Intake Manifold Gasket May Leak Engine Oil on Buick Riviera

The intake manifold gasket may develop external engine oil leak. The manifold gasket will need to be replaced to correct this issue.

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Average mileage: 157,000 (121,000–183,000)
6 model years affected: 1993, 1995, 1996, 1997, more1998, 1999
14 people reported this problem
4 people shared problem details
1996 Buick Riviera170,000
Smells of burning oil when I drive it
1998 Buick Riviera121,000
Slow drip onto exhaust manifold makes black smoke,
1993 Buick Riviera155,000
intake manifold gasket leak. causing gas consumption and stalling out
oil consumpsion excessive qt week
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