they are technically adjusters not true lifters. and i think if they dont go down they are working as designed. the oil pressure supports them and brings them up under the ends of the rockers to keep just the right amount of pressure on the rocker so that it doesnt rattle.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.