Is the CLS 63 AMG affected by the head bolt issue?
All engines made before this date are affected – engines with serial numbers beyond 569xx 60 060658 have the updated bolts. Unfortunately, the production of the CLS 63 AMG stopped before AMG fixed the head bolt issue.
When to replace head bolts on Mercedes C63?
Aren’t there details of the affected engines’ production codes floating about the interwebs? The head bolts were modified at M156 engine number ending in 60658. The bolts went from female torx fitting to male torx fitting. The correct procedure is to remove the heads and replace the head gaskets.
Why is my Mercedes CLS engine not working?
As the sprockets continue to wear, the engine will develop a rattle from the loose timing chain. All the while, more and more metal is being ground away from the gears. If not fixed, one of the gears may fail eventually and take the engine out (valves hitting the pistons). It is a problem that you should not ignore.
What causes head gasket to leak in Mercedes CLS?
If left untreated, the oil/coolant mix will eventually turn to sludge. Coolant entering the combustion chamber can also cause increased smoking and a rough idle. If any of the bolts holding the cylinder heads break off, a severe head gasket leak may appear.
All engines made before this date are affected – engines with serial numbers beyond 569xx 60 060658 have the updated bolts. Unfortunately, the production of the CLS 63 AMG stopped before AMG fixed the head bolt issue.
Aren’t there details of the affected engines’ production codes floating about the interwebs? The head bolts were modified at M156 engine number ending in 60658. The bolts went from female torx fitting to male torx fitting. The correct procedure is to remove the heads and replace the head gaskets.
Where can I get cylinder head bolts replaced?
For more information about the cylinder head bolts replacement, contact us at 941-922-3600 or click here: https://www.rennhaus.com/contactus In 2009, AMG developed the M159 engine, which is based on the M156 engine, to use in SLS AMG.
If left untreated, the oil/coolant mix will eventually turn to sludge. Coolant entering the combustion chamber can also cause increased smoking and a rough idle. If any of the bolts holding the cylinder heads break off, a severe head gasket leak may appear.