strtrcng426

iTrader: (21)

Hey guys I need help!!! I just put ngk spark plugs in and the car has 74k. I tried going for emmisons but i have a check engine light and it is a radom misfire in all cylinders. anyone has any idea why its doing this ?? Also and for low efficency in the catylic converter. any ideas ??

thanks
sakib

bbyevo8u

iTrader: (14)

did you have this could before you put the spark plugs in? you probably have a bad cat did you ever replace it in 74k miles if not its bad! "you should you should get a compression test done just to see how strong your engine is at 74k but that has nothing to do with your problem" do you have any modes?

bbyevo8u

iTrader: (14)

ment to ask ya if you had the code before you put the spark plugs in!?

Curt@MrLed

iTrader: (107)

What evo, what plugs, was the problem there before.

tweakdsm

iTrader: (38)

show us the codes the car is throwing... I would do compression test.

what year is your evo, what kind of NGK's you installed.

Remeber if your CE goes away or you get it fixed, you need to put some miles before you go to emmisions, so Ecu can re-learn all the codes.

bbyevo8u

iTrader: (14)

8's and 9's use diffrent plugs?

tweakdsm

iTrader: (38)

yes sir, E9 are different and more expensive