Base Engine Misfire with Abnormal Valve Train Noise

WARNING: This page is about a different variant/trim than selected.

Condition	Action
Loose, worn or damaged rocker arm	Inspect valve rocker arm and rocker arm shaft. Repair or replace all damaged components.
Loose valve rocker arm attachments	Inspect valve rocker arm and rocker arm shaft. Repair or replace all damaged components.
Worn or damaged pushrods	Inspect the pushrods for excessive wear. Inspect the pushrods for bent condition. Inspect the pushrods for broken tip. Replace pushrod if any damage is found.
Broken valve springs	Inspect valve springs. Repair or replace all damaged components.
Worn and/or damaged valve rotator	Inspect valve rotators. Repair or replace all damaged components.
Sticking valve	Carbon on the valve stem or valve seat may cause the valve to stick. Inspect valves and valve guides. Repair or replace all damaged components.
Worn or faulty camshaft lobes	Inspect camshaft lobes. If damaged replace camshaft and all lifters.
Excessive valve lash	Check the valve lash adjustment, and correct if above specifications. Repair or replace all damaged components.