2007-12-26 01:57:16 · 5 answers · asked by ik 1 in Cars & Transportation ➔ Maintenance & Repairs
well the spark plug has a lot of electricity going through it and it burns or wears itself out
2007-12-26 02:01:47 · answer #1 · answered by bond1104 2 · 0⤊ 2⤋
Rich fuel air mixture.
If the engine is carbureted, suspect a dirty air filter.
On a fuel injected vehicle, it could be any of a number of items. It is less likely the air filter on a fuel injected engine. This is because the engine management computer compensates for this. The fuel air mixture is set by the engine management computer from information it receives from various sensors located in the engine compartment.
There are two sensors that are usually the problem. It could be the Oxygen sensor. It measures the exhaust gas temperature in the exhaust manifold. The temperature of the exhaust is a measure of the fuel air mixture.
The other common problem is the mass airflow sensor located between the fuel injection throttle body and the air filter. This measures how much air is entering the engine. This item is commonly overlooked. It is recommended that you clean this sensor each time you change your air filter. If this sensor is giving inaccurate information to the engine management computer, it may not set the correct fuel air mixture.
CRC makes a cleaner for this. Follow the link below for more information. This cleaner can be purchased at most major automotive parts stores.
A misfiring sparkplug will be wet from unburned fuel. If the is fouled with oil due to bad rings or valve seals, the spark plug will be wet with oil.
2007-12-26 10:03:32 · answer #2 · answered by Mad Jack 7 · 1⤊ 1⤋
A cylinder misfire can cause it and is the most probable cause. You may have a bad spark plug wire or ignition coil connection on that spark plug and engine cylinder. See number 7 in the spark plug reading chart below:
"7.CARBON FOULED
Recommendation: Spark plug heat range is too cold and/or
caused by extensive low-speed, short distance driving
Replace with the correct heat range of Autolite spark plug
Also caused by weak ignition system and/or rich fuel mixture
Fuel injection engines would produce carbon fouling from
clogged fuel injectors, vacuum leaks, and/or problem with
carbon canister/purge valve operation. Carburetor equipped
engines cause carbon fouling from improperly adjusted or
malfunctioning choke."
http://www.aa1car.com/library/misfire.htm
2007-12-26 10:12:19 · answer #3 · answered by bobweb 7 · 2⤊ 1⤋
The fuel mixture is too rich or you have bad piston rings and are burning oil.
2007-12-26 10:10:48 · answer #4 · answered by thebax2006 7 · 1⤊ 0⤋
dirty filter
2007-12-26 10:01:23 · answer #5 · answered by b.johne k 5 · 0⤊ 2⤋