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Discussion Starter · #1 ·
Hey guys, My 1999 mxz 600 is really bad on gas after a full engine teardown and rebuild. The pipe was also replaced (lots of holes), and the carbs have been gone through and cleaned. This damn thing used a half a tank in only 20 miles.
 

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How did it run? How do the plugs look? Did you check for leaking gas? Your needle and seats could be bad. And it will be pretty clear by the plugs.

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2nd Whore in command
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Im with these guys...........I have a 99 600 and 20 miles to a tank is not even in the realm of a 800......needle and seat sounds like the issue to me?
 

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Did you actually put in 5.5 gallons? Or going off gauge? Maybe the gauge got hung up making you think you used more than you did.
 

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old ski-dool
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My ZX will drop 1/2 tank on the gauge in no time also. Not a real accurate sending unit.

Fill it back up.......bet it only really used a couple of gallons
 

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Discussion Starter · #7 ·
The Sled belongs to my buddy. He said it seems to run on one cylinder at idle and the other will kick in after he gives it some throttle. He also just replaced the choke cable. So im leaning towards the choke cable needing adjusted.
 
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