2003 sportsman 500 HO not starting-backfires
#1
2003 sportsman 500 HO not starting-backfires
The sportsman will not start for me. It turns over no problem using the starter. I’ll crank it for a while then eventually make a loud pop noise. The air seems to come through the carb.
i got it to run briefly yesterday using starter fluid. That was short lived. I could not get it to start after that using starter fluid.
one weird thing i noticed. After trying to start it for a while using the start button the engine just wouldn’t move. I forgives this was due to me drawing on the battery. So i went to use the pull start. It was solid, would not move. After a decent amount of time passes i use the cord and it moves again.
-I checked compression,80 psi.
-it has a spark, replaced the spark plug
-i checked fuel flow. It’s not a heavy flow but it’s moving the gas. I cleaned the fuel pump. Just dusty no mud.
-i removed and cleaned the carb.
-I removed and cleaned the starter. One of the brushes was stuck.
-battery is good. About a year old.
-Air-filter is nice and clean
-new gas
-i pulled the valve cover off. Everything moves, no metal or grinding noise
-i checked the fly wheel and it’s proper mounted (no sheared key)
I’m about to remove the engine and start looking inside. Any help would be greatly appreciated!!
i got it to run briefly yesterday using starter fluid. That was short lived. I could not get it to start after that using starter fluid.
one weird thing i noticed. After trying to start it for a while using the start button the engine just wouldn’t move. I forgives this was due to me drawing on the battery. So i went to use the pull start. It was solid, would not move. After a decent amount of time passes i use the cord and it moves again.
-I checked compression,80 psi.
-it has a spark, replaced the spark plug
-i checked fuel flow. It’s not a heavy flow but it’s moving the gas. I cleaned the fuel pump. Just dusty no mud.
-i removed and cleaned the carb.
-I removed and cleaned the starter. One of the brushes was stuck.
-battery is good. About a year old.
-Air-filter is nice and clean
-new gas
-i pulled the valve cover off. Everything moves, no metal or grinding noise
-i checked the fly wheel and it’s proper mounted (no sheared key)
I’m about to remove the engine and start looking inside. Any help would be greatly appreciated!!
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