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Published byLouden Motorcar Services Modified over 6 years ago
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Find the Symptoms of a Bad Fuel Pressure Regulator
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It is important that a vehicle has a properly working fuel pressure regulator to keep it moving steadily and consistently.
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When the regulator malfunctions in some way, it would disrupt the entire internal combustion process which the engine depends on to generate moving power for the vehicle.
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There is possibility of a number of easily noticeable symptoms that arises when your fuel pressure regulator goes bad or starts to go bad.
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Below are mentioned some of the symptoms that your car show because of a bad fuel pressure regulator. Engine Misfires Spark Plugs Covered in Soot Black Smoke Tailpipe is Dripping Gasoline Vacuum Hose Has Gasoline Engine Won’t Turn Over
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Engine MisfiresEngine Misfires
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The most obvious symptom of a bad fuel pressure regulator is an engine misfire and loss of acceleration power.
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While driving, suddenly your vehicle will stumble and slow down, then it may go back to accelerating normally for a short time before losing acceleration power again.
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Spark Plugs Covered in Soot
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If you suspect that you have a bad fuel pressure regulator, take out your spark plug and see if there is any black soot on the end of it.
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This soot is the result of oil burning in the engine’s head and you will need to replace both the fuel pressure regulator and the spark plugs in this case.
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Black SmokeBlack Smoke
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You should only be seeing gray or white smoke coming out of your tailpipe and if you start seeing black smoke, the cause can likely be attributed to a bad fuel pressure regulator.
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Although there are lots of other reasons why black smoke may be there, it is likely the regulator’s fault if you notice any of the other symptoms listed here too.
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Tailpipe is Dripping Gasoline
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If your tailpipe is dripping gasoline out of it, then your fuel pressure regulator is probably letting it happen because it has gone bad.
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A malfunctioning regulator will allow gasoline to get into the vehicle’s exhaust system and it finds its way out of the tailpipe along with the exhaust fumes.
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Vacuum Hose Has Gasoline
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One sure way to find out whether you have a bad fuel pressure regulator is to disconnect your vacuum hose from your fuel pressure regulator and see if it has gasoline inside of it.
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Be sure to do this while your engine is turned off and if there is gasoline in your vacuum hose, then you have a bad fuel pressure regulator.
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Engine Won’t Turn Over
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If you try to start your vehicle and it won’t start because the engine doesn’t turn over, then something is wrong with your fuel pressure.
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Since the regulator is what manages the fuel pressure, then your fuel pressure regulator is to blame and must be replaced.
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