torxxx Posted February 7, 2004 Share Posted February 7, 2004 Anyone drill out the mixture screw on a ea82 hitachi? I had to do it to pass I'm and I've messed with the mixture so many times trying to get it to run right, I lost count of how many turns each way..... Does this mixture adjustment effect all fuel flow, or just at an idle? I'm running at stock timing.. 8 degrees and my plug tips are a lil white. Can I advance my timing to say 10 degrees to make up for it being too rich? Quote Link to comment Share on other sites More sharing options...
RickOregon Posted February 7, 2004 Share Posted February 7, 2004 Hey Torxxx, First off, I'm not a Hitachi carb expert or carb expert of any sort, but I was reading in a Haynes manual the other day, and I believe the mixture screw you're talking about is for idle only. Others will correct me, if this is wrong.. However, I think I saw something in there (don't have it handy right now) about adjusting secondary valve based on the angle setting of the primary choke. Maybe I've got it wrong, but I think some adjustment to cruise speed air/fuel mixture can be accomplished using that procedure. I haven't tried it yet, but maybe others have.. For what that's worth, Rick Quote Link to comment Share on other sites More sharing options...
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