99 montana oil consumption

1999 PONTIAC MONTANA
150,000 MILES
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J.STIEG
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Having a few problems with a 99 montana 3.4, oil seems to be getting through the motor and coming out the tail pipe. Would that be the lower intake gasget?
also I get code p0101 and cly #5 misfire code, engine also stalls. Do I need to replace MAF?
Jul 20, 2011 at 4:36 AM
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RASMATAZ
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Engine oil coming out of the exhaust-check engine compression-could be blown headgasket, cracked head or block and an intake leak-
Jul 20, 2011 at 5:23 AM
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J.STIEG
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Ok, next time I get a hold of the vehicle I will check compression.

What about the MAF sensor, I get code p0101.
Jul 21, 2011 at 1:38 AM
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RASMATAZ
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Worry about the oil coming out the tail pipe-start there
Jul 21, 2011 at 5:56 AM
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J.STIEG
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I found that the lower intake was bad. Can you get me torque specs for rockers arm bolts, its a 3.4l. thanks
Jul 26, 2011 at 4:44 PM
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J.STIEG
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also need lower intake manifold torque sequence and and how many ft lbs. thanks.
Jul 26, 2011 at 6:18 PM
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RIVERMIKERAT
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Tighten the bolts to 62 inch-pounds first. The vertical lower intake bolts are then torqued to 115 inch-pounds, while the others are torqued to 18 foot-pounds. The bolts are also recommended to be replaced.
Aug 13, 2011 at 11:36 PM