American Cars
Oil and Oil Filters
Head Gaskets and Valve Covers
Air Filters and Intake Manifolds

What would cause the exhaust valves to stay open after changing the head gaskets intake and exhaust push tubes are in correct location and gasket head is same thickness?


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As you don't say which vehicle all I can suggest is that your motor may be fitted with Hydraulic lifters If so these need to be collapsed prior to refitting If they are not collapsed they will Jack up and cause the valves to remain open I hope this post helps a little Best wishes