Car Problem Reports

Buick Rainier Worn Valve Seats May Cause Engine Misfire

Buick Rainier Problem
6 Reports
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Model Years Affected: 2004, 2005, 2006

Engines Affected: 4.2L 6 Cylinder, 5.3L V8

Average Mileage: 73,500 mi (65,000 mi - 82,000 mi)


The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Replacement of the cylinder head may be required to correct this concern.

  • Visitor, , 5.3L V8, 82,000 mi

    mt engine came on and the car rattles a little at rest.....was told one of the cylinders were misfiring and may need to change cylinder head will have car checked this week...was not told how much this will pressure was low in one cylinder and so is my cash right now...

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  • okayc, , 4.2L 6 Cylinder, 65,000 mi

    Had to have the head replaced, very expensive. GM did cover the parts however, it still cost me 1700.00.

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