I had a set of hydraulic lifters that wouldn't pass the test, check ball was stuck open. Soaked them for about a month in acetone, ATF, and MMO. They then checked OK, installed them in a rebuilt motor, ran it today, they worked great.
This acetone and whatever-you've-got advice posted all over this board is for real. It worked great. Thanks!
This acetone and whatever-you've-got advice posted all over this board is for real. It worked great. Thanks!