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what are the symptoms of a bad fuel pressure regulator?

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Old 02-28-2008, 01:29 AM
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Default what are the symptoms of a bad fuel pressure regulator?

as the tittle says. what are the symptoms?

also other then tightnest, what can cause a leak in the fuel filter?
Old 02-28-2008, 09:14 AM
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Default Re: what are the symptoms of a bad fuel pressure regulator? (Del Sol on Steroids)

-high fuel pressure at idle
-fuel out of vacuum line
- fuel filter leaking out of top or bottom fitting?
Old 02-28-2008, 04:56 PM
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Default Re: what are the symptoms of a bad fuel pressure regulator? (mmuller)

Higher than normal pressure at idle will cause a low idle. If pressure is too low it may not idle at all, stall shortly after startup, or when you hit the gas. If pressure is too high or low while driving you may feel a lack of power during an rpm range. ex between 3000-4000 it may bog but then be fine after that.
Old 02-29-2008, 03:46 AM
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Default Re: what are the symptoms of a bad fuel pressure regulator? (mmuller)

fuel filter is leaking from the top.

will have to check pressure at idle. Should it be constant to whatever it was tune to?, correct?

I did also smell a hint of gas from the hose line
Old 07-23-2014, 05:13 PM
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Default Re: what are the symptoms of a bad fuel pressure regulator?

Ok I have a bad idle . So low it wants to die. I give it gas and it will start . Once I let off the gas it wants to die again. Sometimes it does. When I unplug the vacuum from the FPR it idles great. I took the FPR off and I think it's clogged. Anyone have ideas?
Old 07-23-2014, 07:31 PM
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Default

Smell the vacuum hose. The fpr is bad if you smell fuel in the vacuum hose after unplugging it from the IM.
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