So I was about to change spark plug on my 2009 mazda6 V6, I bought six of these spark plug according to NGK website:
NGK ILTR6B11 Laser Iridium Spark Plug
NGK site says these are preset to 0.044, 2009 mazda manual says for the V6, GAP should be 0.051 - 0.057
so I have three options:
regap the NGK to 0.54 and put them in, from what I read the tips on these plugs are very easily damaged…
leave them at the current gap and install them at 0.044, would that cause any problem since mazda calls for a different gap size??
don’t change the plug at all, my car has 123k miles, but no misfire or noticable mpg drop, one guy told me they can go to 150k or 200k miles no problem.
The shop will charge me $180 to install them, plus the plug I paid $60 that’s $240… I miss the days I can just change the plug myself.
what should I do???