6. CYLINDER HEAD/VALVES DOWNTOWN 125i
INSPECTION
Camshaft
Inspect camshaft lobes for
pitting/scratches/blue discoloration.
If any defects are found, replace the camshaft
with a new one, then inspect lubrication Camshaft Bearings
system.
Check each camshaft bearing for play or
damage. Replace the camshaft assembly with
a new one if the bearings are noisy or have
excessive play.
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