There is nothing set in stone as far as mlieage is concerned, there can't be. The reason is that the life of a spark plug depends mainly on what type of driving you do, and how good the gas is that you are using. If you use nothing but top grade fuel, and only drive on the highway, you are going to get a lot more life from the plugs than someone who uses cheap gas and drives stop-start constantly through town all the time. The Focus plugs are double platinum plugs, so you may get 100,000 mles out of them, that seems to be the general consensus, but it is really a judgment call on the part of the technician who pulls the plug out and examines it.
About every 50,000 miles.
According to the owners manual, they have platinum plugs that should be changed at 100,000 miles.
every 100,000 km
The manufacturer recommends that the spark plugs are changed every 30,000 miles. Many individuals have experienced a much longer life for the spark plugs.
Once on 1-2 year on regular spark plugs. Once every there years on High end spark plugs.
The spark plugs should be changed every 60-80,000 miles.
100K if they are platinum plugs, 50K if they are regular plugs.
the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs
about every 75000 miles
The 2003 Chevrolet suburban spark plugs should be changed every 30,000 miles. The life of the spark plug is dependent upon the driving habits of the automobile driver.
I think my 07 manual says 100,000 miles
Spark plugs are electrical components that should not have contact with any sort of fluid. The engine warning light is on as a warning for a possible electrical system issue.
A standard spark plug should last about 50K. A platinum tip plug should last 100K.
Check/replace Rotor Check for spark at plugs
opposite end of the spark plug wire from the spark plugs
I would replace the spark plugs after 50K, the wires and plugs again at 100K.
The spark plugs on a 1999 Mercury Cougar are located under the cover of the engine. The spark plugs should be changed approximately every 60,000 miles.
A standard spark plug, 50K. A platinum tip spark plug, 100K. This is an average we use on our fleet vehicles.
Standard spark plugs, 50000 miles. Platinum tip spark plugs, 100000 miles.