Starts on carb cleaner, 45 psi fuel pump, so i replaced fuel reg. still not starting, but if i turn key on off on off a few times and build up presure it will start, so i replaced fuel pump 2 weeks ago, everything worked good until it rained then i went to leave work no start, had weak spark so next day at lunch still no start, i replaced cap and rotor, started up ran good until today {2 days} no start, i left key on and climbed up under hood i could hear a faint clicking coming from plentem whear wires go in, i taped on it with my ring it stoped i got out from under hood reached thru window cranked over a half turn and started, drove it around block, shut off started a few times, you got any ideas of what i should try next? could it be pluged up injectors? but when it is running it has great power.