terret725
New member
my sled keeps on backfireing sence i pt the PI center dumps on. i havent turned teh fule screws out yetim goin to do that now cause i forgot befor i pulled it out last week. could this be the problem. or maybe just cuase i have some old plugs in there and trhe missfireing. only does it when its idel.
change_up
New member
OLD PLUGS! my sled did this when I got my AAEN's on it after having the same plugs in it all summer while starting it 2 times a week... Ran fine with stock pipe but with pipes it did nothing but sound like crap and backfire. Also, if you turn out your fuel screws TOO much, it may want to backfire most of the time and foul plugs at low end.
yamaholic22
Active member
run your fuel screws around 2 turns out for the center dumps.
terret725
New member
just did the fule screws they seemed like they were farther out then 2 turns so maybe it was a combination of the 2 but i cant get it running right now i keep flowing thoes plugs so im gonna have to make a run to advance auto and buy a box of plugs. plus the gas leaked out when i was doing teh screws and i just tred plullin it ove rlike 30 times and now im hungry and tired so im just gonna try it tomorow when i change the top sproket back to stock.
change_up
New member
30 times? Only took me that many pulls once out of the 5 times I've had the carbs off this season... I forgot to plug the CDI back in 
. Shouldn't really take you that many pulls unless you forgot something too... or unless there is something else wrong.
. Shouldn't really take you that many pulls unless you forgot something too... or unless there is something else wrong.
yamyrider
Active member
When we are tired and hungry and frustrated we tend to overlook things....
been there done that.
Relax and take a deep breath look again and I bet when you pulled the carbs to adjust the screw out two turns something did not go back together properly.
Are the pulgs wet with gas and oil. Stupid question (i will never admot I did this) hit the kill switch or turned the key off and kept trying to start the machine. After about 25 pulls my wife pulled the kill switch and it started right up.
been there done that.
Relax and take a deep breath look again and I bet when you pulled the carbs to adjust the screw out two turns something did not go back together properly.
Are the pulgs wet with gas and oil. Stupid question (i will never admot I did this) hit the kill switch or turned the key off and kept trying to start the machine. After about 25 pulls my wife pulled the kill switch and it started right up.
yamaholic22
Active member
LOL, thats almost as bad as me trying to find carb issues for an hour, coming up with nothing, and then realizing the sled is out of gas! I think i've done that twice!
Millinocket Rocket
New member
oh man..... that's funny....been there- you feel like an idiot, but very glad it was such an easy fix!
terret725
New member
put some new BR9ES's in and it started in 4 pulls. its amazing what some new plugs will do. seein how i havent boght any in 2 years lets see how long these extra 7 last me out of my box. didnt back fire either.
thanks for th help
do u guys run hard tops or threded tops? is there a a plus to hard? i heared there was but i usaly run the treaded cause thats what the auto parts store carries and its only like 12 bucks a box insted of 2 a piece from the dealer.
thanks for th help
do u guys run hard tops or threded tops? is there a a plus to hard? i heared there was but i usaly run the treaded cause thats what the auto parts store carries and its only like 12 bucks a box insted of 2 a piece from the dealer.