1986 Formula w/twin 5.7 350 GM eninges. First time in the water this year the engine started hard and was missing and popping also shooting water from one freeze plug that i could see. I replaced free plug and started again, still missing and popping real bad through carb, could this be a vacum problem? Does anybody know how many freeze plugs a 5.7 V8 should have and where they are located? If valves are sticking would it couse missing and popping throug carb and what can I do about it?
Thanks for any help.
Thanks for any help.