This is a discussion on 1998 gizzly 600 high idle within the Grizzly Engine & Transmission forums, part of the Grizzly Forums category; I have a 1998 grizzly 600 and the idle is way to high, so we tried turning it down low so i can actually get ...
I have a 1998 grizzly 600 and the idle is way to high, so we tried turning it down low so i can actually get it in and out of gear and after a little bit it starts to pop and backfire and then the idle goes back up were it was. i cant think of why it would do this any ideas?
Could be a problem with the choke/choke cable/dirty fuel filter/faulty fuel tank valve/poor connection from carb to motor/plugged air filter.
The fuel air mixture is off, if it isn't outside the carb it's in it. Back firering is a lean condition, but a rich condition will cause the motor to rev when the fuel is running out. You may have been running rich and are now experiencing a problem causing a lean condition, 2 problems.
As somebody on the forum helped me with this advice - check for a cracked intake boot (rubber). It could very likely cause your problem. Even if yours is okay, it just takes a minute to check it. Mine was cracked on a 2002 grizzly 660.