Exhaust getting cherry red?
#1
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I HAVE A 97 SPORTSMAN ITS BEEN RUNNING LIKE s**t
about half throttle its fine but when you open her up it just pops, now the steps i took where, cleaned the tank,cleaned and dismantled the carb 3 times check the spark plug,changed the exhaust back to stock changed the fuel pump. it idles fine,also about 5 min of riding under load the exhaust get cherry red at the manifold, all this happened after i got stuck in a 1 1/2 ft mud hole
that took damn near an hour for me and my buddy to get it out that a different story lol does not over heat. so any ideas would be great to getting this bastard back on the trails!!!!!!
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#2
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This means it is running to rich not burning all the fuel in combustion. fuel ends up in the exhaust. You may possibly have weak ignition. Did you try and clean out the stator? Allso may be ignition coil on the way out.
Some things to try. Hope it helps. I will let you know if I can think of any thing else.
Some things to try. Hope it helps. I will let you know if I can think of any thing else.
#3
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This means it is running to rich not burning all the fuel in combustion. fuel ends up in the exhaust. You may possibly have weak ignition. Did you try and clean out the stator? Allso may be ignition coil on the way out.
Some things to try. Hope it helps. I will let you know if I can think of any thing else.
Some things to try. Hope it helps. I will let you know if I can think of any thing else.
#4
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how did the plug look?? if its running red hot pipes its because its running lean, too much air ,not enough fuel to cool it. also the older sportsmans wear having cam issues acting like some of these issues wear the lobes would wear off and not letting the valves open which would make it run hotter as well. imo.
#7
![Default](https://atvconnection.com/forums/images/icons/icon1.gif)
I HAVE A 97 SPORTSMAN ITS BEEN RUNNING LIKE s**t
about half throttle its fine but when you open her up it just pops, now the steps i took where, cleaned the tank,cleaned and dismantled the carb 3 times check the spark plug,changed the exhaust back to stock changed the fuel pump. it idles fine,also about 5 min of riding under load the exhaust get cherry red at the manifold, all this happened after i got stuck in a 1 1/2 ft mud hole
that took damn near an hour for me and my buddy to get it out that a different story lol does not over heat. so any ideas would be great to getting this bastard back on the trails!!!!!!
![Mad](https://atvconnection.com/forums/images/smilies/mad.gif)
![EEK!](https://atvconnection.com/forums/images/smilies/eek.gif)
As already suggested, how does the plug look... fouled (black) or lean (whitish)?
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#8
#9
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Hot pipes mean lean, look at the year of this 500 fellas. Personally for FYI I would look at valve lash and inspect the cam. Those things were known for the exhaust lobe wearing off. Then go at the diaphragm in the carb, make sure all of that is free. I'm thinking this might be two issues on this thing.
#10
![Default](https://atvconnection.com/forums/images/icons/icon1.gif)
Hot pipes mean lean, look at the year of this 500 fellas. Personally for FYI I would look at valve lash and inspect the cam. Those things were known for the exhaust lobe wearing off. Then go at the diaphragm in the carb, make sure all of that is free. I'm thinking this might be two issues on this thing.
this is why i mentioned this=(also the older sportsmans wear having cam issues acting like some of these issues wear the lobes would wear off and not letting the valves open which would make it run hotter as well. imo.
i also agree that if a bad diaphr. could be the issue. good call for sure.
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