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If the spark plug end (combustion chamber end) is coated with dry, black soot, it indicates weak spark or incomplete combustion. Note that this doesn't necessarily mean that the plug is bad; weak spark more often indicates a faulty coil or plug wire or, sometimes, an overfuelled cylinder.
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What causes weak spark?
Sometimes a weak spark in an internal combustion engine can be caused by dirty spark plugs. It can also be caused by weak distributor coils.
Where is the spark plugs on a 2000 ford f150?
i know if you have the 5.4L V8 you will have coil packs. not spark plugs
Where are the spark plugs located in a 2001 Ford Ranger and how do you change them?
spark plugs are located in the side of the head you remove them with a spark plug socket tip for you if you dont know where spark plugs are or how to remove them, i would get someone that does know, to do it or at least show you
How do you know when to replace spark plugs?
You should replace the spark plugs when your car won't start first time but does eventually.
1994 dodge ram 1500 5.9 I replace wires plugs pickup coil rotor and cap strong spark at the coil but at the ignition wires it has a weak spark.?
If you haven't already,Try replacing the plug wires and spark plugs and regap the plugs to factory spec.
Where are the spark plugs located on Toyota Rav 4?
When changing spark plugs it is important to know their location under the hood of the car. For a Toyota Rav4 the spark plugs are under the engine cover that has the car symbol on it.
How do you change spark plugs in a 2004 Nissan frontier?
It can be complicacated since on some models the spark plugs are difficult to get to but I would recommend to find the spark plugs first and then double check to make sure you know where they are.
Where are the spark plugs in a ford fiesta finesse 2003?
if you don't know where plugs are,,,you shouldn't be touching them
91 cavalier What causes spark before the coil but little after at the spark plugs?
Distributor cap & rotor button or spark plug wires may be bad. Coil could be weak.
What is wrong if my car will crank over and start but as soon as you let up it dies?
it could be weak spark plugs.
Where do the spark plugs wire go in your 94 Honda civic dx?
It is important to know how the engine of a car works. In a car, the spark plug cables connect to the vehicles spark plugs.
When do you change your spark plugs?
when do you change spark plugs
