Author Topic: 350F running rich?  (Read 951 times)

0 Members and 1 Guest are viewing this topic.

Offline Jay B

  • Expert
  • ****
  • Posts: 763
350F running rich?
« on: November 24, 2005, 09:56:09 AM »
I've been working in my 350F project bike. I put in a set of rings and gaskets last weekend and finally got the carbs cleaned and rebuilt using kits from Old Bike Barn. I've put only about 20 miles on it since. My problem- I seem to be getting white smoke out of the exhaust. It runs great. The jets in the kit were stock, a 35 low speed and I think a 105 main. I cleaned and re-used the stock needles, I didn't like the looks of the kit ones, they didn't seem to have the same profile. The plugs look a little sooty and a touch wet. I dunno, maybe the rings just aren't seated and it's burning a bit of oil, but the smoke looks whiter than that to me. I haven't done a compression check yet with that few miles. I've got the stock airbox on with a crappy set of 4 into two's. Oh yeah, I'm running the pilot screws 2-3 turns out depending on the cylinder. Anyone got any ideas??
Jay
'77 CB550K
'74 CB350F cafe
2001 Road King
'73 CB175

Offline Jay B

  • Expert
  • ****
  • Posts: 763
Re: 350F running rich?
« Reply #1 on: November 25, 2005, 05:47:13 AM »
I'm resurecting this bike, it hadn't run in a long time. I hadn't started it, but it had low compression in two cylinders, stuck rings. I figured if I had it apart I'd replace them. The bike has about 13k miles.
Jay
'77 CB550K
'74 CB350F cafe
2001 Road King
'73 CB175

Offline schneider419

  • Enthusiast
  • **
  • Posts: 104
Re: 350F running rich?
« Reply #2 on: November 27, 2005, 06:21:38 AM »
this is a good question, my 350f started to do this at the end of the season too! my guess is valve seals?, or are we trying to make a simple fix too complex.