My new carbs are running too lean????
Posted: Wed Jul 11, 2007 1:26 pm
Hi guys,
Finally got a new-er set of carbs for my 93' katana, the donor bike being a 2002 katana. The new set had been sitting for a while, but cleaned up just fine and I did not see any potential problems inside or out. Once I got them, I cleaned them all out carefully, modified the choke and throttle cables to fit on my bike, and slapped them on, making all the necessary adjustments for everything to work correctly.
Whats Happening:
The bike will start up and hold a rough idle, but after 4k RPMs it backfires a big flame out the tailpipe and dies. After some careful checking of the jets and diaphrams and things of the nature, and letting it run for a while to blow out some of the gunk, I still get the same reaction when I rev it up. It's also running very hot, I could even see the tip of the tailpipe getting darker from the heat after about 10 minutes of running (a first for this bike).
The queery:
The bike seems like it's running very lean, but where the adjustment needles were on my old carbs, now there is nothing. When I turn the choke up the bike seems to be able to breath better and will let me rev it a little more. There seems to be no way to tweak these carburetors as far as fuel adjustments. Any ideas as to whats slowing me down here??
Thanks , Sam
Finally got a new-er set of carbs for my 93' katana, the donor bike being a 2002 katana. The new set had been sitting for a while, but cleaned up just fine and I did not see any potential problems inside or out. Once I got them, I cleaned them all out carefully, modified the choke and throttle cables to fit on my bike, and slapped them on, making all the necessary adjustments for everything to work correctly.
Whats Happening:
The bike will start up and hold a rough idle, but after 4k RPMs it backfires a big flame out the tailpipe and dies. After some careful checking of the jets and diaphrams and things of the nature, and letting it run for a while to blow out some of the gunk, I still get the same reaction when I rev it up. It's also running very hot, I could even see the tip of the tailpipe getting darker from the heat after about 10 minutes of running (a first for this bike).
The queery:
The bike seems like it's running very lean, but where the adjustment needles were on my old carbs, now there is nothing. When I turn the choke up the bike seems to be able to breath better and will let me rev it a little more. There seems to be no way to tweak these carburetors as far as fuel adjustments. Any ideas as to whats slowing me down here??
Thanks , Sam