JspecSC3

iTrader: (4)

Ive tried searching to see if anyone had posted something about the gapping for the spark plugs but found nothing. Can anyone help me out? The spark plugs were supposably made for the SC300's 2JZGE motor but when I looked at them they seemed to be kinda spaced out. I put them in anyway and now im getting misfire at idle. I need helpppp

got_trd

You didnt measure the gap before you put them in? I have mine gapped at .30, but I have a 1jz. The 2jz-ge gap should be around .44 or something

reamemiya

iTrader: (1)

.44 is factory gap. i have .32, but i'm turbo

got_trd

Oh ok... if your boosted, you want to stay around .28-.32. Depending on how much is is missing at high rpm if any. If you are running more than stock boost than you should close the gap a little.

JspecSC3

iTrader: (4)

ahhh yes very nice. Now I have to take out everything again and gap those things. Thanks everyone for the help. I will keep the gap for the turbo plugs in mind since my future plans are to boost. Thanks everyone. I knew I could depend on CL members.

reamemiya

iTrader: (1)

depending on what plugs you got why not just run factory gap as of now. then when you go turbo get new plugs with tighter gaps because you'll have to change them out anyways.

JspecSC3

iTrader: (4)

.44 is too wide of a gap. I corrected my gap spacing them out at .044. The motor was idling smoother than before with just a little bit of misfire because i was gapping them the savage way. But no worries, my MSD upgrade will take care of that problem. For anyone else that wants to know, the correct measurement is .044.

Devor

iTrader: (1)

Hey guys I jst swaped my plugs and wires out but didnt find anything on the gap size til now so I set them at 28mm but I have a 93 stock 5-speed 2JZGE will this be ok? Im trying to pass smog and finally get this project on the road.

good2go

iTrader: (6)

No it won't. Why didn't you just set them to stock gap since your are a running stock engine?

Devor

iTrader: (1)

well thats what i was planning on doing. But when I took the old plugs out all the gaps were different sizes like whoever swaped them out last time didnt measure them, and the new ones were all different in sizes to so I just wanted to make sure they were all balanced. I jst wanna be able to pass smog and now I think I will(fingers crossed)

Devor

iTrader: (1)

wait so your telling me I have to go back and gap them to .044 I gaped them at .028 will the car drive the same? or in other word can I pass smog with them gaped at .028?

stockhatch

iTrader: (12)

.028 is tight. It may miss at idle with a gap like that, but it should drive ok besides that. I would open the gap. it will run cleaner if you do.

Devor

iTrader: (1)

shoot so your telling me to go back and spread the gap a little more? That job was a pain in the neck to do. Theres no way to pass smog with them gap'd at .028 =/

stockhatch

iTrader: (12)

It may pass, but I know my car misses every so often at idle and I have mine gapped down to that range. I have been too busy to open them up again, but I don't have to worry about smog either. My car idle noticeably better with the factory gap.

The only reason mine are gapped so low is because I was troubleshooting an ignition issue that turned out to be a neutral rev limiter. Once I figured out the problem and fixed it, I never went back and opened the gap back up on my plugs.

Devor

iTrader: (1)

alright I guess the only thing to do i take it in an see if she passes Im keeping my fingers crossed