Arctic Car 454 Running Way Too Rich(?) Won't Throttle Up- Please Help!
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Arctic Car 454 Running Way Too Rich(?) Won't Throttle Up- Please Help!
I've got a 1998 454 Arctic Cat 4x4 that had gas in the water. I drained, cleaned and refilled the tank. I took the carburetor apart, cleaned every passage, replaced jets and needles, checked float level and checked the diaphragm for holes. I reinstalled everything and started it up. It purrs like a kitten on idle. When you give it gas, though, it will pop, back fire, stutter and either generally runs like crap or dies I assume that it is running rich - the spark plug is black with carbon after just a minute or two of running. I went through the carburetor again, three times, swapping jets (there were three different sizes in the kit) and wound up putting the old jets back in. I have moved the main jet needle e-ring up and down. I adjusted the float. I disconnected the exhaust (to eliminate that, even though you can feel pressure coming through). I have tried two aftermarket carburetors. I am at my wits end and out of ideas. Please tell me someone else knows what is wrong here...
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