SOHC.co.uk Forums > SOHC Singles & Twins
CB200 carb issues
Johnwebley:
--- Quote from: K2-K6 on March 10, 2023, 11:52:34 AM ---Advance mech check out ? Can you see it advancing with a strobe ?
--- End quote ---
it seems strong at 5k,as the advance comes in around 2.5k it should be OK,but might be worth trying,
also same with and without air filters, those have been replaced with extremely costly NOS
just had it running,started easily,blipped well,sounded good,
would a low battery affect it?
previously it started on the button,so not that low,
I had just topped the battery up now,and maybe I am imagining it ran better????
McCabe-Thiele (Ted):
Can't see alternator load slowing the engine rpm tbh, a blip on the throttle with a strobe light attached should show if the advance/retard is working okay.
You seem to have eliminated everything else, going back to a previous question does it start to misfire or just seem like rev limiter has tripped in?
If changing the small old coil for a new one was the cause then it must be the new coil causing the issue no??
Johnwebley:
just like a rev limiter,
I can't re fit the old coil,as I chucked it out ages ago,
mad day of clearing out supposed junk
McCabe-Thiele (Ted):
I think most of us have done something similar when doing rebuilds when the old parts pile gets too large
Is the replacement coil branded?
Is there an alternative that you could try or borrow from a member?
Might be worth trying the original part number to find a replacement.
Is this yours 30500-306-673 ?
Have you tried the tests on page 63 of the service manual in Ashs dropbox?
.
https://www.squaremotorcycleparts.co.uk/products/ignition-coil-honda-cb200-cb-200-1976-1979?variant=41572787355802¤cy=GBP&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic
Oddjob:
How sure are you that the new HT caps are not fakes, lots of them around and they fail like you state. I had one HT cap that failed when it got hot many years ago now, acted just like that and that was on a four cylinder, just wouldn't rev past 6K. Just cause it's new doesn't mean it can't be the fault.
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