WEEKLY TECH BULLETINS

Revised Rocker Cover Removal and Installation Procedure for 2008-2020 Mitsubishi 2.4L 4B1 Series Engines

The AERA Technical Committee offers the following information regarding revised rocker cover removal and installation procedure for Mitsubishi 2.4L (4B1 Series Engines). When repairing the upper end of these engines the removal and installation procedure has been changed by Mitsubishi and the old procedure is no longer valid. Use of the new procedure is required to ensure a proper seal. 

Knocking/Clicking Noise on Honda 2.4L K24W1 Engines

The AERA Technical Committee offers the following information regarding knocking/clicking from the engine on cold start-up on 2014-2017 Honda Accords & CR-V vehicles with 2.4L (K24W1) engines. This noise normally occurs upon cold engine start up on Honda Accord & CRV vehicles.

Customers may complain about a knocking/clicking noise on cold start-ups. This may be caused by a worn check valve in the cam chain tensioner. This will allow oil pressure to leak internally and the cam chain to lose tension after the engine is turned off. Replacement of the cam chain auto-tensioner is required to repair the issue.

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