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Symptoms of a failed fuel pressure regulator?

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Old 04-04-2011, 05:48 PM
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Default Symptoms of a failed fuel pressure regulator?
I put the fuel pressure regulator vacuum line in my mouth and pulled a vacuum, and I got a strong taste of fuel. I figured the fuel was supposed to stay on the other side of the diaphragm. What are all the symptoms of a failed fuel pressure regulator?
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Old 04-06-2011, 08:07 PM
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Usually when the FPR goes bad you have fuel in that vacuum line. Use a vacuum tester on the port and see if it holds vacuum.
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Old 04-06-2011, 08:25 PM
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Yes vacuum, yes fuel vapor in line.
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Old 04-07-2011, 07:22 AM
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If you got a mouthful, it's bad. The taste test is definitive.

Some odor is normal. If it holds a vacuum, it's probably OK.
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Old 04-07-2011, 07:25 AM
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Seems like a failed unit would do a great job of cleaning the intake tract and ports! Could this be a device worth marketing?
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