1996 Polaris Trail Boss 250 rich idle
#1
1996 Polaris Trail Boss 250 rich idle
Hello
Just picked up a 1996 Polaris Trail Boss from a friend of mine he was messing with the carb trying to get it to run.
It seams to start fine but will not idle and seams to flood out. It don't seam to matter what you do with the idle or mixture screws any ideas? Do the O-rings behind the intake boot go bad? That I would think would give me a lean condition. Could the Float be set wrong and gas be getting by the needle and seat? The only other thought I just had was maybe the Air cleaner is plugged have not pulled it yet.
The thing is when he bought it it ran fin it sat then the next time he went to start it it started acting up fouling plugs etc so that is why he rebuilt the carb and started fiddling with it.
I know the Compression is at least 100 PSI when we checked it but cant remember the exact number.
The carb is a Mikuni (SP?) I think it is a 30mm if I remember correctly. I am in Wisconsin.
Oh it seams to load up to when letting up on the throttle.
Just picked up a 1996 Polaris Trail Boss from a friend of mine he was messing with the carb trying to get it to run.
It seams to start fine but will not idle and seams to flood out. It don't seam to matter what you do with the idle or mixture screws any ideas? Do the O-rings behind the intake boot go bad? That I would think would give me a lean condition. Could the Float be set wrong and gas be getting by the needle and seat? The only other thought I just had was maybe the Air cleaner is plugged have not pulled it yet.
The thing is when he bought it it ran fin it sat then the next time he went to start it it started acting up fouling plugs etc so that is why he rebuilt the carb and started fiddling with it.
I know the Compression is at least 100 PSI when we checked it but cant remember the exact number.
The carb is a Mikuni (SP?) I think it is a 30mm if I remember correctly. I am in Wisconsin.
Oh it seams to load up to when letting up on the throttle.
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I am in Green Bay
ok pulled a little apart last night. Not down to the intake boot yet though.
I know the boot from the Air Cleaner to the Carb is cracked for sure that one I need to replace it was siliconed to try and fix it I noticed. The Air filter smells like gas and the inside the carb looked wet and it has not ran in 24 hrs.
The Carb was completely torn apart about a month or two ago and cleaned inside and out and a complete rebuild kit with a new choke installed.
I also notice two clear lines in there one just goes no place and is connected to the carb. The other goes to a "T" that looks like it goes to the crankcase and the carb and the other end goes to a VAC I am guessing check valve and then to no place. Are these anything. I have a pic if I figured out how to post it correctly.
When I tried to start it last night it sounded like a shot gun going off from being loaded up.
ok pulled a little apart last night. Not down to the intake boot yet though.
I know the boot from the Air Cleaner to the Carb is cracked for sure that one I need to replace it was siliconed to try and fix it I noticed. The Air filter smells like gas and the inside the carb looked wet and it has not ran in 24 hrs.
The Carb was completely torn apart about a month or two ago and cleaned inside and out and a complete rebuild kit with a new choke installed.
I also notice two clear lines in there one just goes no place and is connected to the carb. The other goes to a "T" that looks like it goes to the crankcase and the carb and the other end goes to a VAC I am guessing check valve and then to no place. Are these anything. I have a pic if I figured out how to post it correctly.
When I tried to start it last night it sounded like a shot gun going off from being loaded up.
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#9
Somthing else to keep in mind - 2 strokes are not meant to sit and idle. You can start them and let them warm up for 30 seconds to a minute, but much longer than that will give you loading and fouling issues.
If you have not already done so, replace the jets in the carb with the OEM sizes (Ask your dealer). Replace the main jet and the pilot jet with new ones. If the quad has sat like you said, these can be very difficult to clean out just right. It is easier to just replace them.
If you have not already done so, replace the jets in the carb with the OEM sizes (Ask your dealer). Replace the main jet and the pilot jet with new ones. If the quad has sat like you said, these can be very difficult to clean out just right. It is easier to just replace them.
#10
I will look what jet is in it could be the winter jet I know he tried that one.
But as idle goes I can't even get 2 seconds from it that is how bad it is. I am starting to think it is a combination of things so I am going to put in a new air filter and set the carb back to factory that is supposed to be good I think from 40 to 80 Deg F.
But as idle goes I can't even get 2 seconds from it that is how bad it is. I am starting to think it is a combination of things so I am going to put in a new air filter and set the carb back to factory that is supposed to be good I think from 40 to 80 Deg F.