Author Topic: better plug  (Read 1239 times)

PaulF

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Re: better plug
« Reply #15 on: August 24, 2016, 08:59:15 PM »
New iridium plug fitted and does feel better, really glad I did it.   Here is a picture of the old plug after 600 kms;


Tromper

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Re: better plug
« Reply #16 on: August 25, 2016, 01:18:28 AM »
What is the advantage of an iridium plug over standard Stig, especially if they are the same heat range.

Paul

The simple answer is that they last longer.  If you poke around a bit you'll find that's the one thing that folks agree on.
Of course that means the smoother idle etc. from a newer plug will last longer as well, but if you're the type who frequently replaces your plug anyway the main benefit will be to the manufacturer's bottom line.
There are some who'll say that it has a better spark, but actually it's very slightly the other way.  Of course there's another myth regarding the spark strength there since once a spark plug has sparked, unless it's extremely weak, the fuel/air has ignited so that's that.  With a fresh plug there is effectively no difference.

So...I run Iridium in my Burgman which is a true PITA to get at the plugs.  I run copper in my Kymco since it doesn't get the miles that the burger does so the longevity of the plug is somewhat moot since it's about an extra two minutes to check, & gap or replace the copper when checking the valves.

I ain't gonna put up links to back this since I did my digging long ago (there are even youtube hits to back this if ya dig a little), but also cuz plugs are like religion.  You're really not going to get many converts even with the extra efforts.  If you're really interested poke around and you'll find it.

Cheers, & flame on.

Tromper
k9 S200 (Blue) "Max" (Sold)
k8 SYM HD200 "Indigo"
k7 Suzuki Burgman 650 "Ohanzee"

Stig

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Re: better plug
« Reply #17 on: August 25, 2016, 03:48:05 AM »
You must be talking about the big Burgman?
I think it is pretty easy to change the plug on my 400 Burgman.....one of the few things easy on the scooter.
Stig
2012 KYMCO LIKE200iLX
2013 Burgman AN400
Scooter rider 4 yrs & 25,000 miles
Scooter Hx: Honda NSS300 Forza, from new.
Motorcycle Hx: 4 Hondas & 1 Norton, from new.

Stig

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Re: better plug
« Reply #18 on: August 25, 2016, 03:58:06 AM »
New iridium plug fitted and does feel better, really glad I did it.   Here is a picture of the old plug after 600 kms;


I agree Paul....and the plug I removed was a new NGK ...so the improved idle was due to the new NGK Iridium plug i replaced it with. Seems to make a nice difference on these small scooter engines and electrical systems.
Stig
2012 KYMCO LIKE200iLX
2013 Burgman AN400
Scooter rider 4 yrs & 25,000 miles
Scooter Hx: Honda NSS300 Forza, from new.
Motorcycle Hx: 4 Hondas & 1 Norton, from new.

PaulF

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Re: better plug
« Reply #19 on: August 25, 2016, 04:35:58 AM »
No worries Stig.  How does the replaced plug look to you, does it look like it was running rich, lean or looks ok. 

Paul

beermak

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Re: better plug
« Reply #20 on: August 25, 2016, 04:47:26 AM »
imo its ok but a little rich. thats why when cold with a slight gas it stalls. id give sole litlle more to the air screw... 1/8 to a 4th of turn and see if you get better results.


Enviado desde mi SM-G920I mediante Tapatalk


Stig

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Re: better plug
« Reply #21 on: August 25, 2016, 06:55:42 AM »
No worries Stig.  How does the replaced plug look to you, does it look like it was running rich, lean or looks ok. 

Paul
Got nothing re. carb tuning.
Haven't had one since 1975.
sorry.
Nice picture though. :)
Stig
2012 KYMCO LIKE200iLX
2013 Burgman AN400
Scooter rider 4 yrs & 25,000 miles
Scooter Hx: Honda NSS300 Forza, from new.
Motorcycle Hx: 4 Hondas & 1 Norton, from new.

PaulF

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Re: better plug
« Reply #22 on: August 25, 2016, 07:30:03 AM »
No worries Stig, thanks anyway.

tortoise

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Re: better plug
« Reply #23 on: August 25, 2016, 08:57:35 AM »
Somewhat related video about cap continuity . . U-shaped wire vibration wear in threaded-stud plug caps.



! No longer available


Replacement caps just screw into coil wire.



! No longer available
« Last Edit: August 25, 2016, 09:19:59 AM by tortoise »

Tromper

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Re: better plug
« Reply #24 on: August 25, 2016, 04:28:05 PM »
You must be talking about the big Burgman?
I think it is pretty easy to change the plug on my 400 Burgman.....one of the few things easy on the scooter.
Stig
Yup a 650.  One of the plugs isn't too bad but the other is a true PITA.
k9 S200 (Blue) "Max" (Sold)
k8 SYM HD200 "Indigo"
k7 Suzuki Burgman 650 "Ohanzee"

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