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Worn internal engine components i.e. rings/valves allowing oil to get into combustion chamber at a greater rate than can be burned off by ignition in chamber

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17y ago

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Related Questions

Can bad gas foul spark plugs?

yes


Do why spark plugs foul out?

Due to improper fuel-air mixtures.


What causes 1.9 tdi to hunt at idle?

A 1.9 TDI can hum at idle if the spark plugs foul. A clogged fuel filter can also cause this issue.


What causes oil?

An engine that burns oil will usually foul the spark plugs. That, in turn will cause ignition misfire, higher emissions and likely damage the catalytic converter.


What causes spark plugs to stop firing?

No spark from coil, bad plug wires, or bad plugs.


What causes oil burn?

An engine that burns oil will usually foul the spark plugs. That, in turn will cause ignition misfire, higher emissions and likely damage the catalytic converter.


What is the main reason spark plugs foul on a two stroke engine?

Gas mixed to rich


Why do spark plugs foul on dirt bikes?

spark plugs tend to foul because too much oil builds up around the plug and it cannot work correctly. *sometimes* you can actually remove the plug, clean it, re-gap it, and replace it in the bike.


Why do Spark plugs burn out?

Spark plugs don't really burn out, they foul out. A spark plug is used to ignite the fuel/air mixture squirted into the cylinder by the fuel injector. The plug sends a spark and boom small explosion. However gasoline is not 100% clean, so it leaves carbon deposits on the plug. Over time these deposits foul the plug.


Why would fuel foul the spark plugs after a few days?

My best guess would be the plugs aren't igniting the fuel and it's collecting on the plug.


What causes the engine to miss?

check spark plugs and wires


What causes a motorbike to splutter when accelerating?

start with the spark plugs