Hi this should be the last update on this 2007 Audi Quattro with the 2.0L FSI engine what we found on the cylinder head was a burnt exhaust valve on cylinder no. 2 and a blown head gasket between cylinder no 1 and 2 I rebuilted the head with 16 new valves and valve stem seals put a new timing chain and a new timing chain adjuster I had a issue when I first started the engine there was a fault code for camshaft and crank shaft correlation (out of time ) so I had to remove the valve cover and check the timing of the 2 cams and the intake cam was off by on tooth I'm pretty sure that they were ok when I set them on the bench but they might of skipped when I started the engine with no oil pressure but one thing I notice you can't trust the factory tool to get the timing right you have to double check this is why I decided to show that it doesn't always work the first time and any mechanical work that you do is always a risk to do something wrong it not like I assemble these head every day like someone on the factory floor. but now I know better my new rule is to put a new chain and a tensionner and crank the engine a couple of seconds to let the hydraulic tensionner to spread the chain tight so that there is no chance of the chain to skip on the initial start up .
27 авг 2024
