Quote:
Originally Posted by eschaider
The cause of your failure is in the first picture. The pushrod cup in the rocker arm broke. The pushrod ate itself up grinding against the sharp edge of the broken cup while the rocker flopped left and right dinging the roller tip end against the spring retainer on both sides of the tip.
Replace the rocker, pushrod and use that new roller lifter you just bought to replace the old one, just to be safe.
Ed
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I would say the pushrod cup seat has been starving for
oil.
Many of this type of rocker system does not have continuous
oil flow.
The cup and pushrod tip have pounded themselves away, the rocker has increased it's rocker ratio, and possibly driven the valve to coil bind, allowing for the increased valve clearance.
I would be looking at replacing any/all of the pushrods and rockers.
I would also run the engine with the valve covers off checking for
oil flow after reassembly. And do as olddog above has mentioned about flushing the engine.
Gary