Nissan 350Z 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

(280)

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

(280)

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 Nissan 350Z 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
2008 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
2005 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2003 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2004 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$104.99 - $112.48
2009 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.02 - $112.55
2006 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2007 Nissan 350ZV6-3.5LService typeOil is leaking into spark plug well InspectionEstimate$99.99Shop/Dealer Price$109.87 - $117.28
Show example Nissan 350Z 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 Nissan mechanics

Real customer reviews from Nissan owners like you.

Excellent Rating

(280)

Rating Summary
259
11
2
4
4
259
11
2
4
4

Choeun

15 years of experience
181 reviews
Choeun
15 years of experience
Nissan 350Z V6-3.5L - Check Engine Light is on - Elk Grove, California
Knowledgeable and friendly

Joe

43 years of experience
821 reviews
Joe
43 years of experience
Nissan 350Z V6-3.5L - Brake Pads Replacement (Front) - Saint Petersburg, Florida
Great!!!

AJ

9 years of experience
21 reviews
AJ
9 years of experience
Nissan 350Z V6-3.5L - Brake Pads Replacement (Rear) - Kent, Washington
AJ was great to deal with, very polite. He was on time, had the right tools for the job and was finished within the estimated hour. Very happy with the end result.

Larry

13 years of experience
17 reviews
Larry
13 years of experience
Nissan 350Z V6-3.5L - Starter - Fort Worth, Texas
From the moment Larry arrived at my home, and to the time he left, Larry's personality was outstanding. Very well mannered. I have a 2004 Nissan 350Z Touring Convertible. Until I used Your Mechanic, only the Nissan Dealership has taken care of my Z. In the future, when my Z needs major attention under the hood, I will be requesting Larry to address the issue. Job well done Larry. Edward (Eddie) Deems, Jr. NMMI HS 59' JC 60' 61' NMMI Alumni

Excellent Rating

(280)

Rating Summary
259
11
2
4
4
259
11
2
4
4
Number of Nissan 350Z services completed
3080+
services done by our mechanics
TOTAL NUMBER OF EXPERT Nissan MECHANICS
1500+
experts on our platform

Recent articles & questions

Why You Should Adjust Your Mirrors Before Your Drive
Your Your car has three mirrors that provide visibility and enhance safety on the road (as well as compliance with the law). These are your rear view mirror, and a car side mirror on both the driver and passenger sides...
P0197 OBD-II Trouble Code: Engine Oil Temperature (EOT) Sensor Low
P0197 P0197 code definition Engine Oil Temperature (EOT) Sensor Low What the P0197 code means This code specifically means that the resistance value the powertrain control module (PCM) sees is low in comparison to the predefined specifications. This can possibly...
P0435 OBD-II Trouble Code: Catalyst Temperature Sensor Bank 2
P0435 code means the oxygen sensors readings falls outside of the expected parameters due to fuel in the exhaust system, or injector malfunction.

Vehicle overheated poor ac cooling and gas mileage

Hi there: Changing the radiator, hoses and thermostat does not typically negatively impact fuel economy (https://www.yourmechanic.com/services/car-is-getting-worse-gas-mileage-inspection) or AC issues. However, the installation of those items might, especially if the serpentine belt was installed incorrectly. However, with Hybrid models, the two...

Car won't idle, sputters and shuts off. 1995 BMW 318is

Hello there, a few different faults could cause this issue on your 1995 BMW 318is. When oil and coolant mix, the usual suspect is the head gasket. The mixing of coolant and oil may take some time to develop and...

All rotors warped - 2009 Kia Borrego

The braking system must be checked over a little more closely. Warped brake rotors can also be caused by malfunctioning brake calipers that are not releasing a they should. This can be caused by the caliper itself or a blockage...

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