Yeah maybe the booster, wife said the noise was coming from the front. So I turned it over with the key for 5 or so strokes and the best I got was 90 on the gauge (not good, I understand 120 & above is about norm). Retested a couple times and still 90. That was on the questionable cylinder that had the low header temp reading. So I'm going to put new plugs in anyway all around and check each cylinder while I'm at it.