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Author Topic: CB210T "Stuttering" problem  (Read 881 times)

Offline interceptor

  • Posts: 865
Re: CB210T "Stuttering" problem
« Reply #10 on: May 06, 2017, 13:16:31 »
Did you install new points?  The reason I ask is that I did that one time, and I seem to remember this happening to me.  I think there was a very small nylon washer I didn't install, or installed improperly, so it was grounding out all the time?  Something like that.  Good luck :)
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Offline Sonreir

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Re: CB210T "Stuttering" problem
« Reply #11 on: May 09, 2017, 14:08:39 »
Did you install new points?  The reason I ask is that I did that one time, and I seem to remember this happening to me.  I think there was a very small nylon washer I didn't install, or installed improperly, so it was grounding out all the time?  Something like that.  Good luck :)

Been there, done that. It's sort of a rite of passage. ;D
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1976 Puch Maxi - APuchalypse Now
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Offline Camaromuscle

  • Posts: 15
Re: CB210T "Stuttering" problem
« Reply #12 on: May 09, 2017, 17:16:48 »
How should i check this? The points were brand new and was complete like this:
http://www.wemoto.com/parts/picture/hl-181183/

Offline Sonreir

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Re: CB210T "Stuttering" problem
« Reply #13 on: May 09, 2017, 17:34:40 »
Rotate the crankshaft until the points are open. Using a multimeter, test the resistance between the two sides of the points. You should get an Open Line.

Next, measure the resistance between the stationary side of the points and ground. You should get a reading very close to zero Ohms.
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

1977 Honda CJ360 - Café SOS - Stage One™, Café SOS - Stage Two™
1976 Puch Maxi - APuchalypse Now
Suzi T500 Cobra Resto

Custom Gauge Graphics
Custom Wiring Harnesses

DTT Red, White, and/or Black 360 Club - Better than those Blue guys

Offline Camaromuscle

  • Posts: 15
Re: CB210T "Stuttering" problem
« Reply #14 on: May 13, 2017, 08:22:29 »
Hi, i measure 5,3 ohms between the points when they are open, and from stationary to ground 0,2 ohms.

I have a battery eliminator and rectifier from oregon motorcycleparts installed. Maybe it should be like this with this kit?

The spark is weak with the eliminator kit, but with a battery it is good.

I do not think the battery eliminator is broken, but maybe my stator is not good enough. This was originally a 6v bike, and i have changed everything to 12v, but the stator is original.
I rode the bike last year with this setup and no problems, the stator could output more than 12v.

Offline Sonreir

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Re: CB210T "Stuttering" problem
« Reply #15 on: May 13, 2017, 15:38:23 »
You have a combination of problems, it seems.

You should not be able to get a reading between the points when they're open, so that's problem number one.
Problem number two is the battery eliminator. They rarely work on the Honda twins since the alternator is so anemic.
Sparck Moto - http://www.sparckmoto.com

Audaces fortuna iuvat.

1977 Honda CJ360 - Café SOS - Stage One™, Café SOS - Stage Two™
1976 Puch Maxi - APuchalypse Now
Suzi T500 Cobra Resto

Custom Gauge Graphics
Custom Wiring Harnesses

DTT Red, White, and/or Black 360 Club - Better than those Blue guys

Offline Camaromuscle

  • Posts: 15
Re: CB210T "Stuttering" problem
« Reply #16 on: Jul 31, 2017, 13:00:07 »
I still have the same problem, and i will take the bike out for a test ride tomorrow to troubleshoot the problem.
Things i am going to check:

- plug chop when the bike stutters
- try riding without the air filters
- try riding with choke on

The carbs are synced, ignition is timed correctly (just stationary), valves are set, the ignition colour is checked with colortune and the colour of the combustion is ok. I have recently changed to oko flatslide carbs, still the same problem.

What else should i check?
The main keyword i think in this troubleshooting is that it is ok when cold, but gets worse the warmer the engine gets?

I may also try to bypass the condenser/battery eliminator tomorrow with a battery, just to check if the battery eliminator is not giving a good enough spark.

Offline teazer

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Re: CB210T "Stuttering" problem
« Reply #17 on: Jul 31, 2017, 13:26:55 »
If it gets worse when it heats up, the jets are too big - it's rich.

With points open there should be zero connectivity.  Is it possible that the condenser is wired to the stationary point instead of the moving one?  That's one of many common mistakes when replacing points.  There is a correct sequence to assembly.

A stock small carb on a larger motor will usually go rich because the pressure drop across the jets is much higher, so you may need stock or smaller main jets. It's also possible that the needle taper is now wrong for your motor, but one thing at a time. Get the ignition right first.

Yu might also want to check plug caps for resistance.  They deteriorate.

Offline Camaromuscle

  • Posts: 15
Re: CB210T "Stuttering" problem
« Reply #18 on: Jul 31, 2017, 13:47:39 »
Hi teazer and thank you for your answer.

Since the bike stutters at 3/4 throttle i will try to drop the needles before my testride tomorrow to lean it out.

I think the points measurement problem from earlier in this thread was just my blunder, i did get to measure the points eventually. I have never touched the condenser for the ignition and i believe it is wired correctly, i will recheck it though.

I bought the oko carb from midatlantic trails, the guy who works there is really helpfull with all troubleshooting and he reccomended the 26mm carbs for my bike, (26mm was installed originally as well).
I can try smaller jets, but maybe drop the needle first?

The plug caps are new (bought new coils, wires and ngk plug caps with resistors last year.)
But the caps can be bad or fake ngk? I have a set of  ew red ngk caps that i can try.