
Main Causes a Spark Plug to Break Down
- Improper torque. Yet 90% of spark plug damage claims are due to improper installation. Not using a torque wrench when...
- Harsh fuels. Diesel fuel is very toxic and damaging to the body. When it enters your car’s engine, there are many...
- Not proper gapped. You should always choose your spark plugs very carefully because they are the...
Why do my spark plugs keep breaking or melting?
Spark plug tips are breaking/melting or falling of my Bosch Platinum Plugs. Center electrodes can be melted or eroded by thermal overload due to auto-ignition (i.e. knocking). If the auto-ignition/thermal overload is bad enough, you can end up with simultaneous damage to the center electrode and ground electrode(s),...
What causes a bent spark plug electrode?
One of the major causes of having a bent spark plug electrode is using the wrong plug in your vehicle engine. You have to make sure the spark plug fits perfectly inside the engine. Not even a millimeter of measurement should be incorrect.
What causes a spark plug to open up?
Your engine’s throttle body can also cause something to open up, bend your electrode, and close the gap of your spark plug. This one is related to overheating.
What happens when a spark plug is too long?
If the spark plug is too long or deep inside the engine, it will hit the piston/rod assembly. This physical contact with the piston will cause the electrode to bend.

Why does my Ford have a blowout spark plug?
Back to the main topic of why Ford has an issue with spark plug blowouts: Some say, it's because Ford only uses 4 or 5 threads to hold the spark plug from the factory. That's true in some cases, but we have had plenty of failures reported to us from our customers that had fully threaded spark plug holes as well.
Can a loose spark plug damage aluminum?
A loose spark plug, especially one that is held in above with an ignition coil can vibrate and damage aluminum threads. It actually would do less damage if it were allowed to back on out without being held by the coil.
Why do spark plugs go bad?
The most common cause of a spark plugs to go bad is due to the buildup of oil, carbon and combustion byproducts. Spark plugs are designed with an anti-corrosion coating that helps protect against elements in the engine from damaging them over time.
What does it mean when spark plugs are fouled?
A fouled spark plug may be an indication that a head gasket is beginning to leak and should be fixed immediately. 9. Type of engine oil. The type and condition of the engine oil. A good quality synthetic engine oil can increase the lifespan of a spark plug by 10%. 10. Paying no attention to your spark plugs.
Why is my platinum spark plug hot?
A loose wire connection usually causes a misfire which could lead to plugged up spark plug holes in the head that will cause hot spots on the platinum. Use a set of spark plugs that are designed for your engine. Using low quality plugs will wear out more quickly, so make sure you buy high grade ones.
Why do cars need spark plugs?
The spark plug is responsible for making sure gasoline ignites and runs through the air intake manifold , which leads up into each cylinder of your vehicle’s engine.
How long do spark plugs last?
The two most important factors in deciding how long a spark plug lasts before they need replacing are: 1 The quality and condition of your fuel. If you use high-octane gasoline, you will get about three months more out of your spark plugs before they need replacing. 2 The type and condition of the engine oil. A good quality synthetic engine oil can increase the lifespan of a spark plug by ten per cent.
How to tell if spark plugs need changing?
There are a few signs that will tell you that your spark plugs need changing, such as if there’s misfiring, rough idle, or hesitation in acceleration, the car is hard to start, the ‘check engine light is on , your engine is really loud, etc.
Do spark plugs smell?
Yes, spark plugs usually produce a foul smell from the exhaust when going bad. Whenever there’s incomplete combustion, raw fuel will likely enter the exhaust, resulting in a smell similar to rotten eggs or sulfur. This can be an indication that a spark plug isn’t working properly.
