JASPER® Invests in Valve Stem Seal Tester
The Ahaus Valve Stem Seal Tester measures how much oil flows past a valve seal. Seals are tested under pressure and vacuum at engine operating temperatures and at various speeds. The job of a valve stem seal is very crucial in the operation of today’s late-model engines. These seals function more like a metered orifice than an actual seal, designed to leak a small amount to lubricate the valve stem and valve guide. It’s a balancing act, too much oil flow past the valve seal, and the engine c...