Recent Topics
I'm looking for a 0w30 A5 B5 oil
by Marco620 - 04/08/20 11:57 PM
Does anyone put heat shrink tubing over a connector plug?
by motor_oil_madman - 04/08/20 10:39 PM
Anyone ‘excited’ for API SP/GF-6?
by addyguy - 04/08/20 10:30 PM
O'Reilly online learning for .gov email addresses
by spackard - 04/08/20 10:26 PM
Welding Helmet Fogging Up
by George7941 - 04/08/20 09:54 PM
Detroit 4-53T 2009 Ford F350 Update.:)
by A310 - 04/08/20 09:48 PM
Thoughts on CAFE standards
by otis24 - 04/08/20 09:20 PM
PUP amazon 5w-20
by Koncrete_Cam - 04/08/20 08:54 PM
Duralube Trans Shudder Fixx question
by soulburner - 04/08/20 08:36 PM
Number of Spare Magazines You Consider Adequate?
by 2015_PSD - 04/08/20 08:24 PM
Troy Bilt TB6044XP string trimmer dies when hot
by 92saturnsl2 - 04/08/20 07:18 PM
JD Yanmar deisel engine
by yankees1 - 04/08/20 07:14 PM
PQIA Looks at Leading 0W-20's
by Jackson_Slugger - 04/08/20 07:03 PM
Marine oil in a passenger car engine
by Thunderbolt - 04/08/20 06:50 PM
BG SAE 5W-30 Full Synthetic Engine Oil
by JonnySaab - 04/08/20 06:42 PM
Buying oil filters: anyone buy them online?
by 53' Stude - 04/08/20 06:03 PM
Rampage muscle truck
by gfh77665 - 04/08/20 05:57 PM
Why is exhaust stupid expensive?
by IMSA_Racing_Fan - 04/08/20 05:34 PM
Castrol magnatec 5 qts of 0w20 for $14.15
by YoungEngineer - 04/08/20 05:20 PM
New WEN 56225i First Oil Change 1 Hour
by gathermewool - 04/08/20 05:04 PM
Newest Members
Hitmang77, mpstir, LMVLS1, Jotorobi, jhoffy22
71128 Registered Users
Who's Online Now
24 registered members (Chunchula, ctechbob, 4WD, Dave_Mark, clinebarger, 5 invisible), 975 guests, and 19 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics303,806
Posts5,242,179
Members71,128
Most Online4,538
Jan 20th, 2020
Donate to BITOG
Print Thread
Hop To
Page 1 of 3 1 2 3
Fun spark plug discussion #5334991 01/28/20 10:12 PM
Joined: Aug 2017
Posts: 1,274
1
14Accent Offline OP
OP Offline
1
Joined: Aug 2017
Posts: 1,274
The current thread on spark plug metallurgy and the difference in lifespan of the plug got me thinking: what is the biggest pain in the rear spark plug change you've experienced? The discussion in that thread had many comments referring to using long-life plugs to avoid having to do the job again, which is a massive selling point given the lack of access on many newer vehicles. It got me thinking, though, what other vehicles are a pain to do plugs on? Certainly they haven't all been invented recently... I've heard stories of the trouble people had changing plugs on the big-blocks that were stuffed into intermediate cars back in the late 60's - early 70's.

I wasn't around at that time, but here's a short list of what I've come across as being "difficult" spark plug changes:

Any F-series with a mod motor. 4.6 SOHC probably the easiest, 5.4 3V easily the worst
Any S-series truck/SUV with the 4.3
Any "cab over" van (a la Astro, Express/Savanna, E-series)
Any Toyota or Nissan V6 (especially the 3.5 Toyota and VQ engines in FWD, minivans are the worst)
Any DOHC Subaru (the SOHC is cake)
Trailblazers with the 5.3/6.0
The Opel-designed V6 in Saturns and early CTS'

I'm sure there's more I'm forgetting, but that tends to happen when you work on so many different vehicles. So what say the collective? Which spark plug replacement really stuck it to you?


2013 Chevrolet Volt - Saves enough in fuel to pay for itself!

2007 Chevrolet Impala LT
Re: Fun spark plug discussion [Re: 14Accent] #5334994 01/28/20 10:19 PM
Joined: Mar 2008
Posts: 9,477
S
slacktide_bitog Offline
Offline
S
Joined: Mar 2008
Posts: 9,477
The original VQ30 in the 95-99 Maxima is no problem at all because Nissan was smart enough to put cutouts in the intake to allow for easy replacement smile
Unfortunately, for the next generation starting in 2000, they stopped doing that, making the rear plugs impossible

It's impossible to change the spark plugs on a 4th gen Camaro/Firebird because they tuck the engine under the windshield.

Most FWD GM cars with any pushrod V6 require the use of a crowbar to tilt the engine forward to access the rear bank

And yeah, the minivans are the worst. That's why I suggest the 4-cylinder Sienna to people looking for a minivan

Re: Fun spark plug discussion [Re: 14Accent] #5334999 01/28/20 10:24 PM
Joined: Dec 2017
Posts: 6,209
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 6,209
Back three plugs of the Ford 3.0 Vulcan are a pain but better if you pull the passenger side cowling and the air intake on the driver’s side. No real need to take off the upper intake manifold but some do.

Chev 6.0 LS V-8 in pickups used the same head design on both sides, so the plugs are tilted to the front on the driver’s side, (good) and to the back on the passenger side (bad). I take off the passenger side wheel and go in from underneath the fender. Others use the “ Flying Superman” stance and come in from above. laugh

Last edited by Snagglefoot; 01/28/20 10:27 PM.

If you want the job done right......do it yourself.
Re: Fun spark plug discussion [Re: 14Accent] #5335001 01/28/20 10:26 PM
Joined: Jun 2003
Posts: 20,543
C
Chris142 Offline
Offline
C
Joined: Jun 2003
Posts: 20,543
30 years ago I replaced the plugs and wires on a ford Aerostar van. Took me a full 8 hr day!


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: Fun spark plug discussion [Re: slacktide_bitog] #5335004 01/28/20 10:29 PM
Joined: Aug 2017
Posts: 1,274
1
14Accent Offline OP
OP Offline
1
Joined: Aug 2017
Posts: 1,274
Originally Posted by slacktide_bitog
The original VQ30 in the 95-99 Maxima is no problem at all because Nissan was smart enough to put cutouts in the intake to allow for easy replacement smile
Unfortunately, for the next generation starting in 2000, they stopped doing that, making the rear plugs impossible

It's impossible to change the spark plugs on a 4th gen Camaro/Firebird because they tuck the engine under the windshield.

Most FWD GM cars with any pushrod V6 require the use of a crowbar to tilt the engine forward to access the rear bank

And yeah, the minivans are the worst. That's why I suggest the 4-cylinder Sienna to people looking for a minivan


I forgot about F-bodies. Pretty much any engine in those is a pain, from the V6 to the LS.

Definitely most minivans, although I find the later model Caravan's with the 3.8 to not be terrible. They moved the cowl back on those. The early ones were certainly tougher.


2013 Chevrolet Volt - Saves enough in fuel to pay for itself!

2007 Chevrolet Impala LT
Re: Fun spark plug discussion [Re: 14Accent] #5335005 01/28/20 10:29 PM
Joined: Jun 2003
Posts: 106
S
samven Offline
Offline
S
Joined: Jun 2003
Posts: 106
The Ram pickup with 5.7 hemi's are allot of fun. 16 plugs and you have to do 8 of them on a step ladder, by feel and the plug wrench is too long to get over the back plugs.

Re: Fun spark plug discussion [Re: Chris142] #5335008 01/28/20 10:30 PM
Joined: Aug 2017
Posts: 1,274
1
14Accent Offline OP
OP Offline
1
Joined: Aug 2017
Posts: 1,274
Originally Posted by Chris142
30 years ago I replaced the plugs and wires on a ford Aerostar van. Took me a full 8 hr day!


The Aerostar! I forgot to lump that one in with the cab-over vans, but that's a contender no doubt about it.


2013 Chevrolet Volt - Saves enough in fuel to pay for itself!

2007 Chevrolet Impala LT
Re: Fun spark plug discussion [Re: 14Accent] #5335011 01/28/20 10:34 PM
Joined: Dec 2017
Posts: 6,209
S
Snagglefoot Offline
Offline
S
Joined: Dec 2017
Posts: 6,209
Did someone grunt “Ruthenium”? laugh

Keep it going!

Last edited by Snagglefoot; 01/28/20 10:48 PM.

If you want the job done right......do it yourself.
Re: Fun spark plug discussion [Re: 14Accent] #5335041 01/28/20 11:28 PM
Joined: Mar 2011
Posts: 399
pkunk Offline
Offline
Joined: Mar 2011
Posts: 399
Care to be taken with the early Ford V10 with the 3 thread aluminum heads. Took me forever to replace the 12 plugs in my 2000 ML320


8200 ft elevation in the Sangre de Cristos
2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Fun spark plug discussion [Re: 14Accent] #5335050 01/28/20 11:45 PM
Joined: Dec 2018
Posts: 103
A
A_User55555 Offline
Offline
A
Joined: Dec 2018
Posts: 103
I changed all the spark plugs on my DTS when the car reached 100K miles in September. It was a pain getting to the back spark plugs and removing a bunch of stuff to access them.


However, the car ran MUCH better with the new plugs so the effort was worth it.


2011 Cadillac DTS. No the headgaskets have not blown.....
5W-30 Valvoline Full Synthetic with a Purloator Boss PBL25288 Filter
Re: Fun spark plug discussion [Re: 14Accent] #5335055 01/29/20 12:03 AM
Joined: Jan 2004
Posts: 6,545
N
nthach Offline
Offline
N
Joined: Jan 2004
Posts: 6,545
Ford Explorers with the 4.0L Cologne V6 want you to donate a little skin and blood. I've heard the F-Body Camaros are fun too...

Re: Fun spark plug discussion [Re: A_User55555] #5335066 01/29/20 12:26 AM
Joined: Aug 2017
Posts: 1,274
1
14Accent Offline OP
OP Offline
1
Joined: Aug 2017
Posts: 1,274
Originally Posted by A_User55555
I changed all the spark plugs on my DTS when the car reached 100K miles in September. It was a pain getting to the back spark plugs and removing a bunch of stuff to access them.


However, the car ran MUCH better with the new plugs so the effort was worth it.


I feel your pain. The N* became much more difficult when it switched from coils and wires to the ignition cassettes. Does your have secondary air injection, aka California emissions? That makes the rear bank even more of a treat...


2013 Chevrolet Volt - Saves enough in fuel to pay for itself!

2007 Chevrolet Impala LT
Re: Fun spark plug discussion [Re: 14Accent] #5335135 01/29/20 06:37 AM
Joined: Oct 2012
Posts: 532
E
Egg_Head Offline
Offline
E
Joined: Oct 2012
Posts: 532
"Sunbeam Tigers with the Ford 260/289 were difficult, but they provided a little access door behind the glove box so you could go through the firewall and reach the back two plugs on the right side" So I'm told....


1979 Garelli Rally Sport
2009 Cub Cadet LT1042
2002 BMW 540 M Sport (totaled)
2011 MB E350 4Matic wagon
1979 CJ-7
1978 K-5 Blazer 400ci
Re: Fun spark plug discussion [Re: 14Accent] #5335185 01/29/20 08:22 AM
Joined: Aug 2013
Posts: 804
T
tcp71 Offline
Offline
T
Joined: Aug 2013
Posts: 804
F series 4.6 and 5.4s aren’t really a problem. Access is fine, but the two piece plugs from 2004 to late 2007had a tendency to carbon up on the extended electrode making them break on removal. This was fixed with new heads in late 2007 that have completely normal plugs. I could change them on my 2009 5.4 F150 in about 40 minutes without issue. Before 2004 the threads were a bit short and care needed to be taken not to over tighten.

Much bigger issue is our 2005 Toyota 3.3l. The intake manifold, wiper tray and a bunch of plumbing needs to be removed to get to the rear bank.


2016 F150 Eco: Edge 0w40
2005 Sienna 3.3: PP 5w30 syn. (varies)
Re: Fun spark plug discussion [Re: 14Accent] #5335197 01/29/20 08:36 AM
Joined: Jan 2015
Posts: 1,646
R
ragtoplvr Offline
Offline
R
Joined: Jan 2015
Posts: 1,646
The Ford freestar you take off the wipers and remove the module under the window. Takes 20 minutes the second time. then all wide open.

Rod

Page 1 of 3 1 2 3
Previous Thread
Index
Next Thread

BOB IS THE OIL GUY® Powered by UBB.threads™