Recent Topics
Removing a concrete sidewalk
by Oldtom
5 minutes 47 seconds ago
ATF exchange using the cooler line
by ugabulldog
40 minutes 14 seconds ago
High volume oil pumps?
by dlundblad
51 minutes 40 seconds ago
Penrite LV ATF
by toyota62
Today at 01:30 AM
Valvoline MaxLife Full Synthetic Multi-Vehicle ATF
by glmtd
Today at 12:17 AM
Kendall GT1 euro
by Bullwinkle007
Today at 12:05 AM
$14 5qt. QS 10w-40 syn blend + $5 GC - wallys
by lairdwd
Yesterday at 09:06 PM
Synthetic from dino?
by S2K
Yesterday at 08:35 PM
Voltage fluctuation 2012 Elantra
by schuylkill
Yesterday at 08:28 PM
Tranfer Case 2016 GMC Sierra 1500 6.2 8 speed
by dareo
Yesterday at 07:39 PM
Caliper slide pin questions
by ZZman
Yesterday at 07:24 PM
Perfect Afternoon with F7Fs
by Yah-Tah-Hey
Yesterday at 06:10 PM
Blending E85 to use as cleaner in non-FFV
by ltslimjim
Yesterday at 05:33 PM
01 Tahoe instrument cluster replacement question
by mjk
Yesterday at 05:25 PM
Reasonable price to pay some one to detail?
by Colt45ws
Yesterday at 05:09 PM
FCA upheaval--Marchionne ill, Jeep CEO takes over
by Carmudgeon
Yesterday at 04:42 PM
Duck Boat
by Zee09
Yesterday at 04:23 PM
What are these valves and can I use them to...
by E150GT
Yesterday at 04:06 PM
OBD Tool
by dawgn86
Yesterday at 03:31 PM
Any experience with the new FA-4 oils?
by SubaJew
Yesterday at 03:24 PM
Newest Members
ppreedom, krugger, jznwhite, S2K, tweak999
65524 Registered Users
Who's Online
61 registered (alarmguy, 4WD, ARB1977, 2009Edge, BobFout, 4 invisible), 1204 Guests and 38 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65524 Members
67 Forums
287444 Topics
4795295 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#4683507 - 03/03/18 06:52 PM Opinions on used spark plugs
FFeng7 Offline


Registered: 06/01/04
Posts: 373
Loc: Va
I finally changed the spark plugs in my Dodge. I have no idea of the mileage on these. At least 65-70K because that's how long I've owned the truck. Still ran great on the old sparkplugs and runs the same on the new ones. Replaced with NGK V Power. Also replaced the wires, cap and rotor. What's you guys opinion on the old ones??
_________________________
2002 Dakota Quad Cab 4x4-Delo XLE 10w30-Fram XG16 Filter
2007 Cobalt LT-Valvoline Maxlife 5w30-AC Delco Filter

Top
#4683510 - 03/03/18 06:54 PM Re: Opinions on used spark plugs [Re: FFeng7]
BrocLuno Offline


Registered: 09/06/15
Posts: 5625
Loc: Kalifornia Kollective
They look pretty goo on the cylinder side. The outside looks like poo...
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

Top
#4683521 - 03/03/18 07:01 PM Re: Opinions on used spark plugs [Re: FFeng7]
mk378 Offline


Registered: 09/27/15
Posts: 1449
Loc: USA
Those are worn out. Conventional plugs should have a sharp edge on the center electrode.

Top
#4683522 - 03/03/18 07:03 PM Re: Opinions on used spark plugs [Re: FFeng7]
Trav Offline


Registered: 11/20/06
Posts: 19346
Loc: MA, Mittelfranken.de
Valve cover gasket leaking on one side? The first one looks off a bit, check the wire to that plug and the terminal inside the cap.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

Top
#4683633 - 03/03/18 08:45 PM Re: Opinions on used spark plugs [Re: FFeng7]
oldhp Offline


Registered: 06/28/12
Posts: 1658
Loc: USA
Those are Autolite Platinums. That's why the center electrode is shaped the way it is. Cylinders look to be firing very clean.


Edited by oldhp (03/03/18 08:45 PM)
_________________________


Top
#4683645 - 03/03/18 08:59 PM Re: Opinions on used spark plugs [Re: FFeng7]
gathermewool Offline


Registered: 01/09/09
Posts: 6064
How far off from spec are they on gap?

Top
#4683685 - 03/03/18 10:02 PM Re: Opinions on used spark plugs [Re: FFeng7]
FFeng7 Offline


Registered: 06/01/04
Posts: 373
Loc: Va
The gap on these were not that bad. I didn't actually gap the old ones but compared to the correct gap on the new ones they looked reasonably close. I think the spec was supposed to be .040.
_________________________
2002 Dakota Quad Cab 4x4-Delo XLE 10w30-Fram XG16 Filter
2007 Cobalt LT-Valvoline Maxlife 5w30-AC Delco Filter

Top
#4683743 - 03/03/18 11:57 PM Re: Opinions on used spark plugs [Re: FFeng7]
SWS Offline


Registered: 04/10/04
Posts: 347
Loc: Tennessee
IMO, good preventative maintenance, and you were able to do it yourself - good for you!
You could not have known their condition otherwise.
What time s the total mileage on the vehicle?
Many years ago, I had 2 issues ( different cars, small-block Chevy, and VW Rabbit) in which the internal resistor messed up somehow. Plugs were not that old as I recall, but combustion side turned black from occasional missing. I could read greatly different resistance on the bad ones. Changed the plugs and restored perfect operation. Years later, changed those plugs and they were all perfect light brown.
Similar experience on common Briggs & Stratton lawnmower - changing last yearís perfect-looking plug with correct gap changes a non-start into first-time start. One variable!

Top
#4683796 - 03/04/18 06:14 AM Re: Opinions on used spark plugs [Re: FFeng7]
Popsy Offline


Registered: 05/10/15
Posts: 902
Loc: Frogland / Brittany
Inside part : Look pretty clean, gap seems fairly consistent cheers
Outside part : not so good smile I don't often see rusty plugs on the outside like that...well all my car have their plugs hidden under one million stuff, that could explain !

Well, if they had 65-70K, I still think you did good changing them (especially since you did it yourself), just to prevent some later removing issues, if the rust had gone worse.
_________________________
96 Barchetta, Motul 300V 5W40 | 98 Barchetta, Quartz 9000 energy 5W40
05 Forfour 95, SHU 0W40 (gf's car) | 10 Colt Ralliart, 300V 0W40

Top
#4683815 - 03/04/18 07:20 AM Re: Opinions on used spark plugs [Re: FFeng7]
BAJA_05 Offline


Registered: 02/04/18
Posts: 389
Loc: Berks County/Pa.
The two plugs that have some oil/residue on them -- where they the back two on either side closest to the cab of the truck? Asking that because, I changed the plugs on my neighbors truck -- 2000 Dodge Ram 5.2L -- and his back two plugs on opposite sides looked like yours. I replaced with OEM Champion Coppers.
_________________________
2017 VW Jetta SE TSI 1.4L Turbo (hers)
M1 Euro 0W40 & FU (19K)
2008 Acura TL 3.2L QSHM 5W20 & FU (103K)
2005 Subaru Baja AWD 2.5L N/A 5spd.
Rotella T6 5W30 & Wix (91K)

Top
#4683871 - 03/04/18 08:36 AM Re: Opinions on used spark plugs [Re: FFeng7]
Linctex Offline


Registered: 12/31/16
Posts: 6186
Loc: Waco, TX
In aviation, Sparks plugs are never changed until needed.

Those donít look bad at all.

I think a lot of plugs get tossed for no really good reason.
_________________________
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

Top
#4683875 - 03/04/18 08:39 AM Re: Opinions on used spark plugs [Re: BAJA_05]
Kira Offline


Registered: 08/19/10
Posts: 5450
Loc: Champlain/Hudson Valley
I assume in the photos they are 1-6 left to right and top to bottom.
So which ones had oil deposits?
Looks more like a penetrant was shot on before removal.

I agree with Popsy on the rust. Preventative maintenance is rarely a wasted effort.
I also agree with Linctex in that many a plug is replaced too soon.
My car's plugs were 10K overdue when I got it. Of course there was no change in operation. No sweat there.
It gave me a chance to look things over--just like looking around during an oil change. Get off on the view!

Also, someone could've installed cheap/incorrect ones. This goes for any vehicle.

A friend had an S-10. We changed plugs only a bit early. There was an improvement so that was good.

Top
#4683887 - 03/04/18 08:51 AM Re: Opinions on used spark plugs [Re: FFeng7]
ARCOgraphite Offline


Registered: 05/17/09
Posts: 12037
Loc: N.H, U.S.A.
One cyl looks to have higher than average deposits possibly a valve/seal guide worn passing oil into CC. Of the Plug in that one was way out of index. causing a higher misfire rate.

Nothing Horrendous.

That gap looks WAY bigger than 1.1MM more at 0.07"
_________________________
2014 Nissan Rogue S CVT, OC#9 41392mi-QSUD10W30 + M110A CHAMP Filter; 2017 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter

Top
#4683908 - 03/04/18 09:14 AM Re: Opinions on used spark plugs [Re: ARCOgraphite]
Trav Offline


Registered: 11/20/06
Posts: 19346
Loc: MA, Mittelfranken.de
Indexing usually isn't an issue and it looks to be running a bit richer than the others not oil fouled. Having cap and wires it could be from a terminal or cable causing a slightly higher misfire count (not high enough to set a CEL) or an injector causing a bit of trouble. Checking the wire Ohms and cleaning the terminal cost nothing.

These engines use a Deka injector that are known to have some issues at this age, not a lot but more than I usually see. The ones with issues I see usually have a very slight drip, like one drop every 5-10 seconds.
They are not repairable and should be replace once the issue is confirmed.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

Top
#4683912 - 03/04/18 09:21 AM Re: Opinions on used spark plugs [Re: FFeng7]
pbm Offline


Registered: 04/19/04
Posts: 7646
Loc: New York
My opinion is that the car is running well according to the look of the plugs....but I would have changed them and probably used the same model plug.
_________________________
'Journalism is Dead'

Top
Page 1 of 2 1 2 >