I own a 420 SE (1989) with 310000 kms. Since quite some time now I can
hear a ticking noise coming from the engine when I accelerate: it
becomes louder when accelerating and it’s hardly audible as soon as I
With the engine idling, I hear a ticking noise at both sides coming from
beneath the black covers.
Uptill now I had the following parts replaced:
-16 rockers (cam levers)
-spark plug wires and boot
-gaskets inlet manifolds
What else should be replaced/repaired to get rid of this ticking noise??
Or is it just simply a question of a bad ignition timing that sets off
Please let me know something if you recognize this problem…..
Thanks in advance,