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What are the symptoms of a failed or dailing Fuel rail damper?

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Old 08-02-2010, 06:59 AM
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ehall
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Default What are the symptoms of a failed or dailing Fuel rail damper?
That's the question. TIA
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Old 08-02-2010, 07:48 PM
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BUMP!
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Old 08-02-2010, 07:56 PM
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Well when the fail completely, the diaphragm usually rips and if you pull the vacuum line off, it will be shooting fuel out with the car running. Thus, fuel gets into your intake via the vacuum line and starts fouling out the plugs.
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Old 08-02-2010, 07:59 PM
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So if it's partially failing, there should also be some fuel in the vac line. Should there also be fuel resting in the line with the car off?
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Old 08-02-2010, 08:32 PM
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Originally Posted by ehall
So if it's partially failing, there should also be some fuel in the vac line. Should there also be fuel resting in the line with the car off?
Well i don't really know that it can partially fail. I think it is all or nothing.
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Old 08-02-2010, 08:50 PM
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When mine failed, the damper was damp, hehehe, with fuel where the two halves are crimped together and fuel was in the vacuum lines too.
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Old 08-02-2010, 08:57 PM
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Thanks guys. I'll give it a look. I'm replacing the fuel lines and just want to address everything at once.

What are the running sympotms, if any?
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