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I recently got my project bike running, an '81 SH. Seems to be running great but there is a 'tapping' noise coming from the vacuum advance/ pick up coil assembly. I can put my finger on the assembly and stop the tapping (sounds like it's 'bottoming out'). Since there is no way to adjust the timing (and it doesn't have a 'timing module') would it help to try installing a module from an earlier model (assuming it would fit)? I replaced the vacuum line, no change. Just seems to be too much travel of the vacuum advance unit/ pick up assembly.
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Check first to make sure the vacuum line is connected to the #2 carb BODY and not to the carb rubber boot fitting.2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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Bingo! I feel like a total rookie now!
Was in too much of a hurry when putting it back together. Should have known better (having a '79 SF for thirty years)! Thanks Phil!! Have a great day!
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You're welcome, glad it was something simple.2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
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