Home › Forum › Ask A Member › 64 Johnson 5.5 hp Powerhead Base Gasket Problem › Reply To: 64 Johnson 5.5 hp Powerhead Base Gasket Problem
June 22, 2020 at 5:38 pm
#206435
do a compression test on each cyl.
0 compression usually means a busted gasket or lob sided readings like 80 40
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