ok shmoo ummm so do you think its worth the time to take the motor apart?? can i tell if a valve is stuck without taking off the head? and thank you for the compression calculator. i ran low compression in this motor so i could add more boost but with #3 not firing off I cant put the turbo on. another question if my timing was off enough would that cause the whole no compression thing?? like i said before the shop i took it to to have the car tuned ran my cam timing 180 out i thought i had it fixed but now isee that thats not the case. the car runs good with alot of power but boggs a little arround 4-4800 rpm than vtec kicks in and things even out the car kicks hard when vtec hits and everything runs smooth. so could this be timing or shuld i just pull the head?? or is it deffenatly somthing to do with a cracked piston or wall or rings??