View single post by Jensen Healey
 Posted: 04-05-2012 02:57 pm
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Jensen Healey



Joined: 03-11-2005
Location: San Anselmo, California USA
Posts: 983
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 Hi Bob, The main jet and emulsion tube are not functioning in the 2- 3k range. Your issue is in the idle circuit which operates to around 3000 rpm.

You are correct that the idle jet holder is the likely problem. The 7850.7 Would be my guess also but since the air corrector is what adjusts the air/ fuel mixture to 14.7:1 it must be spot on.

If it turns out the idle jets are the wrong size, the process will need to repeated.

Once the idle circuit is sorted, the main circuit can be evaluated. The 160 main jet seems quite large for this engine.

Kurt