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Carbonized muffler - KMX 125 kawasaki Motorcycles

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17hp kohler ohv runs rough and muffler glows red hot

muffler full of carbon remove muffler heat up red hot throw in bucket of cold water remove and throw as hard as you can on pavement clean carbon out of exhaust part of headt make sure piston is all the way up you dont want carbon in your motor reinstall thank me

Oct 06, 2012 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

Leaf blower wont run

Make sure the muffler isn't plugged with carbon. If it is you can use a hand held torch to burn out the excess carbon.

Aug 17, 2012 | Weedeater Garden

1 Answer

Echo trimmer srm230 runs but will not rev to cut grass

Check the spark arrester in the muffler out let is no blocked with carbon, remove the muffler and check the exhaust port itself is not carboned up.

Jun 03, 2012 | Echo Garden

1 Answer

Echo power pruner loses power

try it with the muffler off they build up with carbon if better open the muffler and clean out the carbon

Apr 03, 2012 | Garden

1 Answer

Echo edger stalls when gas is pressed. It is easy to start but will only idle and has no power to work.

Check and see if the muffler and/or exhaust port is plugged with carbon. Many 2 cycle mufflers use a small metal screen called a spark arrester that can get plugged by carbon and will not allow the engine to rev up. A small hand held torch works best for burning the carbon off of the screen and from the insides of the muffler. Hold the screen with a pair of pliers while heating it up. Same thing with the muffler. Carefully tap the muffler after you have burned off any excess carbon to remove any large pieces still inside. You can carefully use a small flat blade screwdriver to scrape out any carbon from the exhaust post (opening) in the engines cylinder.

Jul 19, 2011 | Garden

1 Answer

I have a echo cs-341 only way it will start is if the muffler is off. any ideas? i did pull the screen still did not help. thanks

I guess the muffler is blocke inside with carbon, burn it out with a small gas torch, the carbon will burn and eventually fall out.

Jul 06, 2011 | Echo CS600P Gas Chainsaw 20 Inch

1 Answer

Homelite Mighty Lite won't run but a few seconds

Check your muffler to be sure doesn't have a build up of carbon from the oil/gas fuel. This is the problem with 99% of equipment that uses mixed gas. Take the muffler off and see if it runs better without it. If so there is carbon build up in the muffler and muffler port on the engine. Burn the muffler in an open fire for a while to remove the carbon, or burn it with a torch, toss out the screen that's is in most mufflers, (unless of course you live in California where they are required), Scrape out the port with a knife and after the muffler cools on it's own (don't cool with water as you will warp it and not get a good seal) reinstall and see if this solves the problem.

Jun 24, 2009 | Homelite Mighty Lite Lawn Trimmer

2 Answers

Idles but will not stay running

This is nearly always caused by the muffler and muffler port being blocked by carbon not allowing the air to flow properly. Take the muffler off and see if this makes a difference. If so, then burn the carbon out of the muffler with a torch or throw it in an outside fire for awhile. Let it cool on it's own, do not use water as you will warp it and not get a good fit. Also take a knife and scrape the carbon out of the muffler port on the engine. Should solve your problem.

Jun 24, 2009 | Echo Rapid Loader, Trimmer Head

1 Answer

Husqvarna weedeater idles, but stalls out when i give it gas

Clean the carbon from the muffler and muffler port. The carbon build up from the oil/gas mix has cut the air flow from the engine.

Jun 19, 2009 | Husqvarna 28cc Gas Line Trimmer

1 Answer

Replaced gas line and primer bulb. cleaned carb, but not sure which direction the diaphram goes in. Machine idles but spits gas from top of carb and dies when throttle is pushed. Gas line routing? Seems...

If the engine dies when you try to speed it up chances are your muffler is the problem. Any equipment that uses a gas/oil will eventually have a stopped up muffler due to carbon buildup. This restricts the air flow and the engine won't run or open up. First take the muffler off and see if you can start and adjust the carb with it off. Turn both the air and the gas adjustment screws all the way in, then back them both out one and a quarter turns. Start from there.
Unstop the muffler by throwing it in an open fire for 10 to 15 mins or using a torch to burn the carbon out. There is a screen in the muffler that I would toss out (unless you live in California) for the only purpose it serves is catching carbon. Let the muffler cool on its own, don't cool with water or you will warp it and it won't seal right. Also while the muffler is off check the muffler port and scrape off any buildup there with a knife. Hope this helps.

Jun 18, 2009 | Ryobi Cultivator

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