Hey...I have an 08 g35 and I recently opted to replace the 2 galley gaskets in the timing chain compartment myself instead of forking over the $3500 the shop wanted to do the job. After putting everything back together the car would not start. It cranks over but won't start. Afree trouble shooting for a couple days with no success I threw in the towel and had it towed to the shop. They said that the timing was off and there is no compression and wanted $3200 to fix. So I had it towed back to the house. My question is this...does the car have no compression because the timing is off or have I damaged the valves just by cranking it over with the timing off.
I'm hoping I can resolve the problem by just correcting the timing...ANY THOUGHTS?

 

Pull off the front and check for proper timing chain alignment.

EDIT: The cam timing being off can cause zero compression yes, if they're not BOTH fully seated closed then it won't make any compression. It's definitely possible to bend valves but before tearing the heads off I would just pull the timing front cover, set at TDC according to the FSM, check the alignment marks, realign as needed, leave the cover off and crank the motor and do your own compression check to verify it's good.

If you have compression then chances are you didn't ding any valves, if you still have no compression pull the motor and take the heads off and get them pressure tested at a head shop.

Double EDIT: You have probably 20-30 degrees of leeway before you bend a valve so... it's got to be pretty far off.

 

I'd imagine it would have emitted a terrible noise if there was interference too

 

Ya I thought the same thing about the noise...there was no obvious sound when we cranked the car over that made me think we damaged something..