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Hi my Hyandai Atos prime gls 1.1 2008 has a irregular idling speed hot or cold, and wen driving jerking, already replaced plugs,fuel filter, coil packs, and serviced injectors.
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Hi there, it could be a change of spark plugs will solve your problems. I'm driving one too but found that it jerked when accelerating. So I read up and presumed that the old plugs might be the cause. After changing new spark plugs, it doesn't jerk anymore.
on the side of the engine near the oil filter is the crankshaft position sensor. some time those get heat sensitive .noamaly the sensor is not to pricey. so its more cost effective to just replace it.
CHECK FUEL PRESSURE AND FUEL PRESSURE REGULATOR.YOUR FUEL PRESSURE SHOULD BE 38 - 44 PSI.IF FUEL SYSTEM GOOD.YOU COULD HAVE BAD OR STOPPED UP FUEL INJECTORS.TRY CLEANING FUEL INJECTORS FILL GAS TANK UP.PUT A BOTTLE OF INJECTION CLEANER IN FUEL TANK.DRIVE CAR AROUND THE BLOCK.OR DRIVE A FEW MILES SO THE INJECTOR CLEANER CAN FLUSH OUT THE INJECTORS.IF THIS DONT WORK.SCAN IT FAULTY INJECTOR FAULTY TORQUE CONVERTER AND IDLE SPEED CONTROL.
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