baldsparky

My mate has a c class 2.5 V6 and he has exactly the same problem !!
My S320 is also a V6 and the belt makes a swishy almost sqeaky kinda sound on tick over.
In the car lot I have noticed other V engined mercs doing the same.
Just wondered if any of you guys find the same.
The problem is other than this the engine is super smooth and quite.
Belt eaz sprayed on helps a lot but not for long.
Is a new belt the answer ??

haoz129

My V doesn't sqeak. Sqeaky belt has nothing to do with engine layout.

I guess belt lost friction or pully going. If belt lost friction, with spray it gets worse. Spray cure noise but reduce friction.

Yes, change belt, if high mileage replace pullys and tensioner as well.

jnash

You may have a weak (failed) belt tensioner but not likely. Change the belt first and see if the noise goes away. While the belt is off, check the condition of the idler pulleys. It may well be that its a bad bearing on one of them. They too are easy to change out.
If you do need new idler pulleys, contact Shardul for aftermarket pulleys that are cheaper and better than the plastic ones.

S430LUCKDRAGON

Having trouble getting my tensioner pully off please help[

Welwynnick

Don't remove the pulley, just rotate it with a socket and breaker bar to release the tension. May need a torch and mirror the first time you do it.


Nick

S430LUCKDRAGON

It was just a breaker bar and socket on my car , got the power steering pump out this was my target hope it will be fixed when i get the new part