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The second generation of the Kawasaki Ninja 500R, originally the EX500 and the GPZ500S in some markets, produced by Kawasaki between 1994 and 2009.

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bike dying while riding after a while

hi my bike runs fine idles fine but last week till a couple days ago it drove fine then after twenty of riding it wouldnt accelerate with and and slowly it would bog down and die and wouldn’t start turns over but no start but letting it sit for a while it would start back up two days ago i rode it and it ran fine i rode it for two hours and it didn’t bog down or nothing it ran with no issues yesterday it drove it for four hours and ran fine until i was on my way home and it started bogging down again i replaced the oil and oil filter coolant even tho it’s not overheating spark plugs replaced the petcock new fuel lines new fuel filter new airfilter cleaned out the gas tank fresh gas new battery and a bought a refurbished carb i am totally lost at what it could be my bike is a 2006 kawasaki ninja 250

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1 Comment

Did you ever figure out what the issue was?

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crwdns2893814:0crwdne2893814:0

It does sound like a fuel delivery problem but your ignition coil could be getting hot and loosing enough energy to create a good strong spark, can you check for spark when its not starting, use a spare spark plug that you cut off the bent piece of metal or more than one piece so the spark has to jump further to the side of the plug threaded area and ground the threads to the engine metal.

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I am also thinking that your fuel system is getting hydrolocked, that is an old school problem with carb cars and trucks, the fuel in the fuel line gets so hot that it does not make it to the carb float bowl as a liquid and cannot feed the engine properly, is there a way to insulate the fuel lines and carb from all the heat of the engine and exhaust for a long test drive?

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i checked my fuel it doesn’t look like it’s getting hot i checked the fuel in the tank and drained some in the carb and looked at the fuel line and they all seemed to be good. is there any other possible causes u can think of that can cause this kind of problem i yesterday i drove it to school and it ran fine but on the way home it died again but after an hour i rode it around my neighborhood it ran good again i can’t think of anything else i’ll check the coils today

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Did you end up finding the issue?

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crwdns2892346:0crwdne2892346:0

Ever heard of carburetor icing? Just happened to me.

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I had this issue I found that I was sitting too far forward on the seat and was pinching the air hose to the gas tank and “choking” the engines gas intake. Try sitting back further or wedging a shim in the seat while riding and see if that fixes it for you

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