Poor idle quality due to oil feed tubes falling into crankcase on Mercedes-Benz 400SE

Problem Description and Possible Solution
Oil feed tubes break and fall into the crankcase (engine) and the tappet becomes noisy (ticking), resulting in degraded idle quality. Our technicians recommend replacing all of the tubes at the same time, broken or not.
Problem Data
RepairPal Verified
Average mileage: 65,000 (65,000–65,000)
1 model year affected: 1992
2 people reported this problem
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Horrible ticking and shaking