I have had it for about 3 years with absolutely no problems up until about a week ago. I rode it around close to the house off and on for a week or so, still no problems. Then I took a longer ride, was probably about 20 miles into it when while going up a small hill, it suddenly began to sputter, backfired and died. I could not find anything obvious wrong, tried to run it a few times with the same symptoms. I began walking, changed my mind, fired it up and was able to limp about 7 miles to a snow park where I got a ride home.
So first I changed the fuel filter and put in some fuel system dryer, I had went through some deep powder a few miles before the problem and thought I might have sucked some snow into the carbs..the 'Cat has those infamous loose sealing airbox side carb boots. Still no change.
So I decided to pull and drain the tank, and pull and clean the carbs. Didn't find any issues with the tank (other than there was only about a gallon of fuel in it) I thought, "There's the problem, it was low on fuel so it made sense that the problem first arose while going up a hill), plus my fuel gauge was broken. The carbs were not bad, no plugged jets, just a bit of gunk in the bottom, and bought a new fuel gauge.
So, I figured it should run good now right? No, I put 3 gallons of fresh fuel, fired it up (starts easily) and the problem is still there. It idles fine and when I open it up it takes off fine, but when I back off from full throttle to mid, it sputters and wants to die, seems to get worse the longer it runs.
My thoughts are that it's either starving for fuel or it has an electrical problem.
So first I changed the fuel filter and put in some fuel system dryer, I had went through some deep powder a few miles before the problem and thought I might have sucked some snow into the carbs..the 'Cat has those infamous loose sealing airbox side carb boots. Still no change.
So I decided to pull and drain the tank, and pull and clean the carbs. Didn't find any issues with the tank (other than there was only about a gallon of fuel in it) I thought, "There's the problem, it was low on fuel so it made sense that the problem first arose while going up a hill), plus my fuel gauge was broken. The carbs were not bad, no plugged jets, just a bit of gunk in the bottom, and bought a new fuel gauge.
So, I figured it should run good now right? No, I put 3 gallons of fresh fuel, fired it up (starts easily) and the problem is still there. It idles fine and when I open it up it takes off fine, but when I back off from full throttle to mid, it sputters and wants to die, seems to get worse the longer it runs.
My thoughts are that it's either starving for fuel or it has an electrical problem.
1998 ZL500 power loss-missing
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