Spark plug question

rob mcnair · 11-29-2008, 06:56 PM

Hi all love the site! I've got an 03 taco 4cyl 4x4. The dealer told me I need to have the plugs changed every 30k miles but I've been reading here that the 4cyl. has 100k mile plugs and only the v6 needs to be changed every 30k. My question is is it the 2nd gen. 4cyl that have the 100k mile plugs or does my 03 4cyl have them also?

tacomaman06 · 11-29-2008, 08:08 PM

im honestly not too sure which plugs the 01-04 4cyl tacomas came with, but i do know the 2nd gen 4cyl tacomas have the iridiums from the factory. easiest thing to do will be to just go ahead and pull one plug and see what it is. then you'll know if you need to go ahead and change them or not......................and you can diy for way cheaper than what the stealer is going to charge you.

chris4x4 · 11-29-2008, 08:35 PM

You need to change your plugs at 30,000 miles. Only the Second gen 2.7 has the "100,000" mile plugs.
And Welcome to Tacoma World! :-)

humanoid · 11-29-2008, 08:43 PM

Yup, what Chris said! You need to change your plugs out every 30K with the dual pronged/electrode ones.

rob mcnair · 11-29-2008, 08:44 PM

Thanks for the help and the welcome.

chris4x4 · 11-29-2008, 08:45 PM

Quote:

Originally Posted by humanoid

Yup, what Chris said! You need to change your plugs out every 30K with the dual pronged/electrode ones.

I dont think the 2.7 uses a twin electrode, just the 3.4.

humanoid · 11-29-2008, 08:50 PM

Quote:

Originally Posted by chris4x4

I dont think the 2.7 uses a twin electrode, just the 3.4.

Damn, I sell my truck less than a month ago and my brain turns to swiss cheese all of a sudden.

chris4x4 · 11-29-2008, 08:53 PM

Quote:

Originally Posted by humanoid

Damn, I sell my truck less than a month ago and my brain turns to swiss cheese all of a sudden.

LOL, I forget things more than most. The only reason I remember is because, years ago, there was some debate on weather or not "clocking" the spark plugs gave any increase in performance. I spent a whole day takeing out the plugs, and makeing sure the electrode had the open end faceing the intake valves, and running the truck on the dyno. FWIW, there was no gain.

rob mcnair · 11-29-2008, 08:54 PM

Here's question number two, how in the freak do you get the ignition coils off. They look very delicate to me. I always changed my own plugs on my cars but these ignition coils are new to me.

chris4x4 · 11-29-2008, 08:57 PM

Quote:

Originally Posted by rob mcnair

Here's question number two, how in the freak do you get the ignition coils off. They look very delicate to me. I always changed my own plugs on my cars but these ignition coils are new to me.

They should have a nut on one side holding them on. If not, then just pull them off.

tacomaman06 · 11-29-2008, 10:12 PM

Quote:

Originally Posted by chris4x4

They should have a nut on one side holding them on. If not, then just pull them off.

well close.................i think its a 10mm bolt

................just take it out and then unplug the sensor and pull out on it.........it'll come on outta there.

chris4x4 · 11-30-2008, 05:49 AM

Quote:

Originally Posted by tacomaman06

well close.................i think its a 10mm bolt

................just take it out and then unplug the sensor and pull out on it.........it'll come on outta there.

LMAO!!! You know what I meant!

tacomaman06 · 11-30-2008, 08:37 AM

Quote:

Originally Posted by chris4x4

LMAO!!! You know what I meant!

.....yeah, just funnin with ya bro!!!!!

srsupertrap · 11-30-2008, 01:02 PM

I just finished replacing the spark plugs on my Tacoma 3.4 V-6, one cylinder bank had Denso's and the other NGK's. Someone was lazy.

Here is my related question, my Taco has 104K and is equipped with the original OEM spark plug wires, should I be concerned? The truck was running good before hand and although I have not priced them I am pretty sure those OEM wires cost a bunch because of their unique design. I have used NGK wires on a Pathfinder and have been quite happy with them.

So what's better 1) OEM or 2) NGK wires?

chris4x4 · 11-30-2008, 01:18 PM

Quote:

Originally Posted by srsupertrap

I just finished replacing the spark plugs on my Tacoma 3.4 V-6, one cylinder bank had Denso's and the other NGK's. Someone was lazy.

Here is my related question, my Taco has 104K and is equipped with the original OEM spark plug wires, should I be concerned? The truck was running good before hand and although I have not priced them I am pretty sure those OEM wires cost a bunch because of their unique design. I have used NGK wires on a Pathfinder and have been quite happy with them.

So what's better 1) OEM or 2) NGK wires?

The 2 different plugs come like that from the factory. There is a slight difference in resistance between the 2, so Toyota uses a cheaper plug to save a bit of money. (From what an engineer friend of mine told me). If it were me, stick with the OEM wires for best results. The only Toyota engine I have seen show a gain with different wires has been the carberated 22R.

humanoid · 11-30-2008, 01:33 PM

I think NGK will be fine with the Taco, but IIRC the pricing for NGK and the OEM ones weren't too different.

11-29-2008, 06:56 PM	#1
rob mcnair Junior Member Joined: Nov 2008, #11141 Location: vt Gender: Male Posts: 3 03 tacoma 4x4 ext.cab 2003 Xtra Cab Automatic 4cyl.	Spark plug question Hi all love the site! I've got an 03 taco 4cyl 4x4. The dealer told me I need to have the plugs changed every 30k miles but I've been reading here that the 4cyl. has 100k mile plugs and only the v6 needs to be changed every 30k. My question is is it the 2nd gen. 4cyl that have the 100k mile plugs or does my 03 4cyl have them also?

11-29-2008, 08:08 PM	#2
tacomaman06 Carolina Alliance: Redneck Division Joined: May 2007, #1475 Location: rock hill, sc Age: 29 Gender: Male Posts: 12,530 04 trd tacoma 4x4 v6 double cab 2004 Double Cab Automatic 3.4 v6 vent visors,deck plate mod, gray wire mod, black steelies and emblems, mag-lite mod, wheelers/ome suspension, stainless brake lines,blacked out bumpers(bedliner),dynomax super turbo muffler,cabelas mossy oak seat covers ans camo steering wheel cover....still to come.... afe pro dry s filter..........plus many,many more!!	im honestly not too sure which plugs the 01-04 4cyl tacomas came with, but i do know the 2nd gen 4cyl tacomas have the iridiums from the factory. easiest thing to do will be to just go ahead and pull one plug and see what it is. then you'll know if you need to go ahead and change them or not......................and you can diy for way cheaper than what the stealer is going to charge you. __________________ i am WILL--my ride=04 tacoma trd 4x4 double cab, v6, auto,deck plate mod, grey wire mod, billy 5100's all the way around,black low-pro uws toolbox, black steelies,blacked out emblems, mag light mod,wheelers/alcan springs, ome 881 coils, braided stainless brake lines, polyurethane bushings,dynomax super turbo/slash cut tip-blacked out,chrome deleted bumpers via herculiner bed liner,color matched bedlinered tailgate, camo seat covers,sockmonkey decals,husky floor liners and still to come....15 inch wheelers steelies and gy wrangler mtr's!!! http://s202.photobucket.com/albums/aa269/tacomaman06/ signature by piercedtiger www.myspace.com/goodolboy1979

11-29-2008, 08:35 PM	#3
chris4x4 Western Aliance: Fix it Division Joined: May 2008, #6497 Location: Tempe ,Az Posts: 5,846 2007 PreRunner 2007 Double Cab Automatic 1GR-FE (4.0 V6) OME 885's, OME shocks, Total Chaos UCA's, TSB springs with AAL, 5100 rear shocks, custom built fuel tank skid plate	You need to change your plugs at 30,000 miles. Only the Second gen 2.7 has the "100,000" mile plugs. And Welcome to Tacoma World! :-) __________________ The simplest solutions are often the most clever..............they are also usually wrong.

11-29-2008, 08:43 PM	#4
humanoid Mom says I'm special! Joined: Jun 2007, #1932 Location: Sunny SoCal Age: 40 Gender: Dude Posts: 1,349 I had a '99 Xtra Cab PreRunner SR5 V6 Automatic	Yup, what Chris said! You need to change your plugs out every 30K with the dual pronged/electrode ones. __________________

11-30-2008, 01:02 PM	#14
srsupertrap Junior Member Joined: Nov 2008, #10695 Location: Westminster, CO Age: 49 Gender: Male Posts: 9 2001 Tacoma SR5 V-6 TRD 4 X 4 2001 Xtra Cab Manual Fram Air Hog Filter so far . . .	Related Subject: Spark Plug Wires I just finished replacing the spark plugs on my Tacoma 3.4 V-6, one cylinder bank had Denso's and the other NGK's. Someone was lazy. Here is my related question, my Taco has 104K and is equipped with the original OEM spark plug wires, should I be concerned? The truck was running good before hand and although I have not priced them I am pretty sure those OEM wires cost a bunch because of their unique design. I have used NGK wires on a Pathfinder and have been quite happy with them. So what's better 1) OEM or 2) NGK wires? __________________ srsupertrap

11-29-2008, 08:44 PM	#5
rob mcnair Junior Member Joined: Nov 2008, #11141 Location: vt Gender: Male Posts: 3 03 tacoma 4x4 ext.cab 2003 Xtra Cab Automatic 4cyl.	Thanks for the help and the welcome.

11-29-2008, 08:54 PM	#9
rob mcnair Junior Member Joined: Nov 2008, #11141 Location: vt Gender: Male Posts: 3 03 tacoma 4x4 ext.cab 2003 Xtra Cab Automatic 4cyl.	Here's question number two, how in the freak do you get the ignition coils off. They look very delicate to me. I always changed my own plugs on my cars but these ignition coils are new to me.

11-30-2008, 01:33 PM	#16
humanoid Mom says I'm special! Joined: Jun 2007, #1932 Location: Sunny SoCal Age: 40 Gender: Dude Posts: 1,349 I had a '99 Xtra Cab PreRunner SR5 V6 Automatic	I think NGK will be fine with the Taco, but IIRC the pricing for NGK and the OEM ones weren't too different. __________________

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