Re: Carburetor Synchronizing
Posted by RodneyCB750K1979 on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Carburetor-Synchronizing-tp4044371p4044465.html
Problem fixed.
I removed the carbs and found when the #2 carb throttle plate was closed, the #4 was not seated. This explains the inability to lower the idle rpm and why the rpm would drop when I pressed the throttle linkage. I loosed each pair of throttle plate screws to allow the plates to adjust and seat. I then removed each screw one by one and applied Thread Lock Blue. After tightening all the screws, I punch marked each screw tip for added assurance they don't back out and get ingested. I then proceeded to adjust the idle mixture using a Heathkit exhaust analyzer and then synchorized the carbs. I can now idle the engine as low as I want. Thanks Icerigger for the advice. I tried loosening the carb rail screws but I couldn't access all of them with the carbs mounted. Since I had the carbs off, I chose to loosen the throttle plate screws.
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Carburetor-Synchronizing-tp4044371p4044465.html
Problem fixed.
I removed the carbs and found when the #2 carb throttle plate was closed, the #4 was not seated. This explains the inability to lower the idle rpm and why the rpm would drop when I pressed the throttle linkage. I loosed each pair of throttle plate screws to allow the plates to adjust and seat. I then removed each screw one by one and applied Thread Lock Blue. After tightening all the screws, I punch marked each screw tip for added assurance they don't back out and get ingested. I then proceeded to adjust the idle mixture using a Heathkit exhaust analyzer and then synchorized the carbs. I can now idle the engine as low as I want. Thanks Icerigger for the advice. I tried loosening the carb rail screws but I couldn't access all of them with the carbs mounted. Since I had the carbs off, I chose to loosen the throttle plate screws.
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