Question about Motorcycles
The usual cause of this is the ignition timing. Use a timing light and check with the engine running.
Posted on Oct 30, 2012
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Posted on Jan 02, 2017
Sounds you have a problem with the carb float and needle assembly (i.e. the float and needle are not stopping the flow of fuel into the carb even when it is full as they should).
Backfires are a symptom of too much fuel in the combustion chamber typically. Try turning your shut off valve to "off" and let it sit for a day - then try to start it with the valve still off. Ideally it will start and run for a bit - until it uses the fuel available in the carb. If not - provide more detail.
Posted on Sep 10, 2009
CLEAN THE CARB AGAIN IF IT RUNS ON STARTING FLUID ITS NOT GETTING FUEL YOU WILL NEED TO REMOVE THE JETS AND MAKE SURE THEY ARE CLEAR
Posted on Jan 29, 2010
Check your plugs. If all four are sparking then your carbs are out of sync. They will need to be re-balanced.
If you are capabable in doing this job your self, you will need a screwdriver that fits your adjuster screws and a CarbTune Carb balancer.
Remove your tank and airbox.
You should see the flaps inside your carbs. These should open when you move your throttle.
Start on the outside carbs to get them balanced with the 2 centre ones.
To start, unscrew the adjusters all the way out. then screw them in until the 2 outer carbs move at the same time as the inner 2 carbs
Once this is done then adjust the centre balancer to syncronise the 2 left hand carbs to the 2 right hand carbs.
Now if you have done this correctly, all four carbs should open at the exact same time.
If you have a Carbtune balancer, remove the plugs from the top of your inlet manifold and plug in the hoses from the carbtune balancer.
Start the engine and adjust the screws until the weights inside the Carbtune balancer all read the same.
Once done, remove the balancer, replace the plugs into the inlet manifold, refit the airbox and tank and it should run so much better.
If your not 100% confident to unertake this job yourself, take the bike to your local dealer and ask to have the carbs balanced.
Posted on Mar 15, 2010
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if the tank is full add dry gas if not then remove all gas and add alchol and clean that way then refill with new gas . also the carb or injector will need to be purged
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