Mid Range plug fowling??

[Grizzly Offroad]

OK, I have not had to change plugs in this sled (05 RMK) since I owned it....but just starting this year I am fowling 3-4 every ride! If I keep it wide open most of the day, it stays running, but if I ride low to mid range it fowls the clutch side plug. Happens every time I ride the trail in.....feels like good low and mid range, but when you try to open it up it sputters and has no power. Change the plug and it goes like a raped ape again. What's going on?.....power valves, reeds, boots?? Any ideas?

 

[Danbot]

Sounds like your oil injection is either adjusted incorrectly, or is sticking partially open.
Have you inspected you oiler cable lately?

 

[BIGGDAWG]

sounds like tps failing to me need to take a sweep test of it with an analog meter to see if it is steady or sticking

 

[Danbot]

Good point DAWG, I never think of the TPS problems leading to fouling plugs because they never led to that for me.

 

[BIGGDAWG]

when my first tp went bad it was fouling plugs anytime i let the throttle get below 1/2 when i went to test it it was stuck at 3 volts at idle. it is supposed to be .93-.97 v also need to check the harness. my started fouling plugs when i had a bad connection on the tp sensor harness.

 

[Grizzly Offroad]

Good idea. Where do you test the sensor....or put the leads? Do you know where I can find some pics or diagrams?

 

[Danbot]

How to build a setting tool
http://www.snowestonline.com/forum/showthread.php?t=67427

Video for setting TPS
http://www.snowestonline.com/forum/showthread.php?t=72725

To test your TPS for bad spots / sticking you will need to use a quality analog multi-meter set on resistance, and do slow sweeps of the TPS watching for any dead spots, spikes, or hesitation.

 

[guidoxpress]

BD is the MAN!