good day all im not real good with honda the problem im having is melting the plastic peice that goes on the spark plug. its an 04 had a 1.8 had a v tec put in i thinkk they used the same ones. any idea why they would melt(wrong lengh maybe) any help would be great.

 

Using cheesy aftermarket wires, or-- the wrong plugs and/or improperly torqued so combustion gasses are leaking out around the plug threads.