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  #1  
Old 05-21-2006, 02:51 PM
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M117, what are all the symptoms of leaking injector seals?

Would there be any loss in compression, discoloured/sooty plugs?

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Old 05-21-2006, 02:54 PM
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I would imagine that it would be difficult to start the 1st time because the fuel leaked out of the injectors with a normal 2nd start once the injectors have fuel in them again.
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Old 05-21-2006, 11:47 PM
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What model car?
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Old 05-22-2006, 06:10 AM
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1984 500sec
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Old 05-22-2006, 06:44 AM
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You mean the seals around the injectors?
Basically, you'd have a vacuum leak. So, rough/high idle, lean mixture.
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Old 05-23-2006, 01:51 PM
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What is the likely culprit if my number 1 plug is black and sooty?
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Old 05-24-2006, 08:44 AM
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Is it oily and carbon caked? If so, probably valve stem seals or valve guides letting oil through. If just sooty, it means rich mixture so could be a dirty injector that doesn't stop the fuel flow.

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