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Hello Bullit.

Yes, just check it in park. Be sure to disconnect the vacuum advance, if it's connected.

If you reconnect the vacuum advance and the timing advances at idle (assuming it's plugged into ported vacuum, on the passenger side of the primary metering block), that's another clue that the throttle plates are too far open at idle.



Nothing is hooked into my carb except a PCV from both valve covers. I have a T-fitting to accept both hoses from the valve covers and it is routed into the single fitting at the back of the carb. The carb is a mechanical secondary. When I check the timing, Do I just unhook the hose at the back (where both valves run into the carb)? Still waiting on the light but thought to ask about this anyway. Getting ready to go outside and check the A/F screws........