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Spark plugs for the motorcycle? #4507527
09/04/17 06:30 PM
09/04/17 06:30 PM
Joined: Dec 2016
Posts: 2,258
MURICA
maverickfhs Offline OP
maverickfhs  Offline OP
Joined: Dec 2016
Posts: 2,258
MURICA
I am planning to replace the spark plugs on my motorcycle, because they seem to be gone:





Do they tell anything about health of the engine? Also, should I go Iridium or double iridium?

It's for regular street riding. Thanks for the advice and suggestions thumbsup


2006 Civic EX 205K/AT
2006 Acura TSX 187K/AT
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507532
09/04/17 06:36 PM
09/04/17 06:36 PM
Joined: Jan 2007
Posts: 2,586
Central NY
rsylvstr Offline
rsylvstr  Offline
Joined: Jan 2007
Posts: 2,586
Central NY
Standard NGK is my preference


2013 F150 SCrew Lariat 4X4 5.0 3.55
2012 Altima SL that still vibrates.
2018 Polaris Sportsman 850 SP. Polaris fluids and filter.
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507548
09/04/17 06:47 PM
09/04/17 06:47 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
Get a new set of plugs with the correct gap and then see what the plugs look like after a few days riding to see if you may need a different heat range and if the engine has any issues. The present one looks a little on the cold side but if not ridden a lot lately hard to judge.



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507553
09/04/17 06:56 PM
09/04/17 06:56 PM
Joined: Jul 2009
Posts: 820
texas
danez_yoda Offline
danez_yoda  Offline
Joined: Jul 2009
Posts: 820
texas

Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507556
09/04/17 07:00 PM
09/04/17 07:00 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
Nice link danez



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507588
09/04/17 07:17 PM
09/04/17 07:17 PM
Joined: Aug 2009
Posts: 3,921
Pittsburgh,PA U.S.A.
JimPghPA Offline
JimPghPA  Offline
Joined: Aug 2009
Posts: 3,921
Pittsburgh,PA U.S.A.
Those plugs look fouled. Iridium plugs tend to resist fouling. If it were mine I would change to one grade hotter and go with iridium or double iridium.

I had a 175 2 cycle that we use to run mixed gas. It would foul the plug in only a couple of days of riding. After a couple of years of replacing plugs I put an iridium plug in it and it never fouled that plug. That plug was still in it when I sold it years later.


Boy will I be happy when ALL vehicles on public roads are autonomous.


JimPghPa

Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507591
09/04/17 07:24 PM
09/04/17 07:24 PM
Joined: Apr 2015
Posts: 424
Reunion Island
Superflan Offline
Superflan  Offline
Joined: Apr 2015
Posts: 424
Reunion Island
I go with either OEM fit (NGK or Denso), or switch to Denso Iridium Power on all my bikes, feeling the performance difference on the small engines ones.


Peugeot Partner 1.9 D, 5W40 C3, 245000 Km, running on WVO
Wife's Mitsubishi Outlander PHEV, dealerís overfilled, 16000 Km
Re: Spark plugs for the motorcycle? [Re: bioburner] #4507597
09/04/17 07:32 PM
09/04/17 07:32 PM
Joined: Dec 2016
Posts: 2,258
MURICA
maverickfhs Offline OP
maverickfhs  Offline OP
Joined: Dec 2016
Posts: 2,258
MURICA
Originally Posted By: bioburner
Get a new set of plugs with the correct gap and then see what the plugs look like after a few days riding to see if you may need a different heat range and if the engine has any issues. The present one looks a little on the cold side but if not ridden a lot lately hard to judge.


Yes, bike has been sitting for a bit and I would say last time it was rode probably, a few months ago!


2006 Civic EX 205K/AT
2006 Acura TSX 187K/AT
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507598
09/04/17 07:33 PM
09/04/17 07:33 PM
Joined: Dec 2016
Posts: 2,258
MURICA
maverickfhs Offline OP
maverickfhs  Offline OP
Joined: Dec 2016
Posts: 2,258
MURICA
I am definitely leaning towards Iridium ones, double Iridium maybe too expensive!

Does anyone has an AAP code?


2006 Civic EX 205K/AT
2006 Acura TSX 187K/AT
Re: Spark plugs for the motorcycle? [Re: rsylvstr] #4507622
09/04/17 07:58 PM
09/04/17 07:58 PM
Joined: Feb 2008
Posts: 4,727
Texas
FZ1 Offline
FZ1  Offline
Joined: Feb 2008
Posts: 4,727
Texas
Originally Posted By: rsylvstr
Standard NGK is my preference
This ^^^^

Re: Spark plugs for the motorcycle? [Re: FZ1] #4507623
09/04/17 07:59 PM
09/04/17 07:59 PM
Joined: Dec 2016
Posts: 2,258
MURICA
maverickfhs Offline OP
maverickfhs  Offline OP
Joined: Dec 2016
Posts: 2,258
MURICA
Originally Posted By: FZ1
Originally Posted By: rsylvstr
Standard NGK is my preference
This ^^^^



You don't even prefer Iridium ones? Because FZ1's love to be ridden and can do many many miles! smile


2006 Civic EX 205K/AT
2006 Acura TSX 187K/AT
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507676
09/04/17 09:00 PM
09/04/17 09:00 PM
Joined: Jul 2009
Posts: 183
New Mexico USA
CCI Offline
CCI  Offline
Joined: Jul 2009
Posts: 183
New Mexico USA
You're right, those plugs are done. If you are riding fairly gently, no long stretches at high speeds, no extreme temperatures, no heavy loads, then the color on those plugs doesn't look that bad at all. It's important to remember that as they wear (and those are worn), then the quality of the spark and the quality of the ignition sequence as it relates to the function of the plug changes a little bit, too.

Yes, plug condition tells much about engine health, I'd say yours is pretty good, although I might change plugs a little more often. It's helpful to know how you're riding, if this is gentle riding around town, the ignition timing, fuel/air mixture, and engine condition appear to be normal. If this was removed immediately after a few miles at highway speeds, I'd say change your air filter, too, and check it again.

Go with any plug that interests you and check it after a few hundred miles, see how it looks.

Most importantly, pay attention to how you gap the plug. It's best to use the special tool for setting the gap, it bends the ground electrode without touching the center electrode. Don't attempt to set the gap by inserting anything between the center electrode and the ground electrode and prying, you can do a lot of damage to the plug and possibly your engine.

Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507722
09/04/17 10:10 PM
09/04/17 10:10 PM
Joined: Mar 2017
Posts: 140
northwest pa
justintendo Offline
justintendo  Offline
Joined: Mar 2017
Posts: 140
northwest pa
ngk or denso are my choices always...exotic metals are mainly for longer life to resist erosion.


2013 escape 2.0 awd mobil 1 10w30ep
2008 fusion 2.3 mtx redline 0w20
1996 f150 4.9 2wd mtx mobil 1 10w30hm
1999 kaw zrx 1100 redline 10w40
many husqvarnas
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507735
09/04/17 11:27 PM
09/04/17 11:27 PM
Joined: Dec 2005
Posts: 3,358
The Canyons
02SE Offline
02SE  Offline
Joined: Dec 2005
Posts: 3,358
The Canyons
If it were me, I'd install NGK CR9EIX.

I'm running the same plugs in my heavily modified bike. They fire reliably, even at the very high cylinder pressures in my application.

Last edited by 02SE; 09/04/17 11:31 PM.
Re: Spark plugs for the motorcycle? [Re: maverickfhs] #4507774
09/05/17 04:31 AM
09/05/17 04:31 AM
Joined: Nov 2006
Posts: 20,777
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,777
MA, Mittelfranken.de
If the bike has 2 coils with 2 wires on each coil double platinum or iridiums are a must, its a waste spark ignition.


ASE L1, Master. Deutsch Meisterbrief.
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