1998 gizzly 600 high idle - Yamaha Grizzly ATV Forum
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post #1 of 4 Old 12-31-2011, 08:03 PM Thread Starter
 
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Question 1998 gizzly 600 high idle

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?
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post #2 of 4 Old 12-31-2011, 08:11 PM
 
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probably need to rebuild carb, but first pull the carb and clean it.
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post #3 of 4 Old 01-01-2012, 10:09 AM
 
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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.
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post #4 of 4 Old 01-01-2012, 01:37 PM
 
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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.
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