There are several spark-plug-hole thread-repair kits available at nearly any auto parts store. With the right kit and a few hours, the damage can usually be repaired without even removing the cylinder head. If you are not comfortable doing this, then take it to a professional for repair. You do not want to ruin this head or you will then be spending big money.
If the engine is a 5.4L then the spark plugs are underneath these long wire caps. They sit deep in the engine so be careful when changing you can easily get them crossthreaded. They don't have much thread that goes into the hole.
Longer life, better spark
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.
if the spark plugs are black because your car is running too rich. your plugs are fouled.
Platinum spark plugs are better becacuse they last longer than plugs with traditionalcopper electrodes when they are worn out from electrode deterioration (which is the mostcommonreason for failure).They can last twice as long.Theymay notlast any longer if the plugs are fouledby depositsdue to other problems.
It is moderately easy to change the spark plugs on a Liberty, although it is rather tricky because of the gap between the spark plugs.
They last longer than platinum because they maintain their gap longer and dissipate heat better, other than that they are not necessarily more powerful or "better".
Check the threads for the spark plug, Im betting it was either crossthreaded or not tightened enough and worked itself out.
when do you change spark plugs
Because.
2002 galant , can't find the spark plugs
Take old spark plugs out put new spark plugs in