Article 1994 - Spark Plug Usage

TSB #126 - November 7, 1969
1968-70 and Econoline 1969-70 - (All With 302, 360, 390 CID Engine)


The change to BF-42 spark plugs on Car engines does not apply to Light truck engines. Due to heavier load requirements of Truck engines, the BF-32 or BTF-31 plugs are required for correct performance and durability. Indiscriminate changing of spark plugs from BF-32 to BF-42 on Light trucks could result in engine damage. Under conditions of extended idle periods with subsequent fouling, the BF-42 may be substituted to obtain customer satisfaction.

PRODUCTION CORRECTION: None
WARRANTY STATUS:
INFORMATION ONLY

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