Popping on Decel Questions

4 replies to this topic
  • RCH_VisualMedia

Posted January 20, 2005 - 05:57 PM


I know popping on decel is caused by it being lean, but I was also wondering about if using a blend of 110 and 91 could cause it to do it more?


  • Chills

Posted January 20, 2005 - 07:34 PM


Good Question....My Experience in running different octanes is that the higher the octane, the hotter the engine runs....I have never experienced using anything higher than super unleaded from the pump....

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  • mikev7

Posted January 21, 2005 - 12:51 AM


I don't think so, but i'm no pro either. Maybe you need to go up on your "jet needle" one clip to richen it up and maybe about 3/4 turn on your fuel/pilot screw.

  • grayracer513

Posted January 21, 2005 - 09:53 AM


There are 2 common causes of decel popping. One is lean idle mixture. (although, I've seen people say that they had too-rich conditions cause it too, but they were very over-rich)

The second is an air leak in the exhaust system. Check the mid-pipe joint and the seal at the head. It's simple. There is normally some fuel running through the exhaust on decel, and it's already hot. All you need is a little air. :cry:

  • Bob_o

Posted January 23, 2005 - 05:39 PM


I experianced this before and it turned out to be bits of grass/dirt clogging the air jets on the airbox side of the intake.

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