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Cm125 only running on one cylinder - 2002 Honda CM 125 C

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I have a 1999 VW Beetle and it's not running on all 4 cylinders. It's only running on 3 cylinders.

Probably runs better on three cylinders than most american made cars do on four! LOL.

Is that cylinder getting spark? Is the injector working? Plug fouled?

Sep 21, 2015 | Cars & Trucks

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Started sputtering back fireing I think its only running on one cylinder.coil or fuel pump ? I changed plugs no change.please help.

Try swapping over the coils. You will need to completely swap over, not just the HT leads. There should be 2 electrical wires that push onto contacts for each coil, swap these to the other coil along with the plug leads. If it doesn't change anything (i.e. still runs on the SAME one cylinder) then there is nothing wrong with the coils. If, however it runs on the other cylinder, then the coil feeding the non-running cylinder is faulty.
Won't be the fuel pump as it is feeding the running cylinder and there isn't a separate pump for each cylinder. However, fuel may not be getting to the non-runner and that is most likely carb related IF you have more than one carb. I have 4 but some multi cylinder bikes may only have a single carb.

Aug 29, 2015 | Motorcycles

1 Answer

Honda cm 125

Hi, Anonymous the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Honda Motorcycle Manuals 1980 to Now
Honda CB125T
Honda CM125 Wikipedia

Jun 02, 2014 | 2001 Honda CM 125 C

1 Answer

One cylinder running only

check the cam lobes,valve springs, the valves them selves especialy the inlet, without looking if its a push rod or chain, but check the cam shaft mechanism ie chain

Jul 17, 2013 | Harley Davidson FLHT Electra Glide...

1 Answer

1200 sportster not running on back cylinder

Verify the cylinder is not firing by measuring the temperature on the exhaust right out of the cylinder. If it is not firing the tempature will be much cooler than the front cylinder. Once you have determined the rear cylinder is not firing then you need to perform a compression test on the rear cylinder. If it is not with in specifications, you may have broken rings, burned valves or hole in piston. Until you run compression test you will not know which way to go.

Apr 05, 2013 | Harley Davidson XL 1200 C Sportster Custom...

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Only running on the number 1 cylinder and 4 cylinder

One coil works #1 and #3 cylinder and the other one works #2 and #4, it could be a bad coil or fouled plugs on the dead cylinders.

Dec 27, 2012 | Suzuki GSF 400 Bandit Motorcycles

1 Answer

Hi I had honda CM125 for 30 years now there is a problem that bike is doesn't start, the kik is falling down freely and it doesn't moveing eny cilinder

im asumeing its a older model with no electric start have you tryed bumping it ( push it down road clik in to gear engine starts up ? if not try it will it start like that ? if so its proberbly something to do with the kick start shaft / gear teeth i would expect to have to go in the right hand engine caseing to find the issue and repair hopefully something just poped out of place

Oct 29, 2012 | Honda CM 125 C Motorcycles

1 Answer

Does any one know the torque settings for the rear wheel spindle nuts on a cm125?

try 8.5-10.5 kgf m using torque wrench or just turn the nut slowly until it reches the point where more effort is required, just add 1/4 turn and that should be just about right. Good enough?

Apr 18, 2010 | 2000 Honda CM 125 C

1 Answer

What spark plugs does Honda cm125, 1988 wear?

I looked in the NGK website and couldn't find this motorcycle.......but either way if you goto an Auto Zone or Advanced Napa etc. they can look it up and give you what you need.

Feb 15, 2010 | 2000 Honda CM 125 C

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