rich250rracer Posted March 8, 2008 Report Share Posted March 8, 2008 I rarely post here, but don't let the name fool you, I do own a Banshee. I run a small shop out of my home and encountered a problem with an '02 Banshee that belongs to a friend of mine. There are some mods on this quad but I don't think they'll have a bearing on this issue. This quad has always been a little tough to start in cold weather, but once she started everything was good. The quad came to me to replace the clutch, do some suspension work, and freshen the top end. A new set of pistons and rings brought compression right back where it should be, there where no other mods or changes made during this rebuild. Now, here is the problem. Temperatures around here have been bouncing all over the place, from 20 degrees to 60 degrees. If the temps drop under 45 degrees, the quad refuses to start. I have drained the bowls and tank, put in fresh gas, ran a check on the stator, and bumped the pilot jets up from 25's to 30's. None of this has helped if the temperature falls below 45. If it is above 45, it runs just a tad rich at idle and just above idle with the 30 pilot jets installed. Using a heat gun, I started by warming the CDI, then the coil, then the plugs. Still no help. I then aimed the heat gun towards the air filter, giving it just a little warm air. As soon as the motor gets a shot of that warm air, the quad will start on one kick and idle perfectly. It just doesn't seem like a jetting issue to me, since it does run just a little rich above 45 degrees. One other thing that I have noticed consistently, when the temps are below 45, the quad will usually fire for a split second on the first two kicks, then nothing. Any help would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
FireHead Posted March 8, 2008 Report Share Posted March 8, 2008 I rarely post here, but don't let the name fool you, I do own a Banshee. I run a small shop out of my home and encountered a problem with an '02 Banshee that belongs to a friend of mine. There are some mods on this quad but I don't think they'll have a bearing on this issue. This quad has always been a little tough to start in cold weather, but once she started everything was good. The quad came to me to replace the clutch, do some suspension work, and freshen the top end. A new set of pistons and rings brought compression right back where it should be, there where no other mods or changes made during this rebuild. Now, here is the problem. Temperatures around here have been bouncing all over the place, from 20 degrees to 60 degrees. If the temps drop under 45 degrees, the quad refuses to start. I have drained the bowls and tank, put in fresh gas, ran a check on the stator, and bumped the pilot jets up from 25's to 30's. None of this has helped if the temperature falls below 45. If it is above 45, it runs just a tad rich at idle and just above idle with the 30 pilot jets installed. Using a heat gun, I started by warming the CDI, then the coil, then the plugs. Still no help. I then aimed the heat gun towards the air filter, giving it just a little warm air. As soon as the motor gets a shot of that warm air, the quad will start on one kick and idle perfectly. It just doesn't seem like a jetting issue to me, since it does run just a little rich above 45 degrees. One other thing that I have noticed consistently, when the temps are below 45, the quad will usually fire for a split second on the first two kicks, then nothing. Any help would be greatly appreciated. Are you sure the choke plunger is sealing properly and that the choke jet is free and clear? Quote Link to comment Share on other sites More sharing options...
blowit Posted March 8, 2008 Report Share Posted March 8, 2008 Are you sure the choke plunger is sealing properly and that the choke jet is free and clear? That is kinda where I was headed. I am wondering if your choking circuit is causing problems. If you can dribble some raw fuel into the carb throats and get a good response, you will know what is up. Remember that the air screws are critical to good starting and may need constant adjustment for a large ambient air delta. Brandon Quote Link to comment Share on other sites More sharing options...
rich250rracer Posted March 8, 2008 Author Report Share Posted March 8, 2008 (edited) That is kinda where I was headed. I am wondering if your choking circuit is causing problems. If you can dribble some raw fuel into the carb throats and get a good response, you will know what is up. Remember that the air screws are critical to good starting and may need constant adjustment for a large ambient air delta. Brandon That was something I forgot to mention, it will start easily if I give it a spray of fuel. I did use two different choke plungers, with no change. This choke jet is new to me, where is it accessed? I don't remember seeing anything removeable behind the choke plunger. I thought I cleaned every orfice when I had the carbs apart, but I may have missed it. Edited March 8, 2008 by rich250rracer Quote Link to comment Share on other sites More sharing options...
FireHead Posted March 8, 2008 Report Share Posted March 8, 2008 That was something I forgot to mention, it will start easily if I give it a spray of fuel. I did use two different choke plungers, with no change. This choke jet is new to me, where is it accessed? I don't remember seeing anything removeable behind the choke plunger. I thought I cleaned every orfice when I had the carbs apart, but I may have missed it. The choke tube and jet is in the float bowl, not the carb. Maybe that's where you missed something? Quote Link to comment Share on other sites More sharing options...
rich250rracer Posted March 8, 2008 Author Report Share Posted March 8, 2008 The choke tube and jet is in the float bowl, not the carb. Maybe that's where you missed something? Sounds like it, I'll pull the carbs again today. Thanks to everyone for the help. I'll post the results. Quote Link to comment Share on other sites More sharing options...
rich250rracer Posted March 9, 2008 Author Report Share Posted March 9, 2008 We're back in business guys. Thank you very much. Quote Link to comment Share on other sites More sharing options...
FireHead Posted March 9, 2008 Report Share Posted March 9, 2008 We're back in business guys. Thank you very much. Whta wound up being wrong? Quote Link to comment Share on other sites More sharing options...
rich250rracer Posted March 9, 2008 Author Report Share Posted March 9, 2008 Whta wound up being wrong? The last time my buddy was into the carbs he had them both apart at the same time. Needless to say, the bowls got switched. I wasn't familiar with the choke setup on Banshees, so when I had them apart for cleaning during the rebuild, I didn't even notice it. He always complained about it being hard to start when cold, it starts on the first kick now. Quote Link to comment Share on other sites More sharing options...
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