tappet noise on 1990 Cadillac Eldorado

Engine has a loud tappet noise on right side. I am trying to find out how to adjust the valves to see if the noise goes away.

by in Bakersfield, CA on May 01, 2010
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1 answer
ANSWER by , July 09, 2011
check your ignition coils, thats what the noise was on my 95 eldorado