Engine Piston - Knock/Scuff Condition: Overview
87ford14Number: 021987
Februrary 19, 1987
All Ford and Lincoln Mercury Dealers
Subject: Piston Knock/Scuff Condition During Vehicle Warranty - 1986-87 Taurus/Sable/Aerostar Equipped with a 3.0L Engine
Important Service Information! Please Forward To Your Service Manager Immediately!
Some reports of piston knocking are being received on 1986 and 1987 model Taurus and Aerostar vehicles equipped with a 3.0L engine from dealers on the Engine Concern Definition Program. The piston related knock is the result of piston scuffing.
If the knock condition is verified after conducting the diagnostic test outlined in the attached procedure, the engine assembly should be replaced rather than attempt normal service repairs. This will assure complete customer satisfaction to the customer upon his service visit. Vehicles are to be serviced within the guidelines of the new vehicle warranty.
Replacement engines can be obtained by calling the Lima Engine Plant toll free phone number. Diagnostic and warranty procedures are included in Attachment I.
Call your Ford Parts and Service District Office if any difficulties are encountered with this program.
Forward this information to your Service Manager immediately!