Author Topic: smoke coming out of the air side of carbs while syncing.  (Read 3442 times)

0 Members and 1 Guest are viewing this topic.

Offline asom

  • Enthusiast
  • **
  • Posts: 178
Re: smoke coming out of the air side of carbs while syncing.
« Reply #25 on: April 24, 2010, 07:05:48 AM »
would that be the needles?  they are pretty good.  slightly indented but the seem to seal up fine.  I do weep fuel occasionally but nothing to severe.
in case I forgot, it's a 78' CB750F

Bloody knuckles and all...

Offline Nikkisixx

  • Expert
  • ****
  • Posts: 839
Re: smoke coming out of the air side of carbs while syncing.
« Reply #26 on: April 24, 2010, 03:57:46 PM »
So I stopped by Scot's today to turn some wrenches with him.  In exchange for some darn good beef ribs we:
1. Adjusted the cam chain
2. Adjusted the valves
3. Static set the points and timing
4. Checked the plugs, gap and condition.  They were a little sooty but that is to be expected for a bike that has been doing a lot of idle time
5. Checked the plug boots -all tested about 5K ohms.
6.  Niped a smidge off the wire ends to assure good contact and screwed the caps on
7. Tested the carb float setting using a clear tube - all okay
8. Fired it up and dialed in the sync - all now set within 5hg
9. Dynamic set the timing and dwell
10. Tried to set the air mix screws - didn't have my stubby flat head that is dedicated to this job with me.  I think these still need a touch-up
11. Refilled the battery with distilled water and gave it a charge - still could use a few more amps.  He got a new battery but is waiting to see if the old one comes back to full charge.  Fingers crossed.
Bikes revs great and idles well -- at 2000 rpms.  Drop the idle to 1200 and she purrs for about 2 seconds.  Then she stumbles and falls.  I think it may be the weak battery, dirty idle jets, or bad airmix setting (effing screws are hard to get to on a hot motor  >:( )
I suspect the air mix because even when warm, she likes a little choke to start and idles okay with some choke.  I suspect the battery because it was half dead, and the charging system really only comes on at 25000, about where she like to idle.   

My wife called and said the sex started at 7:00 weather I was there or not.  I left Scott's quickly and am finishing this post just in time   ;D  I think with a few more beers minutes work she'll be good to go - the bike that is...
It is a proven fact that modifying a SOHC Honda in any way will bring on the apocalypse.

Offline asom

  • Enthusiast
  • **
  • Posts: 178
Re: smoke coming out of the air side of carbs while syncing.
« Reply #27 on: April 25, 2010, 10:26:16 AM »
glad you made it in time!  I would have felt real bad.  Looks like there are going to several good riding hours this afternoon.  only 10% chance, partly cloudy, 75-79f about 2-7pm!  Battery is good, fires right up still needs choke, but it's not warmed up yet.  It will ride, I PROMISE.  ;D
in case I forgot, it's a 78' CB750F

Bloody knuckles and all...

Offline Nikkisixx

  • Expert
  • ****
  • Posts: 839
Re: smoke coming out of the air side of carbs while syncing.
« Reply #28 on: April 25, 2010, 11:09:25 AM »
I can't believe you didn't ride it yesterday, in the rain, with a dead battery, with the idle set at 2000 rpms.  ;D ;D 
It is a proven fact that modifying a SOHC Honda in any way will bring on the apocalypse.

Offline asom

  • Enthusiast
  • **
  • Posts: 178
Re: smoke coming out of the air side of carbs while syncing.
« Reply #29 on: May 16, 2010, 07:05:32 PM »

10. Tried to set the air mix screws - didn't have my stubby flat head that is dedicated to this job with me.  I think these still need a touch-up


what should I do here Nikkisixx...
in case I forgot, it's a 78' CB750F

Bloody knuckles and all...