Big Bear 400 Running Poorly
#1
Big Bear 400 Running Poorly
I inherited a Big Bear that had been sitting for a long time. Last hunting season the bike was taken to someone to get it running better. All that I can tell they did was change the air filter, spark plug, and put a new carb on. The bike sat until a month ago when I got it.
So here is the problem the bike will start missing bad when it is at half to three quarters throttle. I have drained all the old gas out of the bike and even took the new carb apart to blow air through it because I thought it could have been clogged. I put the carb back on and it is still doing the same thing. The bike idles great and will run fine at low RPMs.
I just don't know where to look or what to do next. Could it be a spark issue? Any insight on what I could check next would be great!
So here is the problem the bike will start missing bad when it is at half to three quarters throttle. I have drained all the old gas out of the bike and even took the new carb apart to blow air through it because I thought it could have been clogged. I put the carb back on and it is still doing the same thing. The bike idles great and will run fine at low RPMs.
I just don't know where to look or what to do next. Could it be a spark issue? Any insight on what I could check next would be great!
#2
#3
So I have not had time to work on the carb and adjust the needle jet. But Iwent out today and started the bike just to let it run for a little while. WhenI opened the fuel valve gas started pouring out where you can drain thebowl. Is there supposed to be an o-ring that goes on the boltthat you turn to drain the bowl? If not why would this be leaking?
Thanks!
Thanks!
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hoopduerr
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
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06-02-2015 09:01 AM
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