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Black smoke on decellerationTouring Models |
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07-08-2008, 05:08 AM
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#11 (permalink) | |
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Start The Engine
Ride: 1998 sportster 883 hugger
Join Date: 2008, Jun 21
Posts: 27
My Mood:
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Re: Black smoke on decelleration
Quote:
it was the unit conflict, you were talking about psi not bar... so perfect reading should be 135 psi which is quite close to kenr427s result. maybe a bit lower than it should be, but can it be the reason of smoke? |
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07-08-2008, 08:01 AM
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#12 (permalink) |
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Community Liaison
Ride: 07 Road King Classic
Join Date: 2007, Jun 21
Posts: 10,315
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Re: Black smoke on decelleration
135 is rather low and indicates a loss of seal on the rings . It more than likely could be the problem here.
If you put just a small amount of oil in the cylinder and retry the compression test again, it will give you a better reading indicating the rings are worn.
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