Tri-Cabin Mercruiser engine spark plug gap

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David Kane
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Joined: Thu Oct 25, 2007 4:10 pm
Location: Sandusky, OH

Tri-Cabin Mercruiser engine spark plug gap

Post by David Kane »

I have a '75 tri-cabin with twin Mercruiser 255's. By the serial #'s, these should be GM made engines. Does anybody know what the spark plug gap should be?
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prowlersfish
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Location: Lower Chesapeake Bay ,Va

Post by prowlersfish »

.035"
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat :D
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