slant 6 troubles

Chief, ever seen a motor run with a bad exhaust lobe? It pops out the carb when it happens. The pressure in the cylinder has to go somewhere and if it can't go out the exhaust because the exhaust valve won't open it goes out the intake valve which opens right after the exhaust closes or at least is supposed to close. Seen it plenty of times and just replaced a camshaft in and '85 Jeep Cherokee last month because of this same problem, flat exhaust lobe, popping back thru the carb. I can't say for sure that this is her problem because I am not there but popping back thru the intake and carb are symptom of a flat exhaust lobe.

Chuck