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No Compression, Help!
charleswm94
Member Posts: 2
Hello,
I have a 2003 Audi A6 Quattro 3.0L V6 with no compression. The Timing belt broke Frown. I understand that this car has an interference engine and that it has a 99% chance to bend valves. Moreover, I removed the front bumper, radiator, valve cover assembly. I removed the spark plugs to check to see if any of the pistons had broke. None seem broke. The valves themselves are still going up and down freely, they don't seem to have bent. I bought the timing chain kit and the special tools to realign the camshafts and the crank, I then replaced the timing belt and water pump. Everything thing else is still off: front bumper, radiator, valve cover assembly, ac unit, and serpentine belt. The car still has no compression. If the crankshaft is out of time by 1 or 2 teeth could this cause the car to have no compression? Also, the exhaust valves on both heads are flush with the top of valve cylinders. The intake valves on both heads (the ones closest to the manifold on top of the block) sit slightly above the top of the valve cylinders. Both heads seem identical in relation to how the valves are placed. I try to turn the car over, and everything turns as it should, nothing seems to be clicking or hitting, but still no compression? Any Help? Things to check??
I have a 2003 Audi A6 Quattro 3.0L V6 with no compression. The Timing belt broke Frown. I understand that this car has an interference engine and that it has a 99% chance to bend valves. Moreover, I removed the front bumper, radiator, valve cover assembly. I removed the spark plugs to check to see if any of the pistons had broke. None seem broke. The valves themselves are still going up and down freely, they don't seem to have bent. I bought the timing chain kit and the special tools to realign the camshafts and the crank, I then replaced the timing belt and water pump. Everything thing else is still off: front bumper, radiator, valve cover assembly, ac unit, and serpentine belt. The car still has no compression. If the crankshaft is out of time by 1 or 2 teeth could this cause the car to have no compression? Also, the exhaust valves on both heads are flush with the top of valve cylinders. The intake valves on both heads (the ones closest to the manifold on top of the block) sit slightly above the top of the valve cylinders. Both heads seem identical in relation to how the valves are placed. I try to turn the car over, and everything turns as it should, nothing seems to be clicking or hitting, but still no compression? Any Help? Things to check??
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Comments
The best way to solve this is to do a cylinder leakdown test or pull the heads.
Maybe THIS VIDEO will give you some tips on engine timing.
If you feel suction, then you have more testing to do, but if you don't feel any vacuum at all, then the valves are probably bent.