I just recently purchased at 1990 n/a z with the intent to fix the flaws and have a great show car/track car. Im a do it yourself-er but with minimal knowledge. Everything i know is from fixing it myself. Im good with a wrench but cant seem to find my vacum leak. All the hoses just lead me around and around. Is there a way to cut these vacums hoses in half so i could fix the leak easier. Also i need to replace fuel injector for cylinder 4 i believe( injector on drivers side closest to front end). Anyone have some step by steps to help me get my z on the road?