Discovered a knocking noise on tick over last week.

Definite clonking sound from the engine, (ooh err!) .

Seemed to go away on driving but returned at low revs.

Went louder when I depressed the clutch.

Alex Lawrie Skoda in Liverpool collected the car today and called me back an hour or so later to say the flywheel was loose.

So it’s a gearbox off job and a new flywheel to go on tomorrow.

All going well should get the monster back tomorrow night.

Covered by the warranty so no cost.

I’ll let you know how I get on.

thats a worry, i would have thought the production line would be hot on stuff like that.

Duel Mass Flywheels are known for their weakness; most go on for ages but others appear to fall apart far to early.

Glad to hear your dealer got to the bottom of the issue quickly; round here it takes about 8 visits before they stop saying NFF :S

TP

After my car was hit from behind (my bumper had to be painted) I too am hearing a knocking noise on idle. As soon as the car is moving (I have the DSG version) the noise disappears. My Skoda dealer after checking told me that the gearbox should be changed. From my web searches though, I think it should be the dual mass flywheel. I'll check with them to clarify. Maybe they meant DMF instead of gearbox.

Car returned today all working again.

As TP says the dual mass flywheel had become faulty, it contains springs supporting an inner flywheel which acts as a shock absorber for the transmission.

http://www.honestjoh...int_630x504.jpg

The springs had weakened and the inner wheel had become loose causing the knocking sound on tick over.

When the revs increased it locked into place and was OK.

Not sure how Alex Lawrie Skoda spotted it so quickly but glad they did.

because dual mass flywheels are inherently weak and the noise will be an everyday problem they deal with

because dual mass flywheels are inherently weak and the noise will be an everyday problem they deal with

Must be an nice little earner on the warranty returns then!

Probably they do serve an important purpose but under extreme circumstances they can be ruined easily. Mine lasted 168k miles, i know of some lasting 600 miles, and that was twice around (very bad driver)

So, when I stall the thing but am still rolling, whats the best to restart theb engine, bump start or key restart??

I don't think it's possible to bump start a diesel, at least I've never managed it.

Fred

I think Frenchtone was talking about stalling the engine with the vehicle still moving where dipping and dropping the clutch will start the engine-but I am not sure how good that may be for the DMF. It does work and having driven for donkeys years without stalling I am learning how to recover since my first diesel has led me to re-learn such things......

It is possible to bump start a diesel. Many (many) years ago when I was a bus conductor there was one driver whose party piece at one particular terminus was to bump start the engine so that it ran backwards.

He used to roll the bus backwards and drop the clutch in first.

It was very funny (for an impressionable youth) to see clouds of smoke coming out from under the bonnet.

It's a good job Gardner diesels were robust in those days!

I think Frenchtone was talking about stalling the engine with the vehicle still moving where dipping and dropping the clutch will start the engine-but I am not sure how good that may be for the DMF. It does work and having driven for donkeys years without stalling I am learning how to recover since my first diesel has led me to re-learn such things......

Exactly my si****ion! -- just wondered!!