White power

[Silver_Fox]

Or lack of it

I've bought a CG125, and the spark plug looks exactly like this......white core, very white tip.

From what I deduce, that's running lean? Any suggestions on where to start?

https://i134.photobucket.com/albums/q98/pimpin88_photos/Saturn%20white%20spark%20plugs/P7150027.jpg
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CBR600 F3 FV
CG125

[MCN]

Air filter plugged.
Jet in carb plugged (normally with a crusty stuff) or a simple bit of shite.

Fuel flow from tank to carb blocked. Tap, Hose, in-line filter if fitted.

ps. I never knowed they made a four cylinder CG125.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[bamt]

[Silver_Fox]

Air filter looks brand new. Some mayonnaise collected in the bottom of the housing, I assume from the breather.

Is it easy to get to the carb to clean/check it? I've got some Seafoam I could run through her too

[MCN]

Some info here.

https://www.gsparkplug.com/

You could have a root aboot here too.
There's a similarity between CG125s and early British Bikes as in their basics.

https://bsac10c11c12.co.uk/smf/
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[Rogerborg]

[Silver_Fox]

It's an 8 but I've ordered a 9 as per this chaps recommendations...

https://hondacg125.awardspace.com/spark_plug.htm

"You need a NGK DPR8EA-9 spark plug for normal riding and a NGK DPR9EA-9 for extended high speed riding,
The extended high speed riding spark plug is stated in the Honda CG125 Front Disc brake models Owner's Manual"

"I found that 54mph in 5th gear is high speed for the plug and results in power dropping off if left at that speed for 1/2 mile.
The power drop off (plug overheating), results in the bike dropping to 50mph against a very strong head wind,
if you slow down a lot the plug will recover.

I fitted the DPR9EA-9 plug and end of problem = no power drop off and the bikes about 5 mph faster"

I definitely found this on the 1hr jaunt back from Oxford. The throttle was pinned open almost the entire way home. The M40 made a man out of me
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CBR600 F3 FV
CG125

[Rogerborg]

Yup, I fitted a 9 to my HN when I took it on a tour. Worth a try.
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Ste]

[MCN]

Should have ordered an Iridium plug for it.
It'll start better and last longer.
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Disclaimer: The comments above may be predicted text and not necessarily the opinion of MCN.

[Silver_Fox]

[MCN]

[Silver_Fox]

I mustn't have looked hard enough last night, at the time I bought the .9 for £4.31 on Amazon Prime, the cheapest I'd seen the iridium was £14. I've just found it for £7 on Ebay

It's for my partners birthday, and it's her first bike so I want it tip top before she sees it

Did you use the 8 or 9 iridium on your CG?
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CBR600 F3 FV
CG125

[Rogerborg]

I tried an iridium DR8EIX in my copy-engine. Eh. It might have made starting a little easier, but it was never a struggle. I can't say that it ran significantly better with it.

The best placebo effect I obtained was with a side-gapped plug, because effort = reward.

Ha! I get to nick this image back off of PakWheels.

https://www.pakwheels.com/forums/attachments/d-i-y-projects/513643d1186085220-diy-side-gapping-spark-plugs-extra-gain-img110_p58_pakwheels-com-.gif
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Silver_Fox]

Yeahhhhhhh. If you could just undo that "upgrade" that'd be greattttttt

https://www.artwithimpact.org/sites/default/files/lumberg.jpg
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CBR600 F3 FV
CG125

[MCN]

[Silver_Fox]

Why did you buy a .7?
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CBR600 F3 FV
CG125

[stinkwheel]

https://i134.photobucket.com/albums/q98/pimpin88_photos/Saturn%20white%20spark%20plugs/P7150027.jpg

Those plugs. What make are they anyway? Don't look like any of the common brands. Compression washers look shonky as hell.

It also sems to me that they still have the screw-on adapter on the top suggesting you have a non-standard plug cap fitted.

Tuning by sparkplug. I fitted BP7HS plugs to my Bullet instead of B7HS because more compression innit?*

* This may cause the piston to hit the sparkplug in some engines.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Silver_Fox]

That was the closest pic I could find on Googly. It's not my plug or plugs. No plug comparison chart had anything near as white so I scanned ze net
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CBR600 F3 FV
CG125

[MCN]

[talkToTheHat]

Irridiums are ace in engines that run a bit rich or are otherwise prone to fouling. Particularly good in big air cooled cylinders in engines that are hard to start in cold weather. More resistant to carbon fouling and fuel condensation fouling.

If you dont have those problems you wont notice any difference beyond extended lifespan. Beware of mechanics swapping out pristine irridium plugs for cheap ones becasue scheduled change innit
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Bandit. does. everything.

[Mark65]

My 07 CG had plugs that were almost grey/white, they were supposed to be that way as Honda made the CG very lean to pass the euro 3?, I think it was that one. Anyway I had no problems in the 15k or so I did.

Mark
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07 Yamaha YBR125, 07 Honda CG125 , 15 CBR300R (Chocolate Crank, Deaded), 16 CB500FA, 19 Honda Forza 300, 70 Suzuki SV650

[Silver_Fox]