Si0775
New Member
Assistance required! I have a 2011 Mercedes C180 Blue Efficiency (the M271) and back in January the timing chain tensioner let go, throwing the timing out (timing chain was still in tact) and subsequently all 16 valves were bent.
We removed the cylinder head, replaced the valves, refitted and then replaced the timing chain (full kit), which included two new camshaft adjusters, and the adjuster solenoids, both chains and all associated guides and tensioner.
The car ran for 10 days until break down occurred again. We discovered that, when lining up the timing marks at TDC, and then rotating the engine manually through a full cycle, that (when back at TDC) the exhaust camshaft and camshaft adjuster were aligned as they should be. However the Inlet adjuster on the front side of the engine appeared to line up, but the camshaft itself was approx 30-40 degrees out, and subsequently has bent all of the inlet valves again. Photos included to show the front of both adjusters, the inlet adjuster not in line, and the exhaust adjuster where it should be.
I am assuming that, as both adjusters were aftermarket parts, it is the adjuster that has failed to cause this issue? Or am I missing something here? On this occasion all of the rockers appear to be in tact, and no damage can be seen to the camshafts themselves either.
Any input is greatly appreciated.
We removed the cylinder head, replaced the valves, refitted and then replaced the timing chain (full kit), which included two new camshaft adjusters, and the adjuster solenoids, both chains and all associated guides and tensioner.
The car ran for 10 days until break down occurred again. We discovered that, when lining up the timing marks at TDC, and then rotating the engine manually through a full cycle, that (when back at TDC) the exhaust camshaft and camshaft adjuster were aligned as they should be. However the Inlet adjuster on the front side of the engine appeared to line up, but the camshaft itself was approx 30-40 degrees out, and subsequently has bent all of the inlet valves again. Photos included to show the front of both adjusters, the inlet adjuster not in line, and the exhaust adjuster where it should be.
I am assuming that, as both adjusters were aftermarket parts, it is the adjuster that has failed to cause this issue? Or am I missing something here? On this occasion all of the rockers appear to be in tact, and no damage can be seen to the camshafts themselves either.
Any input is greatly appreciated.
