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Old 10-13-2011, 12:47 PM
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Don`t think you understood what I said. I said base timing should be around 24 degrees, this is base timing at idle. 12 alone is not enough. This is where the vac advance comes in. It seems like knowing how to tune a engine is a lost art as everytime I mention this or someone else It gets looked at like it`s in another language. By trying what I mentioned you got nothing to lose but you have something to gain power and mileage wise. Why does it need vacuum advance at idle? Because idle mixtures and off idle mixtures are lean and lean mixtures burn slower than do richer ones and this is why more advance is needed. Running without it also causes it to run warmer than it would with it.
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