Quote:
Originally Posted by dpetryk
Sounds like the timing chain ate a plastic rail guide and then the chain jumped out of time and the valves hit the pistons. A standard way of failure for these engines. Expensive to fix at this point.
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That was my first thought also, the plastic rail guide disintegrated or broke.
It ought not to have happened at just 64,000 miles, but then 21 years without having had it changed is a LOOOOOONG time on the original one.
Mileage and time causes the original ones which are white, to become root beer brown, and over time and mileage they develop hairline or big cracks, and eventually they let go. There is no set way to tell, on the 560, it varies engine to engine, but the best bet is to change them along with the chain and tensioner at 100,000 miles (typically driven in 10-12 years)
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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...
1995 E 420, 170k "The Red Plum" (sold)
2015 BMW 535i xdrive awd
Stage 1 DINAN, 6k, <----364 hp
1967 Mercury Cougar, 49k
2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive
(sold)