Question about 1999 Suzuki GSX 1300 R Hayabusa
Suzuki Hayabusa (1999 model) seems to be over fueling and back firing. It was running rough until 3,000 revs then it would take off and now runs rough all the time. It has put petrol into the oil. Its only done 15,000 miles, new plugs didn't make any difference. Have tried a new fuel pump with no sucess.
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Posted on Jan 02, 2017
Sounds like water in the gas.
ALWAYS have a fire extinguisher on hand when working on carburetors.
For each carb > Drain the carburetor. There should be a screw on the lower side or bottom of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.
Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Put the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.
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Posted on Jun 11, 2009
You need to check and see if you are getting fuel from the tank into your carbs, if you pull the line that feeds the petcock valve off the top gas should come out. If it doesnt there is a clog in your tank. Now pull the line off the bottom of the petcock valve (this feeds your carbs) and make sure you have fuel at all setting of the petcock valve except for off. If you dont then you probably have a bad petcock valve. If you are getting fuel from the petcock vavle into you carbs then there is a problem with your carbs.
If you take the fuel bowl drain screw out of the carb (located on the bottom). Gas should run out of the associated carb, if it doesn't, then you have something stuck in the carb and one carb not working correctly can make the bike not run. If you find this to be the problem get a can of carb cleaner, take the fuel bowl drain screw out and let the gas run out, stick the red spray wand from the can of cleaner into the hole and flush your carbs out really good.
Then give it a try. Make sure that the connection between your carbs and head is tight while you are there. If that does not fix your problem you may ahve to pull the carbs and take a closer look.
Posted on Apr 08, 2010
Ride the bike 20 or so miles on open road. Stop and remove plug to inspect. 'Are they black or white ?
Black =rich white=lean
Posted on Feb 01, 2011
I had the same thing, it was a carburetor problem. I just took it to a mechanic. Make sure your plug is the resistor type because mine was not and that was what caused the problem
Posted on Jan 13, 2012
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