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i have a Buick Lasbre 2001 w/ a code p0306- where do i start to find the cause?

Vehicle: 2001, Buick Lasbre

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Hi there,

It's possible the problem is that the car needs a simple tune up. I would start with wires and plugs, then if the misfire continues, try spraying some water on the plug wires with the engine running and the ignition coils. This will usually cause spark arcing if there is a problem with one of the coils.

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