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mooney265 mooney265 is offline
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Join Date: Sep 2008
Location: New Orleans
Posts: 1,365
my guess is you are too lean when attempting to accelerate while engine is cold. It's very hard to geta happy medium when these engines are cold.

I have wideband afr and when cold my engine idles at 11 afr. Any leanee and it will sputter under accel. I begin to missfire at 15.9 afr.

How does it run when warm?
LIVN80S - - Red '79 Porsche 930 Steel Slant Nose Conversion [in 1987] w. 46k miles 3.3L; 964 Cams; K27HF @ 1.0 BAR, with Garrettson Intercooler; Rarly Zork; CIS Flowtech Fuel Head & BL-WUR.
Old 12-10-2011, 09:29 AM
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