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-   -   4.0 L Valves (https://www.wranglerforum.com/f290/4-0-l-valves-67821.html)

45 ACP 11-05-2010 01:43 PM

4.0 L Valves
 
I have a 1991 YJ with a 4.0L six cylinder. Does anyone know if the valves are adjustable?

Garyk 11-05-2010 05:11 PM

They are hydraulic, no adjustment, but rockers must be torqued to specific ftlbs. If you have a few loud ones, check your rockers for wear, might have a dry lifter also


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