i know this has probably been mentioned before but i havnt seemed to run into a problem that can fix mine.. i got a b7 block with a z6 head in a ef sedan.... i recently hydrolocked my old motor so i had to swap it out. after i swapped it out everything seems to be mechanically correct and the timing belt is on right.......the car starts but only stays on when u give it gas then wehn u shut it offff it shuts offf but when u pull out spark plug number one and start it it stays on.... i figured it was a bent valve so i pulled the head offf and when i did the rocker arms on that cylinder was broken.. so i replaced it and got compression back in that cylinder... but when i pull number one spark plug out the car stays on ....can it still be a bent valve orr possibly something wrong from the hydrovlock of the other motor?? please gimme only helpful advice asap