Ford Rejects FA-4 at This Time and Needs to See More on CK-4 JobbersWorld 10 years ago Ford Rejects FA-4 at This Time and Needs to See More on CK-4 Ford rejects FA-4 at this time and recommends continuing use of CJ-4.Stay tuned! More to come on how Ford’s position could impact the transition from CJ to CK. See below for Ford’s position on CK-4 and FA-4