On the way back however when i accelerated the car juddered and hesitated slightly before picking up again. It seemed to do this in all sp?

2019-01-30T14:35:06Z

I have a Vauxhall GSI, i have just completed a long journey upto Scotland and back. car started juddering on the motrways when i accelrated. also it seems to do it in all gears. Same symptoms as contaminated fuel, judder then pick up again. Air Mass Flow meter?

2019-01-30T14:35:39Z

Z20LET 2.0 TURBO ENGINE.

2019-01-30T14:36:32Z

I do have uprated airbox on it and K & N panel filter installed.

thebax20062019-01-30T17:09:23Z

The cleanable air filters get an oil mist sprayed on them. It's a common problem with that oil migrating to the MAF sensor wires and ruins the MAF sensor. Go back to a stock filter. They have plenty of air flow until you cam a motor. Clean the throttle body.

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Amy2019-01-30T14:33:30Z

someone mentioned the air mass flow meter. could this be correct?

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