Audi S6 C5 4.2 V8 engine overhaul after head gasket issue, car crash on the test drive

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And welcome to another video where we finally manage to put the never ending story back on the wheels. This Audi S6 was in a really sad state when the car was delivered. Suspected with head gasket issue and surly very short afterwards it was confirmed with loads of other issues. Rusty oil sump for engine and gearbox, oil leak everywhere, water pump leaking, timing belt tensioner failed, exhaust fell apart, suspension had enormous play , brake calipers were seized up, oil leaks from the gearbox and many more small bits.

We thought in the beginning the car would be done much quicker but we didn't realise the car is actually 22 years old. After a few phone calls half of the parts that we needed were not available any more. So research started .... Coolant O ring gaskets were delivered from abroad , sumps needed refurb because they are not available any more, brake calipers were available but the supplier messed up the order three times in a row. And finally when it looks like we are done, our own mistakes catch up.

We didn't put the timing chain between camshafts in the correct position and after a short start up and run we had incorrect correlation faults showing in the engine ECU. Luckily it's not an engine out job , but the pain and fed upness was in the air. Front end needed removing which means coolant , hydraulic and gearbox oil will have to be drained.

After this issue was sorted we went for a test drive and shortly afterwards the coolant pipe from heating metrix POP so we were losing coolant. Luckily only at higher RPM so the hose was replaced afterwards. Also once the engine warmed up we had issues starting the car and after a few attempts the engine light came on. Luckily just a faulty sensor was quickly replaced and we were back on the road. While test driving this S6 on the roads we met another Quattro that probably ran out of talent because the car ended up off road on a rig . Definitely did enjoy this future classic on the roads but it was time to go back to the owner. Really hoping we will see the car next time again just for oil change.

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