09 xp spark trouble

mountainhunter

Active member
Joined
Dec 16, 2008
Messages
60
Reaction score
23
Location
dawsoncreek bc
son's 09 800 summit , has very poor spark on mag side. put in new plugs and wires,won't fire until the motor is warm .pto side is fine . i am thinking coil but any thoughts would be appreciated..
 

BIG HEAD

Active member
Joined
Jan 25, 2009
Messages
98
Reaction score
4
Location
Elk Valley BC
switch pto to mag ( same coil for each side ) if the same side has problems check compression.
 

mountainhunter

Active member
Joined
Dec 16, 2008
Messages
60
Reaction score
23
Location
dawsoncreek bc
compression is good in both holes. mag side will barely fire the plug , kind of a weak orange spark below the electrode. both plug wires come out of the same coil no? thanks
 

revbyu

Active VIP Member
Joined
Nov 24, 2008
Messages
864
Reaction score
1,409
Location
Calgary
Not near my sled to look at the coil - is there just one ground / one power wire for the coils or is there one for each side - very possible coil is shorted to ground. Poor electrical power supply / ground. I believe the coils fire at the same time - odd that one just has good spark - would help having electrical schematic to pinpoint problem .
 

BIG HEAD

Active member
Joined
Jan 25, 2009
Messages
98
Reaction score
4
Location
Elk Valley BC
same coil for each plug. Fires on top and bottom of stroke. changed plug, changed wire. Now change coil!
 
Top Bottom