I just bought a 88 crx si and its having problems.. It doesnt start because i think the timing is off. Like it wont turn over. Could also be a spark plug.. or wire.. also when im driving down the road about 4 miles later the car will shake and shimmy a little. then the check engine light will come on, then the car will run smooth.. My buddy thinks that could be a O2 sensor.. If anybody could help me with how to time my car.. please do.. im a amature