Author Topic: Smokey smokey smoke.  (Read 3746 times)

0 Members and 1 Guest are viewing this topic.

Offline w1sa

  • Hot Shot
  • ***
  • Posts: 444
Re: Smokey smokey smoke.
« Reply #25 on: May 01, 2013, 06:09:55 PM »
From what's been described so far, my first thoughts are dirty pilot/idle circuit.......I probably missed it, but did you thoroughly inspect and clean the carbs ??....beyond that, the next thing I'd consider is poor spark.

Offline Reganator

  • Enthusiast
  • **
  • Posts: 215
  • Just another guy with a CB750 kinda cafe.
Re: Smokey smokey smoke.
« Reply #26 on: May 01, 2013, 06:51:42 PM »
Seems like I'm on the rich side now, and I cleaned all of that very very well when I pulled the carbs a week ago.  Check out the pics and vids in my new thread and tell me what you think w1sa, I believe I'm moving in the right direction.
Frankenbike CB750: 
71 K1 Frame
72 K2 Engine
75 F0 Carbs:
     #40 slow jets
     #105 Main Jets
     Stock needle and settings.
My-neighbors-love-me-Kerker 4 into 1
Stock airbox

The best way to make a small fortune on the stock market is to start out with a large fortune.  Trust me, I'm an actuary.

Offline trueblue

  • A person who has had many interesting experiences, some of which are true, is known as an
  • Old Timer
  • ******
  • Posts: 3,124
Re: Smokey smokey smoke.
« Reply #27 on: May 02, 2013, 03:36:49 AM »
When you cleaned the carbs did you clean the emulsion tubes?  If these are clogged it will run rich ;D
1979 CB650Z
Nothing can be idiot proofed, the world keeps producing better idiots.
Electronic Guages for your SOHC 4

Offline Reganator

  • Enthusiast
  • **
  • Posts: 215
  • Just another guy with a CB750 kinda cafe.
Re: Smokey smokey smoke.
« Reply #28 on: May 02, 2013, 06:39:53 AM »
Yup, I cleaned everything in and outside the carbs.  Ran copper wire through the little holes and passages to make sure they were clear, soaked everything.  I'm convinced it's more a tuning issue than a carb issue in general at this point.  I may also have a bad valve seal on one of my cylinders that isn't helping things.
Frankenbike CB750: 
71 K1 Frame
72 K2 Engine
75 F0 Carbs:
     #40 slow jets
     #105 Main Jets
     Stock needle and settings.
My-neighbors-love-me-Kerker 4 into 1
Stock airbox

The best way to make a small fortune on the stock market is to start out with a large fortune.  Trust me, I'm an actuary.