GunterFett

My 98 Superhawk has been giving me some frustrating problems lately.
It starts up and idles fine and will rev up good but, after about 10 mins it
will choke and die. It will start back up but, will not climb over 3000Rpm
without dying again. I tried to ride it to hopefully let the problem work itself out and got to play stall and die. Starts back up but. dies again and again.
I have torn this thing down and back again searching for anything that would cause it. The carbs were just rebuilt and synced to fix the problem and it is still doing it.
It will not do this when the rear ignition coil is unplugged (and yes, that was just replaced as well with a Honda OEM)
I have gone beyond troubleshooting and before I take it Honda to get bent over and raped, I was hoping some of my fellow "Superhawkers" could give me a heads up in this dark time of need.
Was wondering if it was a vacuum problem with the petcock but, everything is hooked up properly.
This thing is a beast and I need to feel that power between my legs soon.
Bwwahahahahaha!
Help me Obi Wan Kenobi (Or whoever) You are my only hope.

8541Hawk

Sounds like the tank vent line is clogged or blocked. The easy way to check is the next time the bike acts up, open the gas cap.

If you hear vacuum being released and the bike starts running normal, it's the vent line.

Also the vent is the small line pointing straight down on the bottom od the tank.

GunterFett

Well... the vent line and vacuum line was fine.
The problem lay in the petcock.
The vacuum diaphragm aperture was clogged with something so,
I took a 3mm drill bit and bored it out and cleaned it really good and
now... she rides like a bat out of Hell.
Have not had any problems and took her out on 95 up to Georgia and back.
Not gonna say how fast I was running due to legal reasons. Bwaahahaha!
(Yes, some may say WTF did you do but, it worked and one can not argue with the results)
Now, I have vacuum and the fuel is flowing again.
Saved me 165 bucks for a new Petcock/Fuel assembly.