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Old 04-01-2012 | 02:03 AM
  #2402  
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Lille-bror
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Joined: Jul 2009
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From: Frederikshavn, Denmark
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Originally Posted by Diff Balls
Hey guys, I need some input.....I am having a bit of problems with the idle on a 21-4BTT. It only has a gallon, maybe a bit less on it. The idle is rich and when I lean it out, it goes from rich to pinging. I can't get it just right. I have a 21-4C Team, and I can get it perfect.

I have replaced the glow plug and went that route....I don't think that is the issue.

Any ideas? Do i just need to run it rich and let it break in more maybe?
Hi.

Maybe its the combustion chamber. I had an issue with a Plus4 with the same "lean" idle sound. Monty suggested me to change the combustion chamber, and that was the fault.

What plug, pipe, header, fule etc are you running?
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