Engine - Spark Knock
86ford22 Article No. 86-4-19SPARK KNOCK - 2.3L EFI TURBO
FORD 1985-86 THUNDERBIRD
LINCOLN-MERCURY 1985-86 COUGAR
CALIBRATIONS: 5-06E-R0, 5-06E-R10, 6-06E-R01
WARNING: This modification is authorized only for the listed engines. Performing this modification on other engine calibrations is unauthorized and could create liability under applicable federal or local laws.
Spark knock, which occurs under the following drive modes may be corrected with the service procedure.
^ On tip-in acceleration.
^ During hard accelerations (with or without cruise control on).
^ Under highway cruise 40-55 mph.
Service Procedure
1. Attempt the use of a different brand of fuel.
2. Check that the specified coolant level is maintained.
3. Check that the initial timing is set to specifications.
4. If, after checking the above, the spark knock still persists, reset the initial timing from 10~ to 7~ BTDC.
Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.
OTHER APPLICABLE ARTICLES: 85-6-11
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP12127A86
TIME: 0.5 Hr. DLR. CODING: Basic Part No. 12127 - Code: M7