Car performing bad and noisy

Tiny
STEVIE19732017
  • MEMBER
  • 2010 VAUXHALL ASTRA
  • 1.6L
  • 4 CYL
  • FWD
  • MANUAL
  • 45,200 MILES
I had it serviced and just gone through its MOT with no problems. Car very lumpy when in idle, when driving very jerky hardly any power and engine management light come and flashes also traction control light. I have got a code reader diagnostic machine plugged it in and it came up with code P0304. Which states cylinder four misfire detected. Took coil pack off and noticed the forth rubber was all split. Checked spark plugs which did not look too bad so I changed coil pack and the code no longer shows. But, still shocking when running. Any idea what this could be? Please. Thanks.
Wednesday, December 21st, 2016 AT 11:12 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hey STEVIE,

Even though the mileage is low on the engine I would start with the spark plugs and do a vacuum leak test. here are a couple of guides that will help you fix the problem.

https://www.2carpros.com/articles/how-to-change-spark-plugs

and

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Please let us know happens so it will help others.

Best, Ken

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Monday, December 26th, 2016 AT 7:04 PM

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