Spark Plug Question

[Khronik]

You may have seen my other thread about power loss...
I replaced my spark plugs a couple weeks ago thinking it was causing my misfire

Threw code for CYLINDER 4 MISFIRE (that plug came out with electrodes almost touching each other), replaced the plugs with BKR5EIX-11's "NGK Iridium IX's"

I NOW throw a RANDOM CYLINDER MISFIRE code, plugs = problem??

[NissanFairladyZ32]

Ur using the wrong plug first off all, NGK- 6b11b

try swaping the coilpack to a diff cylinder and see if the misfire moves, that would void out the sparkplugs

[Khronik]

maybe i went wrong getting them from autozone?...

they pulled up alot of different plugs for the 300 and I went those since they were the "highest quality" NGK's they had

[evildky]

fist of all the sprak plug only has 1 electrode, thats the thing coming out the middle of the body of the plug that shoots the spark, the metal thingy that comes off the outer body of the plug and extends over the plug is the ground strap, it's what the spark jumps to, and they should be very close, the OE gap is something like .040 give or take, irridiums are a waste of money, set the gap and check for codes

[Khronik]

aight then in that case the ground strap was contorted and pretty much touching the electrode, you could fit a piece of paper in between them if you were lucky

but my question is can the spark plugs be the cause of going from a cyl4 misfire to a random cyl misfire given i changed the plugs?

[evildky]

yes a gap that tight can cause random misfires especially if you ahve that issue in multiple cylinders