempered with. It is 100% stock.
I plan to pull the vacuum hose tonight to see if there is any fuel in the line. I don't believe it is a stuck injector because the bike doesn't run poorly.
Can anybody suggest any other places where the system may be failing?
I've also jumped the Fi diagnostic plug but there were no fault codes. I'm at a loss now.
Any help appreciated.
Thanks.