tristan18au
Member
- Jun 3, 2001
- 186
- 0
i own a 1998 modle XR250 which is very hard to start hot or cold and back fires when you try to start it.we have replaced the spark plug and check the valve clearance and have even put spit fire valve cleaner in it.it has compression and does rattle a lot when it gets hot. whats going on? please help!:(