Quote:
Originally posted by hardflex
Question... if you drill out the pilot jets slightly, you can still adjust the idle mixtures with the screws, right?
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Yes, IF there are adjustable idle jets hidden in there. In the early EPA days, some had a fixed idle jet that could not be adjusted. Your pilot jets basically control the mixture from idle up to about 1/4 throttle when the needle and slide take over. Main jet is for 3/4 to full throttle. There is some overlap of course....