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Ok 1 day i was on the highway-the engine light started flashing-it was misfiring on cyl.1-so i got wires plugs and coil packs just to be safe and all is well. But i noticed ever since that day my engine like when i hit the gas it hicups for 1 sec almost like a stumble or cough then it regains its power this happens only 1k-4k rpm and usually 10-30 mph ex 1st gear to second it coughs maybe a couple times and so on so on.. First i thought maybe its a fuel injector but i changed 1 and no difference- then i changed all of them still no difference- i have no idea wut to do- the only other thing i did was move the MAF closer to the throttle body cuz i have a short ram intake but ive never had a problem before. the engine is the g4eb 1.5L sohc plz help someone maybe thought it was carbon build up idk help appreciated
 
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