I've had my 4Runner about 55K miles and have not changed the plugs or wires yet. I know...stupid me...bad bad! I've noticed recently at idle it slightly rough so thought it might be time to get the plugs and wires changed out. I am stilling getting 19mpg town and about 22hwy.

How big of a project is it to change these items out?
Not sure what type of plugs are in it now.

Thanks,
Mike

 

I just did the same job on mine last week I used Bob's writeup on 4runner.org. Check out his site. He pretty much has every basic maintaince operation for our trucks photo documented and well explained. Here's his section on plugs:

http://www.4runners.org/writeups/sparkplugs/

I used the oem NKG plugs, and oem toyota wires from the dealer. It took about 60 minutes to do the plugs/wires. The oem wires were cake to route and install (unlike some aftermarket wires I've tried). While I had the intake assembly off, I also cleaned the MAF and TB. That took maybe 15 minutes.

 

Sweet! Thanks.
I didn't know about 4runner.org!
I'm gonna plan that for next weekend!

 

Use OEM is always a safe bet.

Log-on to www.1sttoyotaparts.com and input your year and model, under electrical, click "replacement parts" Go button, under electrical, ignition system, spark plugs.

 

I did it for the first time by myself last weekend. Took me about 1.5 hours start to finish by following the writeup in the maintenance section. I wish I had seen that 4runners.org link before hand, it looks simpler than the one I followed.

 

I also get OEM plugs from the dealership. Wires do not need to be changed out, IMO. (at your mileage, anyway). They work just fine for me after 113k miles.