Sometimes my car wont start and I cant hear the relay clicking when I turn the key, then a few tries later it clicks and the car starts fine..Im getting fuel but no spark and have replaced almost everything in the ignition, it just do it sometimes and sometimes it starts and revs keep going down until the engine dies. Im thinking about main realy but also im thinking about just buying a whole new ignition. Besides that the car runs fine minus some little bogging at 2,000-3,000 revs. Could all be related? BTW its a 91 Si.