190e 2.3 #2 & #4 cylinders no compression
 

My 1988 190 has no as in 0.00 compression on 2 & 4 . 1 & 3 are identical at 170lbs. valve timing is on the money .I put oil into each cylinder after the test they all held it.BTW its an 8-valve head.I really need some advice.new head or new motor?

Time to remove the cylinder head & inspect for blown gasket OR burnt valves!