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How do you adjust valves in 5.7 liter boat engine when factory setting ie zero lash plus one turn leaves valves open or too tight?

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Wiki User
2009-06-29 00:20:19

The way you explain it it sounds like your engine has hydrolic

lifters. With these I have always tightened the rockers until the

pushrod gets hard to spin and wont move up or down and then ONE

HALF TURN not a full turn. The valves might open but within a

minute or so should close. This is cause by the lifter bleeding off

leftover oil in it. Hope this helps.


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