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  1. rubior

    03 Cobra hesistates/ backfires under wot or above 4000 rpms

    Hey guys i was wondering if i could get some opinions on my issue, when you give it 3/4 throttle or full throttle it starts bucking, hesitating & backfires, & if your idling & step on it it literally cuts at 3000 ish rpms, hesitates & backfires & the rpms slowly go down, i replaced the spark...

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