Date registered: Jan 2006
Vehicle: SL500 (R129), 500 SEC (W126)
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
M113 V8, noisy, timing chain?
Currently showing 142k miles
I have just fired up my SL500 and it started dreadfully. At first it didn't run on all 8 cylinders, some smoke/steam came from under the bonnet, and it runs with a loud and fast clack, clack, clack from the front of the engine, both sides.
The car has never done this before and I would have noticed the noise previously. The car was last run yesterday (albeit only from my yard into the garage, perhaps 20yards at most) and before that was driven at length the previous day.
The car is very well serviced (Mobil 1 oil changes ahead of scheduled intervals, just had second set of new MB cats, obsessive servicing) and generally does long journeys in free-ish traffic (30miles plus would be the average journey length).
Any ideas what this clack, clack, clack could be? Timing chain at this age? I thought these M113 motors were unburstable. Should I drive it to my mechanic (25miles)??
Thanks for your help.
'99 SL 500
'93 E300 D T