Spark plugs are rarely repaired on a car. It is easier to replace them and have the confidence of having dependable transportaion. If you look at the top of your valve cover(place wheve you put oil) towards the rear, you'll see a series of cords to 2 circular and 2 square black connectors. The circular connections are directly to your plugs and the square connectors are to your coil packs. Be sure to note which coil pack controls which plug. The easiest way is to replace is to first remove the coil pack(held on by 2 bolts 10mm in size, I think), replace the plug and then replace the associated plug. CAUTION!!! If you are replacing the plugs because of emissions and a check engine soon light... It very well might be a coil pack that has failed. It took me two months, an EGR, spark plug wires, 2 sets of plugs, an oxygen sensor and diagnostic testing to figure this out. One symptom is if your car loses power and stalls; especially on hills or high stress situations.
2002 galant , can't find the spark plugs
how to change number 6 spark plug on a 2006 mitsubishi galant
pcm or crank sencer
you need to take the intake off to get to the back three plugs...
if its got a v-6 in it it has 6, if its a 4 cyl. it has 4
A tune up for a Mitsubishi Galant can mean several things. But the most common focus is replacing the air filter, fuel filter, spark plugs, wires and routine maintenance.
It is most likely your spark plugs and or wire set. All of this is easy to change. There is another forum that explains how to change your spark plugs for your Galant.
Most had a V-6 under the hod, which would mean 6 spark plugs.
remove intake manifoled to access back 3 plugs. time consuming but can be done
You must remove the entire intake manifold for you to have access on the three spark plugs located underneath it. it is advisable that a qualified Mitsubishi technician should do this.
When changing the spark plug gaps it is important to remember the gap size. The gap size for a 2003 Mitsubishi Galant 4 cyl spark plugs is 0.044 inches.
make sure the gapping on the plug is correct to what the vehicle needs