This just may be how you typed it that doesn't sound right...but I will add for the fun of it.shorty4444 said:you also can use d7ea, but it is recommended to use the d9ea's because they burn hotter.
Probably not the best idea to do this on an aluminum head with these small plugs. It might trash the threads.FOG said:A trick I used in the old days before I had a air compressor was to loosen the plugs a lot. then reconnect the wires and start the engine at Idle, the leakiong compression gas would blow out the dirt. Never tried it on an EX though.