John ~~ The best way to tell the tale is to run a air test // Put each
cylinder #  on top dead center // you will need a threaded in air test adapter hose
that can be picked up a most of your accredited parts stores // also a air
compressor with regulated air // With cylinder # to be tested at tdc start air at
appox. 30lbs. slowly increasing to about 60lbs you should then be able to
hear where the air is going to // Bad or leaking exhaust valve air will come out
the end of the muffler // Bad Intake valve  - air will come out the intake
system = remove air intake boot and hand open the throttle to test this area //
Rings bad and piston and cylinder wear -- air will go into the crank case -take
off oil fill cap and listen in this area . // also the mating area of the
head and cylinder = head may not be tight //  Ive seen many notches burned in
this realm with compression loss // Listen carefully and you will find your
problem // You can have problems in all the area,s so dont just assume when you
hear air in one realm that you found your problem // Check all 4 above areas to
be sure of all possible leaking areas per cylinder. This test can be used on  6
/ and 8 cylinder engines also  ( Place this test program in your favorites
for future use

A Nice Day To All  ~~ Don @ DVW    Online Catalog www.dvwimportautoparts.com