Honda ATV Forum banner

1 - 3 of 3 Posts

·
Premium Member
Joined
·
4,389 Posts
Discussion Starter · #1 ·
Ok so im stumped i did a high speed shut off test today and got a crazy looking spark plug read on my 300ex. Its like pitch black on one side and white like new on the other. It seems to be running both rich and lean at the same time. Dunno what this could be? Any help plz?
 

·
Super Moderator
Joined
·
18,228 Posts
Leaking intake or exhaust valve seal on one side would be my guess.
 

·
Premium Member
Joined
·
4,389 Posts
Discussion Starter · #3 ·
I am gunna be so pissed because i got them with my engine gasket kit.............................and i tested them by pouring gas in it and it didnt leak at all. Is there any good way of testing this?
 
1 - 3 of 3 Posts
Top