Gday all,

My car(Fabia 1 - 1.4L petrol, 103k km about 70k miles) has a strange metallic knock sound when I release the clutch (while driving) without using the accelarator. (shifting the gears up or down with 2500-3500 revs)

Also when I accelerate to let say 3500, then release the pedal I hear the same knock.

I went to a repair guy who put it on the bridge, then rotated the wheels by hand and then later the drive rods together, a metallic sound is heared and there is a clearance in them.

His suggestion was to leave it be or put teflon in the gearbox.

My brother says drain the oil and sif for metal.

Does anybody have a professional opinion?

thanks,

kami.

Could be one or more of the rivets that holds the crownwheel to the diff carrier has broken off. Plus a few dozen other things. Drain the gearbox oil and check for metal bits coming out. If you find any metal chunks it's time for a new gearbox.

Thank you, I will drain the gearbox and hope for the best.

Had the gearbox drained, no big pieces just fine particles, the colour was a bit brassy.

The knock is still there at every gear change, unless I ease the clutch coming up and press the accelarator.

Do I need a new gearbox?