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What Causes Oil on Spark Plug Threads and in Spark Plug Wells?

by Car Service and Repair 4 months ago in self driving
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Schedule an appointment with a car services in Reading garage as soon as you discover oil in the spark plug wells or the spark plug threads. If this issue is not resolved sooner rather than later, it could result in your entire engine failing.

Spark plugs are critical components of every car because they generate the spark that ignites the fuel and air mixture in the internal combustion chamber.

Oil is also necessary for lubricating the engine's components while it is in operation. Your engine will overheat if you don't have enough oil because of the friction caused by moving components rubbing against each other.

Oil pouring into the spark plugs, on the other hand, is never a good thing. This will cause major issues with your engine's functioning and performance. Oil leaking into spark plug wells should be checked as soon as possible by taking your car to a car services in Reading garage and allowing a skilled car technician to identify and repair the problem.

Perhaps you were performing normal maintenance and noticed oil on your spark plug threads. Perhaps you were investigating why your vehicle's oil level was low and noticed oil-covered spark plugs. Take your car to a car garage in Reading to have this issue investigated by a car mechanic and repair the issue before it becomes worse.

In any case, you're certain to have a few questions now that you've discovered it. Is it normal for oil to flow into the spark plug wells? Is this a major issue, and what's causing it?

Reasons Why Oil Leaks into a Spark Plug Hole

You'll be able to tell if oil is seeping into the spark plugs since there will be symptoms. You may notice blue exhaust flowing from the tailpipe or more frequent engine misfires, in addition to reduced engine performance.

To maintain your engine running, you'll have to add additional oil on a regular basis. If you don't, your engine can overheat, perhaps causing internal damage or even a fire.

To find out how to avoid this, you'll need to know what causes oil to seep into the spark plugs. The following are five of the most common oil in spark plug well symptoms and causes:

1. Faulty Valve Cover Gasket

The valve cover is a metal piece that sits on top of the engine. Between this cover and the top of the engine cylinder head is a valve cover gasket. This maintains the engine sealed and prevents oil leakage. However, as time passes, the heat from the engine will wear down the valve cover gasket. It will begin to fracture and become hard or brittle over time, allowing oil to flow through the gasket. If you identify the problem early enough, you may simply replace the leaky valve cover gasket. Otherwise, owing to a lack of oil, your engine may be permanently damaged.

2. Old Valve Guides Seals

Vehicles rely on valve guides to help manage air intake into the engine. The valve guides basically keep the valves in place while the engine is running. The only issue is that when you drive your car, the valve guide seals gradually wear out. Because damaged valve guide seals can't prevent oil from seeping into the spark plugs, you'll probably need to replace them at some time. If this happens, your engine may develop a number of issues that may cost hundreds of pounds to repair.

3. Faulty O-Rings

O-ring seals are located beneath the spark plug tubes. Oil will seep through an O-ring that has been worn or cracked, and it will reach the spark plug tube. You'll need to address this issue promptly before the engine suffers too much damage. You'll need to change the spark plugs as well because the oil has saturated them.

4. Faulty Piston

If a piston is subjected to too much heat, it might crack. Then it will begin to produce banging noises and rattle a little. More importantly, a faulty piston will allow oil to seep into the spark plugs, causing a slew of issues. Your engine will misfire regularly, and its performance will deteriorate. All of these factors will cause your engine to fail if the piston is not changed as soon as possible.

5. Faulty Piston Rings

An internal combustion engine's pistons have piston rings on the top and bottom. The compression rings' role is to prevent oil from entering the combustion chamber and to remove excess oil from the cylinder walls. However, if your piston rings are worn down, they will be unable to prevent oil from flowing into the spark plugs. There may also be blue exhaust and a smell of engine oil that pervades the interior.

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Car Service and Repair

Car Services in Reading prides itself on providing great customer service, fair and competitive pricing along with great quality work that leaves you happy with the entire process.

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