Hey guys i will change the clutch of my car because when i am not pressing it it make rattling noise. Beside the noise there is no other problemm. My question now is should i change the flywheel too or not. Thanks

Engine?

As above, it will depend on which engine.
The 1.2 petrol should not need the flywheel changed, unless the clutch is allowed to wear to its rivets and damage the flywheel.

The diesel has probably got a dual-mass flywheel, and these can get loose and rattly, and do fail. Then you need a new one, or have it welded up and balanced. Although a welded one will remove the vibration damping characteristics, so could in theory lead to stuff failing due to vibration.

Don't know about the twinair, but is it is a solid flywheel, should last teh life of the car, if dual-mass, same as diesel.

I have a 1.3 multijet diesel engine 90hp

5 or 6 speeds ? Flywheel is the same but the procedure is different ...

Basically the DMF should be checked by the mechanic. Each manufacturer has some specifications on how much axial free play and side to side play is permitted.

When i did my clutch (on may 1.4T-jet) also brought a DMF.. but when checking them side by side.. the new one was just slightly better that the old one (like 0.5 mm side side play out of a maximum allowed 3mm - not sure on the exact specs anymore but i am sure on the small difference) Any how the old one was still within spec.
If i was to do it again i would have saved 300euro and reused the old one (BUT it was well within manufacturer specifications).

You could try and find a clutch kit + flywheel; that replaces the DMF with a solid one piece flywheel, and the clutch disk with one that has built-in springs (the one on DMF do not have springs). So this way you remove the DMF, but keep some of the vibration absorbance.

6 speed. Should i try to search for a used flywheel in good condition if its to be changed, becuase a new one costs a lot

eliohasa said:

6 speed. Should i try to search for a used flywheel in good condition if its to be changed, becuase a new one costs a lot

Click to expand...

First, you need to determine whether you actually need one.
If you do, a used one is a false economy, as it may well have little life left, or be about to fail, causing you to have to do the job twice.
Options are as above. A new DMF, or a kit that replaces it with a solid flywheel and a centreplate with shock absorbing springs. Do not attempt to fit a solid flywheel if the centreplate is also solid. At best you'll destroy the centreplate, at worst, the gearbox.

I suggest buying one from somewhere you can return it, if it's not needed.
This way you will have it at hand if needed.... if not then return it and save ~300euro.