167 psi compression i i seem to remember that the plugs were wet after it tryed to start once or twice. thanks for all the advice. can one bad injector flood out the whole intake? i see the switch on my 77 450sl but not the 84 i wll look at the manual and see if it may have one in the trunck or else where. flooded intake sounds like what we have and many thanks for you and all the guys.