LanEvoDemon

iTrader: (5)

Hey guys, I just changed my spark plugs and changed my hks filter.

After this, I started getting backfire. pop pop like every other second

Also at idle, my wideband was reading a higher number.
before it was around 15-16. now it's at 20-22 afr/lambda

I put the old plugs back in and the car was still shaky
and reading a high afr number around 17-18, and eventually
backfired, BUT not as frequent.

I pulled each one, one by one and couldn't figure out if
just one of the plugs are bad.

coilpack? what could it be?

thanks

MrMejia

iTrader: (2)

did you check the resistance's on the coilpack and the plug wires? you can check with an ohmmeter or something similar. I believe resistance on secondary coils are between 8.5-11.5ohms. The spark plug cable resistance should be no greater than 19ohms. hope this helps some.

MrMejia

iTrader: (2)

I think if this is fine then your cams might be the culprits. could use some good tuning.

LanEvoDemon

iTrader: (5)

no i didn't check the resistance, but could the coilpack have gone bad after changing my spark plugs?

i just got tuned for my new cams w/ my safc and wideband.
but i doubt the tune is that sensitive that a spark plug change
and filter could affect it.

at first i thought it was the better flow w/ my new filter
because the wideband was reading leaner,
but i was getting backfire so i was confused.

LanEvoDemon

iTrader: (5)

i went back out and regapped the new plugs to .028
and it's still backfiring. Checked and rechecked all
the wires.

BOV isn't going off either...what does that say..?

EvilDylan

iTrader: (3)

im pretty sure that .028 is a bit too big.

mine are gapped at .025, i tried them at .027 once and it misfired like crazy.

what plugs did you use?

LanEvoDemon

iTrader: (5)

ngk bpr7es

my car is fine...just stared at my wires for a while and figured
out that i just plugged the spark plug wires back in the wrong
coil packs....DOH!

runs fine now

stressing over my mistakes...you live and learn

mr0072003

iTrader: (15)

great to hear....I hate when I so dummy things like that.......get everone one Evom worked up and everything.......