Author Topic: 3VZ-E Changing Spark Plugs  (Read 17595 times)

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BigMike

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3VZ-E Changing Spark Plugs
« on: Jan 04, 2004, 10:28:03 PM »
I just did a tune-up on my friends 95' V6 4WD 4Runner.

Everything went well as planned except for cylinder #5's spark plug.

Cylinder #5 is located on the passenger's side bank at the rear of the engine. Removing the spark plug was done easily with an extension and swivel plug socket through all of the hoses and stuff above the cylinder. But installing the new spark plug was a different story.

I tried and tried for about 15-20 mins and got really mad. This truck had no body lift so going through the fender wheel well was not an option. I cut up my hand trying to install the plug and then finally found an easy way to do it:

Start by removing the EGR temperature (?) sensor that is mounted just next to the EGR. It is a 14mm. This will give your arm plenty of room to reach down into the side of the #5 cylinder.

Next, use a single spark plug socket (non-swivel type) with a 3" extension and set the spark plug into the socket.

I was easily able to position the socket using the extension near cylinder #5 and finally got it to thread in.

Now removing the spark plug socket from the spark plug was difficult as the 3" extension easily pulled away from the socket and I could not get a firm grip with my fingers onto the socket because it is deep behind the exhaust manifold. So I had to use a small pair of pliers to carefully grab the socket and pull it off of the spark plug (of course this was because spark plug sockets have a rubber insert to keep ahold of the plug). So I recommend that when you put the spark plug into the socket (step #2), don't put it all of the way in so that you can maybe remove it with just two fingers or so without having to use any pliers.

Now, when you put the EGR temp sensor back in, be careful!! to use some anti-seeze because it will easily bind up and ruin the threads, especially if it is cold!

So good luck.
I know this is a simple enough job, but #5 kicked my ass and I will do the job 20-mins faster next time because of this experience......so I wanted to share it with you. :beer: Also I wanted to help out in the Tech-Guide section since this section has not yet caught on  :_order:

Regards,
BigMike
« Last Edit: Jan 04, 2004, 10:33:48 PM by BigMike »
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Re:3VZ-E Changing Spark Plugs
« Reply #1 on: Jan 05, 2004, 01:09:25 PM »
hey big mike, next time try useing a str8 spark plug boot and put a bolt with the head cut off in it, now push on some fuel line to make it longer. and there you go! a spark plug tool that works and will come off ez!:thumbs:
A good day working, that's just sick :reg:

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Re:3VZ-E Changing Spark Plugs
« Reply #2 on: Jan 05, 2004, 08:52:47 PM »
WOW  :screwy: BIGMIKE.  I was there when Mike was doing the tune up :headscratch:. I reconmend removeing the EGR valve and leave the sensor in it.

Mr. MR2 in a 3VZE engine compartment :santa:
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95TacoTruck

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Re:3VZ-E Changing Spark Plugs
« Reply #3 on: Jan 07, 2004, 09:43:42 PM »
Would it be the same method for the 5VZE?  I haven't had to change the plugs yet cause they were just done before I bought it but for future reference.
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BigMike [OP]

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Re:3VZ-E Changing Spark Plugs
« Reply #4 on: Jan 07, 2004, 11:15:10 PM »
Actually the 5VZ uses the newer direct coil ignition system with 6 individual overhead coils per spark plug. So your engine uses heads that have the spark plugs in the center of the valves. So you've not only got a better angle to work with, but your spark plugs are eaisly accessable from the top of the valve covers rather than the side of the cylinder head :thumbs:

BigMike
« Last Edit: Jan 07, 2004, 11:16:45 PM by BigMike »
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Re: 3VZ-E Changing Spark Plugs
« Reply #5 on: Jun 12, 2004, 09:29:20 PM »
Hehehehe Mike I changed the plugs a while back....heheh that #5 kicked my arse too lol :smack:
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Re: 3VZ-E Changing Spark Plugs
« Reply #6 on: Jul 26, 2004, 11:27:29 AM »
Hehe, you don't know suffering until you've tried replacing the PCV valve on the 3VZ-E. Whoever decided on the placement for that needs to be tortured!

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Re: 3VZ-E Changing Spark Plugs
« Reply #7 on: Jan 02, 2005, 11:22:50 PM »
Guys I'm a Toyota mechanic and I DREAD doing tune ups on the 3.0's because of that friggin plug.  What I've found works best is a 36" extension and a wobbly spark plug socket.  It seems that every one of these that I work on the previous tech screwed up the threads on that plug and that makes it a royal pain in the ass to put the new plug in.  I usually end up running spark plug thread chaser thru there first and then put a little antisieze on the plug to get it to go back in smoothly.  The trick is to stick your arm way down in there and start the socket by hand- then stick the extension on it and thread it in from up top where its easy. I've tried removing the EGR stuff, and that usually just causes me more problems....

If you pull the upper intake plenum and lay it on the passenger side fender, they're WAY easier to change...  :gap:

No matter what, they suck to work on.

Ryan
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Re: 3VZ-E Changing Spark Plugs
« Reply #8 on: Jan 08, 2005, 09:31:20 PM »
I tried to check my plugs the other day on the 3.0.  What a PITA, I didn't have any swivels so I gave up pretty quick.  I looked at that #5 your talking about and didn't even attempt it.

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Re: 3VZ-E Changing Spark Plugs
« Reply #9 on: Aug 14, 2005, 12:55:53 AM »
I have found working off of a step ladder leaning in over the engine gives me a better angle on the #5, then trying to reach it from the side.  Though now that I have headers, I have to go at it the way you did.

I also find using a piece of air hose to install plugs makes it far easier to get them started, it also helps to avoid X-threading them.
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1kz

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Re: 3VZ-E Changing Spark Plugs
« Reply #10 on: Aug 22, 2005, 07:16:10 AM »
so, is the thought of having a 3vz as an option for an engine swap, will not be a good idea just for that NUMBER 5? :confused:

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Re: 3VZ-E Changing Spark Plugs
« Reply #11 on: Aug 22, 2005, 07:17:20 AM »
i hate my 3.0...doesnt have enough power for how much gas it uses for one thing and its just slooooooow
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NorCalToy

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Re: 3VZ-E Changing Spark Plugs
« Reply #12 on: Apr 12, 2008, 10:54:31 PM »
damn, i just had to do this and my dad put the passenger side plugs back in fwhile i worked on the driver side, i dont know what he did, but he had very little problems and was working with super cheap tools we found on the side of the road...and he has hige hands which doesnt work for toyotas...
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Re: 3VZ-E Changing Spark Plugs
« Reply #13 on: Apr 18, 2008, 09:24:57 PM »
Mine are easy, a few years back I took my body saw to the inner fenders. Makes changing them a snap !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :gap:
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Re: 3VZ-E Changing Spark Plugs
« Reply #14 on: May 01, 2008, 05:24:43 PM »
alright so after removing them and reinstalling them a few times, ive found that i only need 6" of extension and removing the long elbow part of the air intake i can access them all just fine.
:willynilly: '89 truck SAS sittin on 35's, Tacoma rear axle w/ E-Locker, welded front

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Re: 3VZ-E Changing Spark Plugs
« Reply #15 on: May 01, 2008, 05:34:21 PM »
Put a 22R in there, and the plugs will be really easy.........

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Re: 3VZ-E Changing Spark Plugs
« Reply #16 on: Jan 02, 2009, 09:49:31 AM »
I don't remove anything on my 3.0. At least on that side. I just put the plug in a plug socket and use a 3inch extension. On the drivers side I remove the air intake tube. And the #6 threads on mine are messed up. So I have to be really careful or I will remove threads.
Dr.Maxwe001 well i have a 15 gal compressor now and if I gett he 60  and then use the 15 as a reserve that wil give me 75 gal  thats close to 80 isnt it ?

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Re: 3VZ-E Changing Spark Plugs
« Reply #17 on: Jan 13, 2010, 12:07:15 PM »
6 inches of 3/8 fuel line works great for plugs that are a pita
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Re: 3VZ-E Changing Spark Plugs
« Reply #18 on: Jan 27, 2010, 06:36:06 PM »
put plugs in a 1mzfe. rear bank is tons of fun
do a couple of those and the 3vzfe is gravy
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Re: 3VZ-E Changing Spark Plugs
« Reply #19 on: Mar 17, 2010, 07:26:35 PM »
what are you guy's talking about there is nothing in the way of the #5 plug here i;ll show you  :thumbsup:
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