TSBs

Main Cap Bolts Issue for Acura

Sept. 27, 2021

This bulletin applies to 2008-2014 Acura MDX, 2008-2012 RL, 2014 RLX, 2008-2014 TL and 2010-2013 ZDX vehicles.

This bulletin applies to 2008-2014 Acura MDX, 2008-2012 RL, 2014 RLX, 2008-2014 TL and 2010-2013 ZDX vehicles. Each side of the engine block has four main bearing side bolts that secure the main caps to the outside of the block. Depending on model year, it is possible that not all of the bolt threads were sealed at the factory, so engine oil may travel past the threads and bolt washers, causing an oil leak on either side of the bock. Fortunately, the fix is easy. If evidence of bolt leakage is present, remove the affected bolt(s) and clean the bolt(s) thoroughly. Then apply Hondabond HT Silicone Gasket P/N 08718-0004 to the threads and washer contact surface, reinstall and torque to specification. To ensure a good seal, allow the silicone gasket to dry for at least 24 hours before starting the engine.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

About the Author

Mike Mavrigian | Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.