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Having had the benefit of advice from Marc and Piledriver on sorting my fuel injection woes, I was wandering if I could have some tips on adjusting the airflow meter (Valves and timing have been set). I have a Gunson CO2 meter which is giving a reading of 2.3. I think it may have been adjusted in teh past to take account of a leaking deceleration valve). My question is should I leave well enough alone or attempt to adjust it, given no great expertise and the level of equipment available.

Gunson, now there's a name I haven't heard in ages. Lost my colortune some years ago, and never got around to buying another. Cool to play with, that thing.

There's a trim screw (I think it's an allen head socket) on the air flow meter you can use to adjust the enrichment. Try that first but also check the usual stuff (valves, timing, etc.).