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I left my car unused for 3 months because I lost my licence in between and now it wont start. and I know its not the battery cuz I switched it over with another battery and still the same. the car sounds like its almost bout to start but doesn't . any idea what could be wrong? its got enough engine oil too

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https://www.sau.com.au/forums/topic/273424-car-not-starting/
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