Polaris Discussions about Polaris ATVs.

99 400 SPORT

Old Jul 20, 2004 | 11:32 PM
  #11  
oghma's Avatar
Range Rover
Joined: Jun 2004
Posts: 172
Likes: 0
Default 99 400 SPORT

The idle could be explained by the throttle cable but fouling plugs?? Sounds to me like a combination of things could be wrong first thing I would do is to check the cable for sharp bends maybe it is hanging up somewhere if it is broke or messed up order a new one. Next, IF there is still a problem, woulb be to check the carb, maybe it had aftermarket parts and someone stripped it before they traded it in. If they had to rejet and then didnt bother to change back when they traded in would explain what seems to be an overly rich mixture. Of course the air filter being clogged could do that too. As far as stock setting are concerned Main jet is 230 the pilot is 35 and the needle should be in the 3rd slot. At least thats what mine was when it was stock.
 
Reply
Old Jul 21, 2004 | 12:04 AM
  #12  
BeltDrive's Avatar
Pro Rider
Joined: Mar 2004
Posts: 375
Likes: 0
Default 99 400 SPORT

Maxdad it could also be a choke problem. Just something to check.
 
Reply
Old Jul 21, 2004 | 12:40 AM
  #13  
modquad's Avatar
Elite Pro Rider
Joined: May 2001
Posts: 5,309
Likes: 0
Default 99 400 SPORT

Lot's of great suggestions. Start with the basics....most of the time, that's where you'll find the problems. [img]i/expressions/face-icon-small-smile.gif[/img]
 
Reply
Old Jul 21, 2004 | 07:31 AM
  #14  
maxdad's Avatar
Thread Starter
|
Trailblazer
Joined: Nov 2000
Posts: 90
Likes: 0
Default 99 400 SPORT

THANKS THAT SHOULD BE A START. I WILL SEE IT THIS WEEKEND AND CHECK SOME THINGS OUT.
MAXDAD
 
Reply
Old Jul 21, 2004 | 08:36 AM
  #15  
scramblered's Avatar
Pro Rider
Joined: Sep 2000
Posts: 1,867
Likes: 0
Default 99 400 SPORT

plugs must be br 8ES,if you go witht the br9,i don't known but they tend to fouls easier,it seem motor need special heat to maintain proper piston timing.air filter must be clean,on stock airbox revome yellow front baffle.



 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ATVC Correspondent
Drivetrain, Suspension & Tires
2
Sep 30, 2015 01:37 AM
Hack714
General Chat
2
Sep 26, 2015 08:11 AM
cboler9
Yamaha
3
Sep 24, 2015 08:35 PM
kampswas
Buying an ATV
4
Sep 23, 2015 05:05 AM
Hack714
Buying an ATV
11
Sep 20, 2015 05:54 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread

All times are GMT -5. The time now is 06:29 AM.