While searching for causes for mileage being down from ~ 45-46 to 40-42
I noticed gas weakly spraying from the bottom port of #3 Vacuum piston at idle, the diaphragm has no visible tears and the float level is correct, the only ports that appear to go to the cover side of the diaphragm seem to be the purge jets. Any ideas what's happening here? Carbs are synched
and compression is within 5# on all cyl. Thanks