LRMAN
11-03-2009, 03:12 PM
I was working on the timing of my engine today and found the vacuum from the carb is actually retarding the timing while the mechanical is advancing it. Is that correct?
I disconnected the vacuum from both the dist. and the carb and blocked them both. Then I set the timing to 6° BTDC. When I revved the engine I saw the timing advance(pulley mark moved counter clockwise). When I reconnected the vacuum hose the timing retarded below TDC(pulley mark moved clockwise). And moved further clockwise when revved.
I disconnected the vacuum from both the dist. and the carb and blocked them both. Then I set the timing to 6° BTDC. When I revved the engine I saw the timing advance(pulley mark moved counter clockwise). When I reconnected the vacuum hose the timing retarded below TDC(pulley mark moved clockwise). And moved further clockwise when revved.