Dripping Fuel: CB750
The Nighthawk doesn’t get ridden much, so I’ve decided that it needs a Battery Tender on it. It does have a little Stabil added to the tank because I know it sits. Before I got to the install, I got up the nerve to take my 5-yo for his first ride on the road. I had him get into his racing leathers while I pulled the bike out of the garage.
I turned on the choke and thumbed the start button and it turned over like a fresh battery should. But it wouldn’t start. Doh! Forgot to turn on the fuel selector, carbureted bike.
Did that and thumbed the starter again while I played with the choke setting to get it to catch. I noticed that it was dripping fuel from all 4 carbs like a sieve even while running. I turned off the fuel valve thinking maybe the floats were full from my failed start creating high vacuum. It continued to run. I let the bike warm in the OFF position and the dripping slowed. Turning the knob to RES also gave a fuel loss. But turning it off gave just a slow drip.
I decided (I hoped) we weren’t going to be the subject of a “never again” story with a bike catching fire as it seemed standing the bike vertical had a positive effect.
I turned on the fuel and away we went. I took a glance a couple times enroute and it seemed cured. About 20 minutes of running the bike through various speeds, gears, loads and RPM we returned with a lot of elation and gratitude from my son! He came over and hugged and thanked me for taking him riding.
Back home I noticed that parked, the engine will continue to run longer than I think reasonable with the selector in OFF.
1- Is this leaking something that I need to correct or a faculty of an incorrect starting procedure?
2- What’s the best way to clean the fuel residue from the bike?
3- Do I need to look at the selector valve?
-My 06 Fireblade
-Her 02 CBR600F4i Custom Suspension
-My 07 CRF230F sold
-My 97 XR100
-07 CRF50F son's
-92 CB750 She lets me ride it, Jetted
-13 CRF110F, 01XR50 Daughter's
Because 12,000 RPM makes me feel better