Mercedes-Benz 420SEL Fuel Pressure Regulator Replacement at your home or office.

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Average rating from customers who
received a Fuel Pressure Regulator Replacement.
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$546.22 - $556.22

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Average rating from customers who
received a Fuel Pressure Regulator Replacement.
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Fuel Pressure Regulator Replacement Estimate for Mercedes-Benz 420SEL

Mercedes-Benz 420SEL Fuel Pressure Regulator Replacement costs $551 on average.

CarServiceEstimateShop/Dealer Price
1988 Mercedes-Benz 420SELV8-4.2LService typeFuel Pressure Regulator ReplacementEstimate$1017.45Shop/Dealer Price$1271.29 - $1986.17
1989 Mercedes-Benz 420SELV8-4.2LService typeFuel Pressure Regulator ReplacementEstimate$1017.45Shop/Dealer Price$1271.18 - $1985.99
1991 Mercedes-Benz 420SELV8-4.2LService typeFuel Pressure Regulator ReplacementEstimate$1017.45Shop/Dealer Price$1271.29 - $1986.17
1990 Mercedes-Benz 420SELV8-4.2LService typeFuel Pressure Regulator ReplacementEstimate$1022.45Shop/Dealer Price$1275.03 - $1988.97
1987 Mercedes-Benz 420SELV8-4.2LService typeFuel Pressure Regulator ReplacementEstimate$1017.45Shop/Dealer Price$1274.23 - $1991.32
1986 Mercedes-Benz 420SELV8-4.2LService typeFuel Pressure Regulator ReplacementEstimate$1017.45Shop/Dealer Price$1269.15 - $1982.43
Show example Mercedes-Benz 420SEL Fuel Pressure Regulator Replacement prices

Fuel Pressure Regulator Replacement Service

What is the Fuel Pressure Regulator all about?

Cars need to run at a specific fuel pressure. The regulator controls the fuel pressure and returns any excess fuel to the tank. The regulator is important to ensure that the injectors operate properly. If the regulator malfunctions, it can cause the engine to flood. In extreme cases, a flooded engine can be a fire hazard.

You may see liquid on the floor near the exhaust pipe (raw gas dripping from the tail pipe). You may also notice black smoke when the engine is running (partially burnt gas produces black smoke). Not only will the car get poor gas mileage, it also may not pass an emissions test.

Fuel Pressure Regulator-MATROX-1

Keep in mind:

Some fuel regulators are located in the tank as part of the fuel pump assembly. If the fuel pressure regulator has gone bad, it can leak fuel in the engine, contaminating the engine oil.

How it's done:

  • Scan the computer system in the car for trouble codes.
  • Inspect fuel pressure regulator for leakage and proper operation.
  • Inspect for any broken vacuum lines.
  • Remove and replace fuel pressure regulator if it is bad.
  • Change the engine oil and filter if the oil is found to be contaminated.
  • Clear any diagnostic trouble codes.
  • Test drive the vehicle.

Our recommendation:

Any time that you notice something potentially wrong with your fuel system, you should schedule an inspection. There are many signs that a fuel pressure regulator is malfunctioning, and all should be taken seriously. If you notice that your car is getting poor mileage, has gas leaking, has black smog coming out of the exhaust, or isn’t running smoothly, contact a mechanic. A malfunctioning fuel pressure regulator will often illuminate the Check Engine warning light, which is always a sign to schedule an inspection.

What common symptoms indicate you may need to replace the Fuel Pressure Regulator?

  • Poor gas mileage.
  • Smell of gas in the engine compartment.
  • Fuel is leaking.
  • Black smoke coming out of the exhaust (tail pipe).
  • Failed emissions test.
  • Check engine light is on.

How important is this service?

When gas is sent from your gas tank to your engine, the fuel pressure regulator makes sure that the fuel pressure is optimal. The fuel pressure regulator is responsible for returning excess fuel to the gas tank, and making sure that the fuel injectors get the perfect fuel pressure. When the regulator malfunctions, the fuel pressure will not be controlled, and your engine will not run optimally. Your engine will also be at risk for fuel flooding, which can result in serious damage and even fire.

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Meet some of our expert Mercedes-Benz mechanics

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Excellent Rating


YourMechanic Mercedes-Benz 420SEL Service

Average Rating

5/5

Number of Reviews

11

Rating Summary
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Dwaine

43 years of experience
39 reviews
Dwaine
43 years of experience
Mercedes-Benz 420SEL - Oil Cooler Hose (Automatic Transmission) - Brandon, Florida
Great experience, very polite and knowledgeable mechanic.

Patrick

31 years of experience
1054 reviews
Patrick
31 years of experience
Mercedes-Benz 420SEL - Car is not starting - Pflugerville, Texas
Very good.

Christian

20 years of experience
68 reviews
Christian
20 years of experience
Mercedes-Benz 420SEL - Check Fuel System - Hayward, California
Very professional and very knowledgeable!look forward for him working on my car in the future

Tien

21 years of experience
901 reviews
Tien
21 years of experience
Mercedes-Benz 420SEL - Power Window Switch Replacement (Passenger Side Front, Passenger Side Rear) - Oakland, California
Tiens was very nice to work with. He fixed 2 things and ordered parts for other items.

Excellent Rating


YourMechanic Mercedes-Benz 420SEL Service

Average Rating

5/5

Number of Reviews

11

Rating Summary
11
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Number of Mercedes-Benz 420SEL services completed
121+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
800+
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