i have a 2000 mazda protege lx and today it won't start it cranks but slightly i can hear the starter clicking i olmed the battery and it reads 12.34 volts which is normal so that cancels the alternator, i boosted it with my ford focus and i had it running for 5 seconds the entire car shook it was sputtering and it shut off on its own. i scanned it with my obd2 scantool and it can up with nothing.so which takes me to ithier bad injectors or bad spark plugs but i don't think it would be a bad spark plug because an engine can run with 3 spark plugs but it just runs really rough. has anyone had this problem before? or an suggestions what it could be? im leaning towards bad injectors.

 

it's okay i found the problem its a bad ignition coil for the # 2 and 3 spark plugs so im going to get the part tomorow and that should be it.