If you're experiencing engine noise that you suspect is related to the lifters, the problem is likely *not* a need for adjustment, but rather one of these issues:
* Low oil pressure: Check your oil level and pressure. Low oil pressure can starve the lifters and cause noise.
* Worn lifters: Hydraulic lifters can wear out and fail, requiring replacement. This often presents as a ticking or tapping noise.
* Worn camshaft lobes: A worn camshaft can also cause lifter noise.
* Collapsing lifters: In some cases, a lifter may be collapsing internally due to age or contamination.
* Incorrect oil: Using the wrong viscosity oil can also contribute to lifter noise.
Before you start replacing parts, diagnose the root cause. A mechanic with experience in these engines can help pinpoint the problem. Simply adding oil or trying to "adjust" something that doesn't require it could lead to further damage and unnecessary expense.
