Phizinza Posted August 22, 2005 Share Posted August 22, 2005 I changed the spark plugs the other day and noticed they were rather dark and had small buildups. Not enough to do damage, but enough to say I'm running a little rich. I found the screws but not sure how much or which way to turn them. Logic tells me I should screw them in (screw in like a tape makes gap inside smaller and less fuel flow.) So, How far should I go? (Keeping in mind its not running rich enough to damage the plugs.) And am I right about the direction? Thanks people. Quote Link to comment Share on other sites More sharing options...
galopagus Posted August 22, 2005 Share Posted August 22, 2005 I changed the spark plugs the other day and noticed they were rather dark and had small buildups. Not enough to do damage, but enough to say I'm running a little rich. I found the screws but not sure how much or which way to turn them. Logic tells me I should screw them in (screw in like a tape makes gap inside smaller and less fuel flow.) So, How far should I go? (Keeping in mind its not running rich enough to damage the plugs.) And am I right about the direction? Thanks people. The screw is basicly a small air port and uses a needle to open or block a hole accordingly. More air is lean and less air means it has to suck more fuel and therefor rich. turning in (clockwise) lessens the air flow and richens so you should turn counterclockwise. Quote Link to comment Share on other sites More sharing options...
NorthWet Posted August 22, 2005 Share Posted August 22, 2005 Emissions-era carbs tend to have the "reverse"-mixture screws that galopagus described. The bad news is that just effects the idle mixture. Make sure that the carb(s?) is clean (especially the air bleeds in the air horn) and that the float-vavle is properly set. Also, is this a (are these?) feedback carb(s)? Without the feedback working, the mixture will be slightly rich. Quote Link to comment Share on other sites More sharing options...
Camelwagon Posted August 24, 2005 Share Posted August 24, 2005 Yikes so now I'm confused, which way to turn to lean? How do i find out which carb I have? Quote Link to comment Share on other sites More sharing options...
Phizinza Posted August 26, 2005 Author Share Posted August 26, 2005 Sorry, but I can't help. I'm just going to stick with, it works, leave it alone. It would be good to find a manual for the carbies I got, but how to find out what carb they are is beond me. Quote Link to comment Share on other sites More sharing options...
Camelwagon Posted August 26, 2005 Share Posted August 26, 2005 Well seems like my carb needs rebuilt, had it checked and i'm not getting enough fuel in there, its running lean either way I turn the mixture screw, doesnt change much. Very weird. Not sure if he's right or wat but he showed me on his emissions computer, he turned the screw from all the way left to all the way right and the HC's were really high either way. Quote Link to comment Share on other sites More sharing options...
Phizinza Posted August 27, 2005 Author Share Posted August 27, 2005 remember that the screw is most likely just an idle mixture screw. Quote Link to comment Share on other sites More sharing options...
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