Timing question
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Senior User
Joined: Aug 2012
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From: Phoenix
Timing question
Please forgive my ignorance brothers, but should my timing advance change when I hook my vacuum line back up. I've had it two ways and need clarification. When I time it at 6 degrees with the idle screw backed out a bit, the timing stayed the same when the vacuum line was hooked back. There also seemed to be a faint knock to the engine. With the idle stop screw in all the way, and no knock what so ever, the timing runs up to about 12-14 when the vacuum line is hooked up. Which way is right?
I thank you all for any knowledge you can give this uneducated newbie.
I thank you all for any knowledge you can give this uneducated newbie.
Hotshot
Joined: Jan 2007
Posts: 11,564
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From: Tucson
yes it should advance when your rpm goes up, and 12 to 14 degrees sounds about right. just confused about the idle screw.... are you talking about the fuel-air mixture screw on the base plate of the carb? or the idle screw on the carb linkage?
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Joined: Aug 2012
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From: Phoenix
I meant the idle stop screw on the throttle linkage. I believe the air/fuel mix screw is good, but in my lack of confident knowledge I have been struggling getting everything set just right. Too rich/too lean... How to tell? I think it's good now
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