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B20b smoking but compression and leakdown look great. Any help?

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Old Feb 3, 2004 | 05:46 AM
  #1  
Will Albers's Avatar
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From: Falls Church, va, USA
Default B20b smoking but compression and leakdown look great. Any help?

Well here are the numbers:

1: 2%
2: 3.5%
3: 3.5%
4: 2%

Compression

evens have 171
odds have 168

This was all using a digital set of gauges on a b20b that was turboed. It smokes pretty bad while shifting and at idle. i had thought it was the turbo, but i removed it and it still smokes. What else could it be? bad PCV system? too much fuel? What can i check?

The smoke is dark in color and smells like burning oil.
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Old Feb 3, 2004 | 11:48 AM
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Will Albers's Avatar
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Default Re: B20b smoking but compression and leakdown look great. Any help? (Will Albers)

just moves to fast to the back
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Old Feb 3, 2004 | 12:12 PM
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Dan GSR's Avatar
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From: New York
Default Re: B20b smoking but compression and leakdown look great. Any help? (Will Albers)

valve seals

good idea to check out the pcv as well
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Old Feb 3, 2004 | 03:28 PM
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From: Flowery Branch, Ga
Default

Maybe you're running rich? Valve seals are also a possibility...
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Old Feb 3, 2004 | 04:27 PM
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Default Re: (LudeyKrus)

i would definately reccomend replacing valve seals
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Old Feb 5, 2004 | 10:56 PM
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civicsitek GanGsTa's Avatar
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From: Spokane, WA, USA
Default Re: (dirtyd463)

How many miles are on the engine?
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Old Feb 6, 2004 | 07:45 AM
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From: Lake Orion, MI, 48362
Default Re: (civicsitek GanGsTa)

I also think maybe valve seals...

Have you pulled the spark plugs? Or the header/exhaust minifold?

On a non-honda motor(An AMC 304 cu. i. V8, to be exact) that I had in my Jeep, I had the valve seals go out, same thing, good comp & leakdown. 5 cylinders had pretty bad valve seals, was easy to see by the oil-foiled plugs and oily residue in those exhaust runners...
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Old Feb 6, 2004 | 04:15 PM
  #8  
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From: Great Falls, VA, USA
Default Re: B20b smoking but compression and leakdown look great. Any help? (Will Albers)

Oil rings sticking, broke or worn have no effect on compression and leakdown test. But there are other possibilities, valve stem seals are another, even clogged pcv valve.
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