2013-2017 Honda Accord 2.4L Cold Start Rattle And Cam Chain Tensioner Repair.

2013-2017 Honda Accord L4 All, 2015-2017 Honda CR-V All, Cam Chain Tensioner repair!! Earth Dreams engine, Honda Bulletin: TSB 19-019
Honda TSB 19-019

2013-2014 is listed in the TSB 14-030

Make: Honda
Number: 19-019
Date: 2/21/2019
Title: Knocking or Clicking From Engine During Cold Startup

Models:
2014-2017 Accord EX
2014-2017 Accord EX-L
2014-2015 Accord Hybrid
2017 Accord Hybrid
2014-2015 Accord Hybrid EX-L
2017 Accord Hybrid EX-L
2014-2015 Accord Hybrid Touring
2017 Accord Hybrid Touring
2014-2017 Accord LX
2014-2017 Accord LX-S
2014 Accord Plug-In
2014-2017 Accord Sport
2017 Accord Sport Special Edition
2014-2017 Accord Touring

Summary:
There is a knocking or clicking from the engine during cold startup. The check valve in the cam chain tensioner is worn, allowing oil pressure to leak internally and the cam chain to lose tension after engine is turned off. Replace the cam chain auto-tensioner.