71' CB350 firing on one cylinder, but is never the same cylinder

[elduderino]

Pulled the wires that lead to the points and cut the bad ends off. I then soldered the connectors onto the wire. I also finished up my regulator rectifier wiring. I'll post a picture later. So far it's firing good on both sides now. I'm almost positive the leads on the points were the issue. I have to go back out now and retest the charging system. Quick question, I was reading on the forum about setting the mixture screws on the carbs. When I unplug one cylinder the bike dies and it doesn't matter which side. Right now I have 105 and 70 jets, just switched to pod style filters. It has 100% more power now, I just want to make sure I'm not running to rich. When I adjust the mixture I can't hear any difference with both cylinders firing. I'm sure I'm close, but I'm trying to get it just right. The right side exhaust seems to have more output than the left, but the right carb seems to have a little lag/bog. Any ideas? Thanks!

 

[legendary_rider]

Do you have vacuum gauges hooked up?

 

[elduderino]

No I don't have any vacuum gages. I did run some numbers on the multimeter. At idle which I have at 1200 rpm I get 12.70-12.90 volts. at 5k I get 13.6. According to the flow chart at 2500 rpm I should have 13.5 or more. Just now I got 13.2 volts at 5k rpm and 12.8 at 2500 rpm. When I checked with my black lead on the + battery terminal and my red lead on the red rectifier terminal I have .03 volts. According to the chart it means I have a bad connection lead from the + battery terminal. I'll go through the wiring tomorrow....... How do I know if it's the stator vs rectifier?

 

[elduderino]

Here is what it looks like now, much, much cleaner. In the second picture that is the regulator right? How can I test the regulator?

 

[elduderino]

Also, can I just run a direct line from the battery to the rectifier and delete the starter solenoid? I don't even have a starter on the bike. Just to confirm this is the solenoid for the starter?

 

[elduderino]

Sounds like it could be time to test the stator.

Dumb question, but how do I test the stator? I am searching for a thread on it now. I think I might have had a few issues, and am slowly working them out. Points connection was one, now I think the stator might be unrelated but another issue.

 

[legendary_rider]

Sorry bud I haven't had to get into wiring yet so I know jack all. I did read though that the rectifier is supposed to be mounted on a rubber base. Or was that regulator? One of them.

Also the adjustment for syncing carbs is very minute I think. Pretty sure you NEED a set of vacuum gauges to sync them properly. Also you have to make sure that your valves are adjusted properly before trying to sync carbs or you'll be doing it for nothing.

 

[elduderino]

My carbs don't have vacuum ports, so I don't think I can use gauges on it. I mounted the rectifier with rubber washers so there is not contact. I don't think I needed to but I did just in case.

 

[legendary_rider]

what carbs are you running? Stock?

 

[elduderino]

stock carbs

 

[elduderino]

Update: as of this morning she is running great. Cold start up, 2 kicks and the choke on, ran and idled perfect. I took it for a spin and rechecked the plugs. I ended up starting with a baseline 2 turns out and needed to go a half a turn in on the mixture screw. That seems to have done the trick. I rechecked the battery and I'm gaining charge, up to 12.8 from 12.5 volts this morning. I think it's just an old honda cb350 charging system.... doesn't charge so great at idle and charges when you ride it. Seeing as how I'm usually 3-5k rpms I think I am going to just ride and see what happens. I'll keep posting updates as to what I find out.