My Audi A5 had some bent valves after the chain tensioner broke. I have replaced the bent intake valves and a single broken rocker arm.
When I reassembled the top, I noticed the first pair of valves on the intake side does not open simultaneously. It seems like one of the two are delayed. I would say they are about 300ms out of sync of each other. They do however not touch the pistons.
2nd valve on the intake side from the front goes down a bit faster than the first one, and goes up faster if i'm remembering correct. This is only checked by manually turing the crankshaft gear by hand -So not very fast.
We already assembled the engine when we spotted this.
Since the valves did not touch the piston, we decided to do a test start. It sounded normal, but it seems to lack some compression at the last cylinder.(This valve offset issue is on the first cylinder) I believe this is the standard issue regarding oil consumption on these 1.8t engines.
Is this normal, or do I maybe have to change the intake camshaft?
As stated above, the engine seems to run normally (only tested on idle 5-10s w/o coolant). Is it responsible to use this cam, or will it cause engine failure down the road?