M111 Timing chain and Cam Gears
I wish i were more mechanically minded...
I was supposed to change the timing chain 2 weeks ago... but didn't due to me needing a vehicle to use.
The reason for the change in timing chain and tensioners etc is due to a noise i get on cold startup which lasts for about 3 seconds. The mileage on my car is 305,000kms (High, i know). The performance, fuel consumption are fine.
Anyway the mechanic tells me that i have to change the cam gears as well. He says this is a common problem on the W203. He did not do an inspection on the cam gears as yet. He says it could have possibly already jumped teeth? The price on the cam gears is (according to him) is R6,000 each ($763 each)!
My questions are:
1. Are the cam gears a common problem on the w203?
2. What is the lifespan of the cam gears?
3. Should i be changing the cam gears just because im changing the timing chain?
4. If the timing chain did jump teeth, will i notice a change in performance?