Throttle body sync help!
O.K., going to sync the throttle bodies. Got the air box off, the crankcase vent blocked and the caps off the vacuum take-off, got the mercury stick hooked up (actually one of the Carbtune no mercury jobs) and . . . got vacuum on #1 and #3 but nothing on #2 and #4. Check the lines connected to #2 and #4 and they work on #1 and #3 so it ain't the guage. What's goin' on here. Tried the air bleed screw on #2 and it doesn't seem to affect the vacuum reading but does make it idle rough.