yz426f 02-Sputtering low-mid throttle, throttle sticking?help


1 reply to this topic
  • SDWSVT

Posted April 03, 2013 - 04:55 PM

#1

My bike is a YZ426F 2002- I just had my valves adjusted and my bike had more power than ever..prior to the valve adjustment there was a slight sputter at lower throttle and then when I would let off of the throttle it would sputter as well..after valve adjustment as I stated prior, the bike has tons of power. Last ride, (sea level desert Ocotillo Wells) I was getting a real bad sputtering and popping on low-mid throttle (worse than before the valve adjustment), when I would twist to full throttle bike still has a ton of power...carb?? any suggestions where to start? any help or advice would be much appreciated..

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  • slothman

Posted April 04, 2013 - 09:39 AM

#2

Jets are clogged. It's popping because it's running too lean. Clean the jets and report back.

My bike is a YZ426F 2002- I just had my valves adjusted and my bike had more power than ever..prior to the valve adjustment there was a slight sputter at lower throttle and then when I would let off of the throttle it would sputter as well..after valve adjustment as I stated prior, the bike has tons of power. Last ride, (sea level desert Ocotillo Wells) I was getting a real bad sputtering and popping on low-mid throttle (worse than before the valve adjustment), when I would twist to full throttle bike still has a ton of power...carb?? any suggestions where to start? any help or advice would be much appreciated..







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