If your Diamante is the Dohc 6 cyl. motor in it then you have to remove the entire intake manifold to replace the back 3 plugs I did it in about 4 hours with not many tools and I am a female. So it can be done.
you have to remve the intake manifold
Remove intake plenum, sorry, but this is a lot of work. Regards Martin
2002 galant , can't find the spark plugs
Think you might have to take off the intake manifold, it a process
its probably the spark plugs, they need to be changed i have an 03 diamante and the same thing was happening to me. I had the spark plugs changes and the problem was solved.
Every 30,000 miles except platinum plugs
how to change number 6 spark plug on a 2006 mitsubishi galant
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 do you change spark plugs
NGK platinum plugs
you need to take the intake off to get to the back three plugs...