Question about Motorcycles
Sounds like the gas went bad and plugged up the idle jets in the carb.
When gas sits too long, it's components start to separate (simplistic explanation), and turns almost into a varnish.
This starts plugging up things, starting with the smallest orifice, which is the idle circuit.
Take carb apart, and clean out idle circuit.
Clean/replace idle jet.
Posted on Nov 24, 2013
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Posted on Jan 02, 2017
take some wd 40 & spray around the carb boot while running to see if the idle drops for a few seconds. sounds like you have an intake side air leak causing a lean condition making the motor rev high.
Posted on Feb 16, 2009
SOURCE: wont run /idle
i'd start with removing the carbs and giving them a thorough cleaning as when bikes sit for so long, the carbs begin to get gummy/varnished from the old gas.
check for blocked holes in the pilot jet & main jet and look for "hard & dried up" gas in passages. be careful of the float bowl gasket as to not tear it or you will need a replacement.
Posted on Mar 06, 2009
The first thing you need to check is the air filter. Sometimes critters can get into the airbox when a bike sits for awhile. Sounds crazy, but it has happened to me. If nothing is blocking the filter, give it a quick clean since you have it out.
Next things to check:
Improperly adjusted fuel level
Clogged or loose main jet
Faulty fuel pump
You may not be able to check these on your own, but these are the next likely culprits.
Hope this helped
Posted on Mar 11, 2009
It sounds like time to do a top end job. The head will need to come off, then the valves should be re-seated. Carbon should be removed from the head and piston crown. Since you did not mention any engine smoking, I assume the rings are okay. If you are going to do anything with the cylinder, piston and rings, now would be a good time. But remember, if it isn't broken don't fix it.
If you do the work yourself be sure to start with the piston on TDC compression. Note the timing marks stamped on the overhead cam. The piston and marks will need to be in the same position when reassembling.
Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.
Posted on Jun 05, 2009
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