Sik_Cordz
Member
hey guys i went to start my car yesterday and its not firing. it turns over but no go. checked spark witch seems a bit weak. its got a brand new msd ignition system. 6al and ss coil.check for fuel. got plenty coming out the rail. now i did a ecu code check and its pulling up error 21 witch is ignition signal circuit . now prior to this the car had a ems ecu installed witch to run it needed the dizzy rotor arm modified to change the phasing angle. now ive put back the rotor button to the standard position .now i believe maybe its got a problem with the power transistor witch from what ive read has something to do with the coil. what are you thoughts. i will hopefully put another dizzy in the next week or so