I don't remember the GM make. It could have been a Chevy station wagon or a Pontiac back in circa 1982. The car was probably a about a 1975-77. A grad student did not know which cylinder was misfiring or which bank so I selectively removed each plug wire and replaced it. I told him which bank (left) and which cylinder.
The stamped rocker had slipped off the valve tip and had rounded it at a slant so it would not stay on. It could also have been a bent push rod or loose stud or even stuck valve. He had to pull the head and replace the valve. I did not follow up as to the cause. Up to that time I had never seen an engine that had no rocker arm shaft.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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