Polaris Discussions about Polaris ATVs.

Spark Plug blowing out

Thread Tools
 
Search this Thread
 
  #1  
Old 08-28-2006 | 08:35 PM
toehanus's Avatar
Thread Starter
|
Range Rover
Joined: Aug 2006
Posts: 152
Likes: 0
Default Spark Plug blowing out

My brother's '03 trailboss 330 is blowing it's sparkplug out when he rides it. Looked at the plug and the threads look chewed up. The threads on the plug hole also look chewed up. I'm guess it came loose and wallered out the plug hole before it finally blew out. Can this be fixed or is the atv just screwed?
 
  #2  
Old 08-28-2006 | 08:56 PM
stendori's Avatar
Super Quad Patrol
I'm watching you!
Joined: Jul 2003
Posts: 14,264
Likes: 6
From: central maine
Default Spark Plug blowing out

worst case you'll have to but a new head for it. i have a plug thread chaser to fix bad threads. so it might be fixable but if it's blowing the plug out of the whole chances are its really screwed up and wore completely out. ( note, if you do try to fix the threads buy chasing them or what ever the filing are goign to go down in the ebgine. not good. i would just take the head off and then decide.
 
  #3  
Old 08-28-2006 | 08:57 PM
Bradracer18's Avatar
Extreme Pro Rider
Joined: Sep 2003
Posts: 3,160
Likes: 0
Default Spark Plug blowing out

Try putting in a new plug........if it still does that, I'd probably say you might need a new head, or some real machining
 
  #4  
Old 08-28-2006 | 09:52 PM
toehanus's Avatar
Thread Starter
|
Range Rover
Joined: Aug 2006
Posts: 152
Likes: 0
Default Spark Plug blowing out

Thanks guys. You wouldn't happen to know a good place online to find one would you? The local Polaris dealer really sucks. Again, thanks for the help.
 
  #5  
Old 08-28-2006 | 10:22 PM
lslubecki's Avatar
Pro Rider
Joined: Aug 2003
Posts: 379
Likes: 0
Default Spark Plug blowing out

Try a heli-coil or thread-sert. Both will repair stripped threads. you can do it yourself if you are careful. Kits are about $30.00 and you wont have to take the head off. After tapping the threads use compressed air to blow out the shavings or crank it over with out the plug in it. I have used then on aluminum corvair cylinder heads. Should find them at main auto, napa etc.

Steve
 
  #6  
Old 08-28-2006 | 10:34 PM
SCRAMMYTODD's Avatar
Pro Rider
Joined: Feb 2006
Posts: 1,136
Likes: 0
From: Whitehorse, YT
Default Spark Plug blowing out

Whether you tap the head or use a heli-coil, pack the taps with wheel bearing grease. That will hold the metal shavings from dropping into the cylinder. I have used heli-coils on Ford 5.4 and 4.6 with aluminum heads with great success. (Ford doesn't recommend a heli-coil but its cheaper then a cyl head and re and re at 12 hours @ $90)
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Big bousse
Polaris
8
09-26-2015 10:42 AM
cornermike
Polaris
1
07-30-2015 06:37 AM
ScopeZ_
Honda
10
07-28-2015 01:44 AM
Ty64
Technical and How-To Articles
0
07-25-2015 02:02 PM
Dirtbikemike1
Yamaha
0
07-21-2015 04:13 AM

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


Quick Reply: Spark Plug blowing out



All times are GMT -5. The time now is 06:46 PM.