i just did a compression test on my b18a1 motor and it says #1-175psi, #2-175psi, #3-150 and #4-175...could my valve seals cause my #3 cylinder to have a low psi and also is 175 psi low for my compression for my LS motor? any help would be appreciated...thanks in advance

 

Time for a rebuild depending on whats causing you to lose compression.

 

so is 175 psi not enough compression for an LS motor?