I have a 2007 Chevy Aveo w/ 1.6L engine. A few days ago my car died and I had it towed to a mechanic. He showed me that there was 0psi compression coming from the cylinders (I believe all of them). Also he showed me where my timing jumped. I'm pretty sure the valves are bent but I refuse to pay $2500 on a new engine. Will replacing these two things restore compression? The mechanic says it could work but it would cause high pressure in the top of the engine and low pressure in the bottom so he doesn't advise that. I have done deep engine work before so i know what I pretty doing when it comes to the manual labor. I just haven't worked on a case like this before so I'm not too sure.