Mike_wilts
New Member
- Joined
- Sep 11, 2017
- Messages
- 11
- Car
- C200K
Hi from a Newbie!
New to this site and new to Mercedes..
About 2 weeks ago I was seduced by a 2005 C200K and having looked at the condition of the car thought to myself. 'that would make a nice project' having one or two scuffs and requiring a new column switch. Initially the engine was quiet, smooth and i was delighted with the 76K on the odometer.
Then suddenly 2 weeks on having covered in the region of 1k miles it started missing! felt like a coil pack had failed but alas the car was not going to get me home and promptly cut out and left me waiting for a recovery truck. My local garage soon informed me of the problem..
Chain had jumped the intake gear and i was looking at a minimum 2K bill...Really? Now, i'm pretty sure that i am not going to pay for a repair that could exceed the cost of the vehicle.
I proceeded to research the problem and to my horror discovered through the forums that this is a common problem..oh! don't we have 20 20 vision in hind sight!
I don't like to be beaten and having had the vehicle recovered back to my home set about inspecting the engine and proceeded to expose the cam chain and check the condition.
Initally the cam chain was not slack, rockers are where they should be, but suspect that some valve damage may be present but don't know for sure..
The problem clearly appears to be the intake gear. As it has very little of its teeth left!
It was clear as soon as I rotated to TDC that the intake was some number degrees out (significant)
After repositioning the cam shafts back to tdc, my intention was to rotate the crank clockwise to check for any strange noises or resistance (plugs out), however, the toothed wheel simply dosent have enough depth of teeth to prevent the chain slipping. The slip in the photo is one or two teeth..
I found it interesting that the chain when set to tdc and cams set to tdc, they line up, so i suspect there to be little cam chain stretch...
So how far do i go with this? I like the car and will undertake the repairs myself and would be interested if anyone has any views on the following
I have seen on Ebay the following... http://www.ebay.co.uk/itm/NEW-MERCE...966758?hash=item2386b69026:g:tVYAAOSw0j9ZP5Wk
My thought is that the merc gears were never fit fo there purpose and i don't see how any other gear could wear as equally as fast. Quotes for assembled gears vary from 430-920 per pair....
Has anyone on this forum gone this way.
Replace the gears, rotate crank manually to feel any resistance, if clear, re-assemble it and try to start it?
I suspect valve damage but would rotating for the simple hand over the spark plug hole confirm compression and exhaust?
I preloaded the tensioner with oil before re-fitting to in the car and the chain feels suitably tight. I dont want to throw hundreds and hundreds at this car, cant help feel slightly dissapointed with mercedes at this point. I'm sure that it would not be unreasonable to expect these key components to exceed 76K!
Another thought, does anyone have a used E gear which they have replaced, that they could spare (worn) so that I could get rotation via the crank which may have better teeth than the one i have for the purposes of diagnotsis?
I hope my time with the merc isn't over as i feel like the old girl needs a bit of tlc and consider that this problem cured would at least give me a couple of years motoring..that was the intention for buying it...
Thanks for reading and any views would be recieved gratefully.
Mike
New to this site and new to Mercedes..
About 2 weeks ago I was seduced by a 2005 C200K and having looked at the condition of the car thought to myself. 'that would make a nice project' having one or two scuffs and requiring a new column switch. Initially the engine was quiet, smooth and i was delighted with the 76K on the odometer.
Then suddenly 2 weeks on having covered in the region of 1k miles it started missing! felt like a coil pack had failed but alas the car was not going to get me home and promptly cut out and left me waiting for a recovery truck. My local garage soon informed me of the problem..
Chain had jumped the intake gear and i was looking at a minimum 2K bill...Really? Now, i'm pretty sure that i am not going to pay for a repair that could exceed the cost of the vehicle.
I proceeded to research the problem and to my horror discovered through the forums that this is a common problem..oh! don't we have 20 20 vision in hind sight!
I don't like to be beaten and having had the vehicle recovered back to my home set about inspecting the engine and proceeded to expose the cam chain and check the condition.
Initally the cam chain was not slack, rockers are where they should be, but suspect that some valve damage may be present but don't know for sure..
The problem clearly appears to be the intake gear. As it has very little of its teeth left!
It was clear as soon as I rotated to TDC that the intake was some number degrees out (significant)
After repositioning the cam shafts back to tdc, my intention was to rotate the crank clockwise to check for any strange noises or resistance (plugs out), however, the toothed wheel simply dosent have enough depth of teeth to prevent the chain slipping. The slip in the photo is one or two teeth..
I found it interesting that the chain when set to tdc and cams set to tdc, they line up, so i suspect there to be little cam chain stretch...
So how far do i go with this? I like the car and will undertake the repairs myself and would be interested if anyone has any views on the following
I have seen on Ebay the following... http://www.ebay.co.uk/itm/NEW-MERCE...966758?hash=item2386b69026:g:tVYAAOSw0j9ZP5Wk
My thought is that the merc gears were never fit fo there purpose and i don't see how any other gear could wear as equally as fast. Quotes for assembled gears vary from 430-920 per pair....
Has anyone on this forum gone this way.
Replace the gears, rotate crank manually to feel any resistance, if clear, re-assemble it and try to start it?
I suspect valve damage but would rotating for the simple hand over the spark plug hole confirm compression and exhaust?
I preloaded the tensioner with oil before re-fitting to in the car and the chain feels suitably tight. I dont want to throw hundreds and hundreds at this car, cant help feel slightly dissapointed with mercedes at this point. I'm sure that it would not be unreasonable to expect these key components to exceed 76K!
Another thought, does anyone have a used E gear which they have replaced, that they could spare (worn) so that I could get rotation via the crank which may have better teeth than the one i have for the purposes of diagnotsis?
I hope my time with the merc isn't over as i feel like the old girl needs a bit of tlc and consider that this problem cured would at least give me a couple of years motoring..that was the intention for buying it...
Thanks for reading and any views would be recieved gratefully.
Mike