Hey guys - finally went ahead a did a “rebuild” on my 2f carb. The float valve was sticking amongst other things. I put carb back on and similar symptoms - idle fuel pulling through Venturi. I read in the forum to blow out the idle circuit, likely blocked (with compressed air and carb cleaner). I took the solenoid out, blew; idle mixture screw, blew; and vacuum line out to dizzy. All I can say is WOW. What a huge difference.
Now my issue is this. I can rotate out the idle mixture screw and achieve 20” of vacuum (sea level) but I cannot get the RPMs (850) down to say 675 (note: measuring using a small engine wire wrap tach) by adjusting the idle speed out. I took a look at the timing and don’t see the BB. So I’m thinking I may need to retard the timing to get on the BB and then perhaps that will settle down the carb? We are shooting for max vacuum at 650rpms, +\- 50 correct?? Please provide suggestions here. I’ll tackle timing after rain threat.
Now my issue is this. I can rotate out the idle mixture screw and achieve 20” of vacuum (sea level) but I cannot get the RPMs (850) down to say 675 (note: measuring using a small engine wire wrap tach) by adjusting the idle speed out. I took a look at the timing and don’t see the BB. So I’m thinking I may need to retard the timing to get on the BB and then perhaps that will settle down the carb? We are shooting for max vacuum at 650rpms, +\- 50 correct?? Please provide suggestions here. I’ll tackle timing after rain threat.
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