Lifters losing pressure.
youll always find glitter in the bottoms as there is no where for it to drain to. Like little buckets. Lifters are not designed to stay pumped forever, the tolerances are just not required for them to do what they are supposed to do.
I remember reading a Johnson hydraulic lifter white paper about how long the lifters take to bleeds down by design. It was like 10-18 seconds! They are not designed to stay pumped for longer periods as their only purpose is to take up the slop of a hydraulic cam. It should take just a few revolutions of a motor to fill the lifters with oil and they automatically pump themselves up to zero lash where they happily stay for the duration of that motors run cycle. No appreciable amount of oil is going to blow past a .00001 tolerance piston in .1 second...at idle. Johnson has found that dirty lifters are by far the most common cause of lifter issues.
youll always find glitter in the bottoms as there is no where for it to drain to. Like little buckets. Lifters are not designed to stay pumped forever, the tolerances are just not required for them to do what they are supposed to do.
I remember reading a Johnson hydraulic lifter white paper about how long the lifters take to bleeds down by design. It was like 10-18 seconds! They are not designed to stay pumped for longer periods as their only purpose is to take up the slop of a hydraulic cam. It should take just a few revolutions of a motor to fill the lifters with oil and they automatically pump themselves up to zero lash where they happily stay for the duration of that motors run cycle. No appreciable amount of oil is going to blow past a .00001 tolerance piston in .1 second...at idle. Johnson has found that dirty lifters are by far the most common cause of lifter issues.
