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Suzuki LTF 500 quadmaster wont full rev

1K views 2 replies 3 participants last post by  jammer551_8941 
#1 ·
Hi all,

I have a 2001 Suzuki Quadmaster ltf500 4x4.

It starts and idles great but when I give it more than quarter it half throttle it splutters and begins to die and sometimes backfires.

I have cleaned the carb with no change. I also checked the vacuum seal and it has no rips looks good.

I have checked valves and they are all in tollarance.

I have pulled the spark plug and it is dry and sooty unsure what that means.

Please help I can't think of anything. Thanks all.

Chris
 
#2 ·
I have a 1998 Quadrunner 500 and it had the same problem and I discovered that there were holes in diaphragm in the carburetor. I rebuilt the carburetor and it runs like normal again.
 
#3 ·
I had that same issue with my 2001 Quadrunner for the longest time I was chasing what I believed to be a fuel issue, turned out it was the voltage regulator not producing enough power to supply the ignition system. I believe it went bad because of having to much turned on at once like heated grips and thumb throttle along with lights and running the winch plowing snow.
 
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