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XLsior · 02-04-2021, 10:53 PM

valve lash tick is normal when running. Will be more noticeable on a cold engine. as the engine gets to operating temp the tolerances will tighten up as the metal expands and oil becomes less viscous. or is that the other way around, i might be getting confused with diesel fuel injectors...

As for adjusting valve lash as long as the valve is off* cam then its ok to adjust. If you can wiggle the valve adjuster and make it click then its reasonably safe to adjust. The only time of concern is if the lash adjustment is tight throughout the entire crank revolution ergo its over tight so back off adjustment. Ignition timing requires the TDC on the compression stroke...

If you don't have a set of feeler gauges that a standard double side razor blade is about .004 some people use business cards at a pinch but even I have my tolerances for shade tree mechanics.

02-04-2021, 10:53 PM	#4
XLsior Join Date: Aug 2020 Location: Australia Posts: 1,300	valve lash tick is normal when running. Will be more noticeable on a cold engine. as the engine gets to operating temp the tolerances will tighten up as the metal expands and oil becomes less viscous. or is that the other way around, i might be getting confused with diesel fuel injectors... As for adjusting valve lash as long as the valve is off* cam then its ok to adjust. If you can wiggle the valve adjuster and make it click then its reasonably safe to adjust. The only time of concern is if the lash adjustment is tight throughout the entire crank revolution ergo its over tight so back off adjustment. Ignition timing requires the TDC on the compression stroke... If you don't have a set of feeler gauges that a standard double side razor blade is about .004 some people use business cards at a pinch but even I have my tolerances for shade tree mechanics. Last edited by XLsior; 02-05-2021 at 06:59 PM.
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