DIY: Spark plug change

[fuki]

Just completed the job and it took about 2 hours and I am no mechanic by any means. Although I did mess up connecting the two rear coils on the driver side and that caused the engine to have problems on the initial fire up. I see the importance of making sure all of the wires are marked properly before taking them off or doing one at a time. Also the passenger side is a mother bear compared to the driver side. I also dropped a fastener that holds on the wire harness and the dealership did not stock those bolts; I ended up at a hardware store and found the same bolt for less than a dollar.
Thanks to everyone who put this DIY together, it really helped.

[Hi-Tech_G]

LMAO....+1000

Originally Posted by gizsf

I highly reccomend some work gloves, last time I did mine, I somehow ended up with a few good cuts and missing some skin om my knuckle.

Nice write up bro. I noticed your plugs really needed some changing. Have you noticed any difference in the vehicles performance?

[pdjafari]

I want some donuts OINK OINK !!! lMAO

[Boston]

Not sure of the firing order but the plug closest to the fire wall on the drivers side came out of the cylinder head with oil on it. The tip of the coil pack also had oil on it. Prior to the plug change I didn't notice a loss of compression. I'm not too concerned right now but if I start to foul the coil pack it's gonna be a bitch of a job. I've seen small quantities of oil in other cars but wasn't sure if it was common to the G35. Has anyone else observed small quantities of oil on any of the plugs during a plug change? Btw, the other 5 plugs were clean and had normal wear.

[Boston]

^ Ok, just a follow up on the oiled plug. Ran the car hard this morning and no issues. Pulled the plug about an hour after the run and it's clean. There is still a small amount of oil in the socket and on the tip of the coil pack but nothing on the bottom of the plug.

[Still2Slow]

Should we index the plugs when changing them? What size washers would you all recommend?

[kjgspot]

hey was up guys..... i just did my spark plug change it took me like an hour in ahalf... the instruction that u gave us was so easy and straight to the point... very well done... not to bad for not being a mechanic...lol

just one questiont.....when you do the spark plug change is it normal for the service engine light togo on..? one mechanic told me that it does that and that it just needs to reset itself.....

could anyone help me and tell me if that is true?, and if not then what should i do ? thanks foryour help guys

[DrrSeuss]

when should the plugs be changed on our cars?

[shdowflare]

Originally Posted by DrrSeuss

when should the plugs be changed on our cars?

I'd like to know this too.

In addition, what do you guys know about the Iridiums vs. the OEM plugs?

[DrrSeuss]

The OEM plugs are platinum vs. iridiums. The ones on the newer G's are iridium and the nismo ones are also iridiums. A side by side has not been done yet but I'm sure iridiums would be beneficial to us. I'm assuming that since our plugs are platinum, there should be changed every 100k miles.

I'll be changing mines out for iridiums @ 60k miles.

[bythabay]

Spark plug replacement (part 1) (part 2) (part 3)

[UR2EZ]

PLEASE READ: mark the front of the plugs, the side with the gap, with a sharpie.

when you are tightening them, try to get the front side to face the intake side of your cylinder head.

[bythabay]

Originally Posted by UR2EZ

PLEASE READ: mark the front of the plugs, the side with the gap, with a sharpie.

when you are tightening them, try to get the front side to face the intake side of your cylinder head.

Yeah, I am familiar with this strategy, however, in such low horsepower applications it's irrelevant, at least from what I've read. Still, it wouldn't hurt if someone went through the extra effort to mark and align.. I'd be concerned with over tightening/under tightening the plugs though; be careful.

[UR2EZ]

hey awesome, are you the guy who made those vids on infinithelp? they are awesome, but the one for MD plenum spacer isn't working and i'm about to install one.

is there another place i can view that same video?

[bythabay]

Originally Posted by UR2EZ

hey awesome, are you the guy who made those vids on infinithelp? they are awesome, but the one for MD plenum spacer isn't working and i'm about to install one.

is there another place i can view that same video?

You shouldn't have any problems watching it..hmm... Try refreshing the page and let me know if it continues not to function, I'll take care of it.