Scirocco Central

Can anyone confirm whether all 2.0 tsi engines in the scirocco are chain driven not belt. I'd always been told they were belt until the 211ps engine cam out, but went into the dealer today and they told me it was chain. Happy as its saved me a few hundred quid as it was due, but just not convinced. Had a nose around the engine bay tonight, but it was too dark to confirm either way. Wikipedia (source of all knowledge) says its chain, but just wanted confirmation from others. The engine code starts CAW, if that help confirm either way?

Duncan

It's chain driven

Perfect! Few extra beer tokens this weekend ;-)

There is a chain tensioner problem with the 2.0TSi (CAWD or CCZB) which causes a rattle noise. It can lead to the chain jumping the drive by a tooth or the chain is stretching on its own accord.

First check (easy one) is VCDS for comfirmation of fault codes:

- 00022 - Bank 1, Camshaft Position -G40/crankshaft position sensor -G28, incorrect assignment.

- 00808 - Knock Sensor 1 -G61, signal too big.

If not, may be in its early stages of chain stretch. So...

On the right side of the lower engine, turn the belt pulley until the engine is TDC and the mark on the inner lip of the belt pulley aligns with the mark on the engine right side lower cover. The cover mark is visible between the upper and lower open area of the belt as it loops round the crank.

With the engine aligned, there is a small round rubber cover on the engine right side lower cover at about 10h30mins on the circumference of the pulley as you look into the engine crank from the right side. Remove the rubber cover. This will expose the hydraulic chain tensioner.

Looking at the extending "piston", there are notch marks on it visible on the top face area. If there are more than 4 notches visible out of the tensioner housing body, then the timing chain has stretched.

If that is also OK, next needs the timing chain cover off.

With the chain cover off, use the chain tensioning rail guide (which the chain tensioner in the spy hole pushes) to push back by hand the chain tensioner. If the tensioner piston can be pushed back by hand, using the tensioning rail guide into its housing body, that is incorrect. If it won't push back into the housing that is correct.

If you identify problems with above it becomes standard work to take off the cylinder head to look at piston crowns and valves etc. for kiss damage.......

C.

I thought stretching was not the issue, but the tensioner that could just break and loosen the chain?