Running compression test shows 50 to 60 on the frt three cylinders which included #2. Vacuum at idle Ok and Off idle fluctuates when miss is there. Fuel trim readings are-at idle-lt-12.3 ad st-1.0-to 4.5- 2500rpm-lt-16.5 and st-2.0-to-7.5- cruising-lt and st a... Login to read more.