Symptoms of a Bad or Failing Fuel Pressure Regulator

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Cost of Replacing a Bad or Failing Fuel Pressure Regulator

Common signs include engine performance issues, fuel leaks, and black smoke coming from the exhaust. Our certified technicians can come to you and diagnose the problem. You will receive a $30 credit towards any follow-up repairs that result from the diagnostic. Following are example prices for Fuel Pressure Regulator Replacement. Click on the button below to get an upfront quote for your car.

Cars Estimate Parts Cost Labor Cost Savings Average Dealer Price
2003 Volkswagen Golf $148 $77.98 $70.00 20% $185.48
2003 Chrysler Town & Country $198 $107.39 $91.00 19% $247.14
2005 Buick Rainier $176 $106.45 $70.00 17% $213.95
2008 BMW 135i $304 $205.88 $98.00 14% $356.38
2012 BMW 535i xDrive $311 $205.88 $105.00 15% $367.13
2012 Porsche Panamera $163 $93.13 $70.00 18% $200.63
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How to Diagnose a Bad or Failing Fuel Pressure Regulator?

fuel pressure regulator

The fuel pressure regulator is an engine management component that is found in one form or another on virtually all internal combustion engines. It is a component of the vehicle’s fuel system, and as it’s name implies, is responsible for regulating the pressure of the fuel flowing through the system. Different engine operating conditions will require different amounts of fuel, which can be metered by changing the fuel pressure. Many fuel pressure regulators use vacuum operated mechanical diaphragms to change the pressure, though there are vehicles that are equipped with electronic fuel pressure regulators. Because the fuel pressure regulator plays a direct role in the distribution of fuel to the engine, any issues with the component can potentially cause performance issues and other problems for the vehicle. Usually a faulty fuel pressure regulator will produce a few symptoms that will alert the driver of a potential issue.

1. Misfires and a decrease in power, acceleration, and fuel efficiency

One of the first symptoms of a possible issue with the fuel pressure regulator is engine performance issues. If the vehicle’s fuel pressure regulator fails or has any issues it will disturb the fuel pressure of the vehicle. This will in turn throw off the engine’s air fuel ratio and tune which can have a dramatic effect on the performance of the vehicle. A faulty fuel pressure regulator may cause the vehicle to experience misfires, a reduction in power and acceleration, and a drop in fuel efficiency. These symptoms can also be caused by a wide variety of other issues so having the vehicle properly diagnosed is highly recommended.

2. Fuel leaks

Another symptom of an issue with the vehicle’s fuel pressure regulator is fuel leaks. If the fuel pressure regulator’s diaphragm, or any of the seals fail, fuel leaks can occur. A faulty regulator can not only leak gasoline, which is a potential safety hazard, but can also cause performance issues as well. A fuel leak will usually produce a noticeable fuel smell, and may also cause engine performance issues.

3. Black smoke from the exhaust

Black smoke from the exhaust is another symptom of a potential issue with the vehicle’s fuel pressure regulator. If the fuel pressure regulator leaks or fails internally, it may cause the vehicle to emit black smoke from the tail pipe. A faulty fuel pressure regulator can cause the vehicle to run excessively rich, which apart from reducing mpg and performance, can cause the vehicle to produce black smoke from the tailpipe. Black smoke can also be caused by a variety of other issues, so having the vehicle properly diagnosed is highly recommended.

While some fuel pressure regulators are built into the fuel pump assembly, most fuel pressure regulators are mounted in the fuel rail and can be serviced independently of the rest of the system. If you suspect that your vehicle may be having an issue with the fuel pressure regulator have the vehicle inspected by a professional technician, such as one from YourMechanic, to determine if it should be replaced.

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Recent Fuel Pressure Regulator Replacement reviews

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YourMechanic Fuel Pressure Regulator Replacement Service

Average Rating

4.7/5

Number of Reviews

64

Rating Summary
57
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4
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Jeremy

17 years of experience
147 reviews
Jeremy
17 years of experience
Jeremy was awesome! He got the job done quick and he even replaced a cracked hose he noticed which he did not have to do! Highly reccomend
1990 LEXUS LS400 - FUEL PRESSURE REGULATOR - LAKE WORTH, FLORIDA

Matthew

30 years of experience
268 reviews
Matthew
30 years of experience
he took the time to show me exactly what was wrong and why. Then he repaired it so quickly, I didn't have time to finish watering my flowers before he had to leave!
2003 CHEVROLET CAVALIER - FUEL PRESSURE REGULATOR - HAMPTON, VIRGINIA

Milton

34 years of experience
137 reviews
Milton
34 years of experience
Milton was awesome. I was told by another auto service that I needed a fuel pump installed at the cost of $994 and I contacted Your Mechanic for another estimate and their's was the best so I got an appointment and was given Milton's name as my repair man. Milton contacted me the night before to confirm our appointment the next morning and he arrived on time at my house with a friendly smile on his face. After Milton ran the diagnostics on my truck he said that my fuel pump working fine and that I just needed a Fuel Regulator instead which saved me $654!! Being a senior citizen on a fixed income this was a blessing and I can't thank Milton enough. He was very through and explained every step he took to determine the true problem with my truck and how he was going to repair it. He is an honest person who really cared about my needs, found the real issue and saved me money. I will be using Your Mechanic and asking for Milton for any of my truck repairs and general maintenance in the future. It's so nice to know there are such good and honest people in the auto repair industry here in Las Vegas like Milton who are here to help. My truck runs perfect now and I feel safe on the road knowing it was repaired by such a knowledgeable and experienced mechanic. Thanks Milton...you are the best!!
2002 CHEVROLET AVALANCHE 1500 - FUEL PRESSURE REGULATOR - LAS VEGAS, NEVADA

Doug

31 years of experience
56 reviews
Doug
31 years of experience
He came on time and even though my vehicle was a headache he fixed it and told me other parts I should replace so that I can prevent any other problems.
1999 CHEVROLET ASTRO - FUEL PRESSURE REGULATOR REPLACEMENT - HEMET, CALIFORNIA

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