Mercedes-Benz GLA250 Oil is leaking into spark plug well Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(50)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(50)

Oil is leaking into spark plug well Inspection Service

How much does a Oil is leaking into spark plug well Inspection cost?

On average, the cost for a Mercedes-Benz GLA250 Oil is leaking into spark plug well Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2015 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2021 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2016 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$112.52 - $125.67
2019 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$104.99 - $112.48
2022 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.02 - $112.55
2020 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2018 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$99.99Shop/Dealer Price$109.87 - $117.28
2017 Mercedes-Benz GLA250L4-2.0L TurboService typeOil is leaking into spark plug well InspectionEstimate$99.99Shop/Dealer Price$110.24 - $117.94
Show example Mercedes-Benz GLA250 Oil is leaking into spark plug well Inspection prices

Oil leaking into the spark plug wells is an indictor of a fairly serious problem that should be inspected and repaired immediately. It is almost always due to a failing gasket or O-ring but can also be the result of a failing piston or worn valve guides.

Oil making its way into the spark plug wells will drastically affect the engines performance, leading to misfires, increased oil consumption and blue exhaust. In extreme cases, it can even lead to an engine fire. If the vehicle is exhibiting any of these symptoms, the spark plugs should be inspected immediately.

How this system works:

his issue involves two systems, the spark plugs and the engine lubrication system.

The main function of a spark plug is to ignite the fuel/air mixture in the combustion chamber. Electrical energy is transmitted through the spark plug where it jumps the gap and the spark ignites the gasoline and air mixture. Spark plugs also pull heat out of the combustion chamber, working as a heat exchanger, it pulls thermal energy from the combustion chamber and transfers it to the cooling system.

Engine oil is used to lubricate the moving parts of an engine. The constant moving of the engine parts generates heat, as well as wear and tear. Engine oil helps to minimize the friction and dissipates the heat generated by the engine.

The oil pan is where engine oil is stored. A typical oil pan will hold up to 6 quarts of oil. When the engine starts, the oil pump pulls oil from the oil pan through a part called the pickup tube. The oil then moves to the oil filter, which removes dirt and debris before it is sent to the various parts of the engine via spurt holes. Eventually it heads back to the oil pan to start the process over again.

Common reasons for this to happen:

  • Leaking Valve Cover Gaskets: The valve cover is a metal part found on the top of the engine, which seals the engine and helps prevent oil leaks. Between the valve cover and the engine are gaskets that tend to fail over time. Due to the high temperature of the engine the gaskets can get brittle, and start to leak. It is possible for the oil to leak into the spark plug wells. Leaking valve cover gaskets need to be repaired as quickly as possible, failing to do so can lead to further damage to the engine.

  • Failing O-Ring Seals: There are O-Ring seals at the bottom of the spark plug wells and if a seal starts to fail, oil can leak past these seals and into the spark plug well. Again, this issue should be repaired as soon as possible and the spark plugs should be changed as well.

  • Failing Piston Compression Rings: The pistons in a car’s engine have compression rings at the top of the piston and the bottom. These rings are set in grooves in the piston and help scrape excess oil from the cylinder walls and prevent oil from getting into the combustion chamber. If these rings fail, oil can make its way into the spark plugs wells. Other symptoms of failing compression rings include increased exhaust that is blue and smells oily.

  • Failing Piston: A piston that is running too hot can develop a hole or crack. The most common symptoms of a failing piston include rattle and knocking noises while the car is running, excessive oil burning as well as a loss of power and engine misfiring. It can also lead to oil in the spark plug wells. This is an extremely serious condition that needs to be repaired as soon as possible.

  • Worn Valve Guides: Valve guides help to regulate air intake by keeping the valves in place while the engine is running. Over time, valve guides can become extremely worn and will require replacement. Blue smoke and oil or ash in the spark plug wells is a common symptom of failing valve guides. Worn valve guides can lead to more serious engine problems and should be repaired as soon as possible.

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the Oil in Spark Plug Well issue, ​and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

A mechanic will check your valve cover gaskets, O-Ring seals, pistons and other important components. The mechanic may need to crank the car and test drive it to pinpoint the cause of the leak and produce an accurate diagnosis.

How important is this service?

Oil in a spark plug well is a very serious problem that should be repaired as soon as possible. It can do extensive damage to the engine, such as broken or warped pistons and valves. Eventually, if not repaired, the head gasket can result in the fatal destruction of the engine. There is also the potential for an engine fire if the spark plugs ignite the oil.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(50)

Rating Summary
48
2
0
0
0
48
2
0
0
0

Gustavo

15 years of experience
61 reviews
Gustavo
15 years of experience
Mercedes-Benz GLA250 L4-2.0L Turbo - 20,000 Miles Maintenance Service - Teaneck, New Jersey
Good guy and everything he did was seamless, didn’t have to do a thing except give him my car keys!

Adam

17 years of experience
233 reviews
Adam
17 years of experience
Mercedes-Benz GLA250 L4-2.0L Turbo - Oil Change - Lake Worth, Florida
loved him...timely, professional, good work

Justin

8 years of experience
372 reviews
Justin
8 years of experience
Mercedes-Benz GLA250 L4-2.0L Turbo - Oil Change - Hollywood, Florida
Justin is timely and courteous.

John

27 years of experience
1027 reviews
John
27 years of experience
Mercedes-Benz GLA250 L4-2.0L Turbo - Brake Pads Replacement (Front, Rear) - League City, Texas
He completed my service in a very professional manner. He also was neat, clean and organized while performing my service. I was very satisfied with John's quality of work.

Excellent Rating

(50)

Rating Summary
48
2
0
0
0
48
2
0
0
0
Number of Mercedes-Benz GLA250 services completed
550+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Replace a Clutch Cable
Clutch cables can wear out from age and clutch overuse. The location and build of your clutch cable will depend on the make and model of the car.
How To Keep Your Car From Overheating
Monitoring your coolant level, turning the A/C off in very hot weather, and regular inspections will help you avoid having an overheating car.
How to Troubleshoot a Car That Has Extra Bounce or Sway
Bounce or sway while driving a car can be caused by faulty struts, shocks, or worn out tires. Check and inflate car tires to begin the diagnosis.

Two codes coming up: P0449 & P0455

The most likely cause for these two codes is that the emissions control evaporative canister vent solenoid needs to be replaced. You may also want to check your gas cap to make sure it does not leak; it may be...

brake pedal goes straight to the floor after replacing all 4 brake lines and pads and calipers

This brake system has an anti-lock (ABS) system. This system prevents wheel lock-up during a hard braking event to came tire contact area on the road and effective. When air is introduced to the brake system it can get trapped...

Rumbling noise coming from left front side - 2008 Mercedes-Benz R320

Hi there. It would seem to be the right front wheel bearing (https://www.yourmechanic.com/services/wheel-bearings-replacement) that is making the noise. The vibration could be from the drive shaft center support bearing being worn out. To check if the bearing is worn, push...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com