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remove a plug connector, take a working plug, insert, touch to the engine. crank and see if it throws sparks. If not, you have no spark (duh). That could be the PTU (front of engine). Relay in fuse box under hood "ign coil relay" could be bad, test with 12 volt wire, hear a click. when it clicks hold it there and test across pins 3-5 for continuity with a meter or test light. IF no good replace relay. If good but no spark, PTU could be bad. It accepts signals from the ECU, and acts like an amplifier, sending the boosted signal to the plugs. What blows first, your amp? Or your radio? The amp. If spark, then fuel system may be the next step, and others could help you better with that one. :ok, i parked my car and now it wont start... just keeps spinning but no fire... what should i do...? and in what sequence?
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