Engine - Unusual Noise From L/H Cylinder Head Area
NUMBER: 02-117-11RDATE: 11/18/11
*REVISED:* 04/10/12
APPLICABILITY:
2011MY Forester 2.5L N/A
SUBJECT:
Cylinder Head, Left Side
INTRODUCTION
When diagnosing an engine for an unusual sound and its determined to be coming from the left side cylinder head area, the cylinder head, intake camshaft, intake valves and rocker arm pivots may need to be replaced. The sound could be heard at idle and increases with rpm. The best way to describe the sound is that of a sewing machine.
This sound is created by the contact of the pivot and the rocker arm when the intake valve is coming to seat. The sound is non-detrimental and has no effect on the reliability and durability of the engine.
COUNTERMEASURE IN PRODUCTION
The modified cylinder head, intake camshaft, intake valves and rocker arm pivots were incorporated into production on January 17, 2011 starting with engine number 0055031.
PART INFORMATION
REPAIR PROCEDURE/INFORMATION
For the repair procedure, refer to the applicable Subaru Service Manual.
WARRANTY/CLAIM INFORMATION
For claim information, refer to Subaru Warranty Wizard(R).
Disclaimer