Having problems with your GMC Sierra 1500 ?

When the valve is open is the lifter supposed to be blocking the oil passage?

Posted / edited by AnonymousUser on : 01-06-2020

Answers :

Yes the oil pressure passage is blocked in the lifter when the valve is open, if it wasn't the valve would not open and the lifter would be tapping away instead of running silently as they should
Repair Help & Product Troubleshooting for GMC Sierra 1500

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