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Old 05-19-2010, 08:23 PM   #7
Retro Jim
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Join Date: May 2010
Location: Abbottstown , Pa.
Posts: 194
Default Re: 312 Y-block valve lash problems

I have to agree with the others on this one . There is a good change the adjuster nut is bad so replace with a new locking nut plus while you have the valve cover off that would also be a good time to remove the rocker assembly and examine that very well for any problems .
My guess it a bad rocker adjusting nut ! You can also add some Blue lock tight on the threads too .

Jim
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