[Trond]

Hi all,
My 280GE runs fine now after changing the timing module. However it has developed another sound from the engine head which is similar to the tikking walves, but also more "takking" - so heavier in a way. Could this be the register chain? The noise is relative to the engine rev and get a bit louder at higher revs, but independent from load / unload so I dont think it should be a rod or main bearing or so. It has run 200000 km. Any other things to look after on the sylinder top like wear in camshafts etc.?
Trond

 

[DUTCH]

Trond - 3/6/2005 2:59 PM

Hi all,
My 280GE runs fine now after changing the timing module. However it has developed another sound from the engine head which is similar to the tikking walves, but also more "takking" - so heavier in a way. Could this be the register chain? The noise is relative to the engine rev and get a bit louder at higher revs, but independent from load / unload so I dont think it should be a rod or main bearing or so. It has run 200000 km. Any other things to look after on the sylinder top like wear in camshafts etc.?
Trond

If it has never had the timing chain replaced, it is far past time. Have you adjusted your valves?

 

[Trond]

The timing chain has never been replaced and the valves has not been adjusted during the last 4 years or 25000 km or so. Is this a heavy job for professionals or could it be done by a "hobby mechanic"?
Trond

 

[DUTCH]

Trond - 3/6/2005 3:22 PM

The timing chain has never been replaced and the valves has not been adjusted during the last 4 years or 25000 km or so. Is this a heavy job for professionals or could it be done by a "hobby mechanic"?
Trond

The valves you could do yourself, but the timing chain - in my opinion - is probably beyond the scope of a hobby mechanic.

 

[Ernest T Bass]

My engine was really noisy when I bought it (115,000 miles) the valves were really loose and setting them up properly made a huge improvement – its virtually silent now. You can use a regular wrench but the Mercedes one is better as the nuts are quite thin and they can be very stiff and stick so be careful not to round off the flats. In addition, good fresh oil can work wonders in reducing noise. Not that I want to start a synthetic debate but you could probably use one if your engine does not leak too much.

 

[Iver460]

Cam wear is common on M110-engines, particulary on cylinder number 5 and 6, because of a tight oil passage. A high quality oil is therfore a good investment on a 280 GE. My father had the cams replaced at about 260.000 kms, you could CLEARly see that the hardned outer of the shaft had been worn trough and some of the knockles had odd shapes. Take a look at your cams while adjusting the valves, you'll see if a replacement is nessecary imeedeatly.

 

[4x4rancher]

Loose tappets will increase cam wear because of bounce and add to noise .also worn valve guides can give noisy running