car threw CEL with code p0300..."random misfire in cylinders" i was told i could be due to my plugs ...what do you guys think?

attached are pics oy my spark plugs...are they ok?






is that brown stuff normal

 

no offense, but get a better camera and we might be able to tell ya

 

looks like it's fouled... it's pretty rusty at the edge.

 

i was taking it with a decent camera im just not good at taking macro...any advice?

 

bump fr a little better pics?

 

Just buy new ones lol not a big deal

 

yeahi already put new ones in...but i was just wondering if the plugs looked normal

 

Random misfire usually has to do with the coil packs in the Lancers, not the spark plugs. If you want to see plugs in bad conditions I'll have to find mine (The set that was in when my pistons blew).

You can see carbon buildup to the point of nearly fouling, hot spots from it running lean, and physical damage on the one from cylinder 3 where the largest failure took place, leaving about 1/5th the ring land missing and the piston terribly chunked. I wish I could get my stupid WAN working properly to get the pictures off my PDA, but I have neither the time nor the patience to deal with it presently.

Anyway, it's probably a coil pack.

 

If you scroll to the right there is a clear image of a burnt plug. Replace those with some Platnum Plugs man. Look in your Manual for Product #'s, and gap sizes.

 

What do you have on the car mods wise... it seems like something is leaning you out considerably.

 

mods: AEM CAI, Magnecore wires, RRM Piggy, greddy evolution exhaust...

how hard is it to change out the coil packs?...what do i do to fix the misfiring? without paying the dealer a lot of money?

 

is the misfiring causing anything harsh to the engine?...im kinda worried about this whole thing

 

bump?

 

I hade the same thing. The dealer I went to never changed my plugs at 25,000 km. They should have been done, expecially the way I drive. Chcange your plugs to Platinum ones, get some magnicore wires and get a tune up done (Basically injector cleaner on top of that stuff) and you will be fine.

 

changed my plugs yesterday...i already have magnecores, is replcaing the coil pack needed...cus thats 120$...and i dont know how to put it in