I pulled my plugs today and noticed the 2 front ones on each side have a reddish color and the rear 2 on each side look brand new (approx. 6000 miles).
It appears to me that the back cylinders are not getting much gas which brings me to the question "are my secondarys working?" It a Holly 750 with vacuum secondary. The diaphram will hold a suction. If I blow compressed air over the little hole in secondary ventura it should open throdle but it doesn't. Any one had this problem?
Bob