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By donny
Hello I am new here but have had this machine for about 5 years. I am having issues with it surging and sometimes sounding like a small backfire thru the intake. When putting in low, high or reverse it will struggle then go full power then struggle. It will only do the small backfire thing while in neutral reving it many times. Once in awhile it will throw a check engine light.
Parts replaced/checked:
I have checked the valve lashing, timing and adjusted. Parts replaced are the coils, spark plugs, injectors, fuel lines, fuel pump, IAC sensor, TPS sensor, throttle cable, speed sensor, primary and secondary clutch and belt.
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By great8redsfan
Okay folks. I have a low power issue. Been like this for a few years. Place I work at bought 3 and all have lost most of the pulling power. They gave them away after local shop worked on one for 3 months and it had great power for about 1 month and then crap. They replaced throttle body, fuel injector, spark plug and IAC motor. Seat belt switches have wires cut and left open so no seat belt warning light anymore. It revs to 6k rpm in neutral but when put in gear and take off in low it just doesn’t seem to want to go anymore. Running 93 octane fuel with Stabil. Any ideas greatly appreciated. I dont have a scan tool but no codes on dash. If held to floor it pops a little and runs almost 5K rpm but if I let off pedal about an inch it smoothed out and revs up to 6k rpm.
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By Buddee
Put a new carb on the 500 to replace the leaking OE one. Machine idles fine and mid and top end runs great. It tends to have a hesitation right from the start - bottom end. Thinking it may be the air/fuel screw?? I didn't do anything with the carb out of the box and is it direct replacement for my machine. Of interest is the manual choke doesn't seem to work very good now.... wonder is it getting too much air?
Any help appreciated!
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By tim hughes
does any one else have a slipping belt on the hisun ...i put new wet clutch one way bearing new belt, cleaned primary and secondary and still get slight slippage
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