Why is oil passing through the exhaust of a newly rebuilt 6BG1 Isuzu engine?

1988 ISUZU TRUCK
20,000 MILES
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MEHC
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The engine has been recently rebuilt and has all new parts. I want to find a way to fix this problem without buying a whole new engine. It has only been a year.
Jan 8, 2012 at 1:01 AM
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RASMATAZ
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Do a compression test to determine if its rings or valves
Jan 8, 2012 at 1:16 AM
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RIVERMIKERAT
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Blown head gasket. Bad valve stem seals. Bad rings.
Jan 8, 2012 at 1:24 AM
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