Idel RPM for Honda CG 125 in Winters?

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eyeofthetiger (eyeofthetiger) 2012-11-12 09:54:41 +0500 #1

Hi guys, i want to know if Idel RPM should be different in Winter and Summer, like in Summer my bike was very good at Idel RPM of 1500, but now my bike suddenly stops on signals, i have increased it to around 1800, now it seems to be ideling properly.

Does it has any link to low temperatures, making the bike engine cold and causing the bike to stop.

Please share your experience and guide me on this. Thanks.

RX115 (RX115) 2012-11-12 10:02:21 +0500 #2

ideal idle rpm of cg is 1100

abobobilly (abobobilly) 2012-11-12 10:30:07 +0500 #3

@eyeofthetiger! Bike's idling depends on the mixture settings. If its Rich, then the bike can idle at 1000 RPM just fine.

However if its Lean, then the idling speed should be set upto 1500. If its not idling at 1500 then i think the bike needs tunning or a mixture setting probably. Weather and temperature affect the idling speed upto the point when the engine is cold. When its fired up/warm enough it doesn't affect it.

asjdsm (asjdsm) 2012-11-12 13:13:40 +0500 #4

it sounds a leak somewhere b/w the air filter and carb or carb to cylinder head/engnie connection .. check there is good seals b/w the mating surfaces of carb and the engine..

eyeofthetiger (eyeofthetiger) 2012-11-12 13:39:05 +0500 #5

Thanks @abobobilly, i will check with honda service person.

eyeofthetiger (eyeofthetiger) 2012-11-12 13:57:42 +0500 #6

After how many Kilomteres tunning should be done for Honda CG 125

ha125 (ha125) 2012-11-12 14:02:29 +0500 #7

Don't remember at the moment but it is mentioned on manual

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Automotorsport_Lover (Automotorsport_Lover) 2012-11-12 14:39:04 +0500 #8

Tuning interval should be approx. 1500kms not more than that.
Also, 1800 rpm is too much!
Ur ride needs tunning, or close inspection like adjsm said

abobobilly (abobobilly) 2012-11-12 16:00:32 +0500 #9

For best engine life, 800KMs MAX.

However this depends on various conditions.

If you ride your bike Hard (excessive speed in a gear, quick acceleration etc), and especially if you drive inside the city where you have to brake again & again at traffic signals, then 800KM is the optimum point.

If you ride your bike with ease, taking care of Gear Shifting and Speed, and usually ride at longer routes (say, Canal Road) ... then you can do upto 1200KMs easily.

"Normally" i do the tunings at 1000KM. No more, no less.

Another thing, dont go to Mechanics excessively for tunings. Learn to do it yourself. Sure you can go to mechanic after every 5k KM or so.

All it includes:
- Air filter clean up
- Engine oil change
- Tappet adjustment i.e. Valve clearance (after every 5 or 6k kilometers.)
- Spark Plug maintenance i.e. cleaning

... Visit a mechanic and observe him do it. You'll be able to do it yourself after that easily.

Automotorsport_Lover (Automotorsport_Lover) 2012-11-13 03:43:15 +0500 #10

^^ Tappet adjustment should be done no later than 1500 ~ 2000Kms
Our obsolete technology bikes tend to need much more maintenance than what people get in 2nd or 1st world countries.

And Yes...
1000Kms is ideal timing for most bikes.
With OHV engines of CG125 and others, mechanics recommend oil change and tuning at 800Kms.
Proper engine warm up before you take a ride in all seasons is also highly recommended in CG, these both things would highly improve the engines life span.

Well built OHCs can take some more easy going maintenance schedule better.

meghafranc (meghafranc) 2012-11-13 04:07:26 +0500 #11

Tuning interval should be approx.

abobobilly (abobobilly) 2012-11-13 04:17:54 +0500 #12

I had the same thinking. But i have experienced it myself plenty of times that after 1500 or 2k KMs, BARELY any adjustment is needed.

Asking a couple of mechanics proved that you dont really need to adjust valve clearance that often. One can take it easy upto 6000 KMs.

That said, whenever tappet adjustment is needed, the bike will tell itself. Power Loss for instance.

Now, tuneups is ONLY required when its NEEDED. It doesn't mean if the bike is running fine, you HAVE to do the tune ups. Oh no. Instead, wait for the bike to tell you (to give indications) when she wants a tune up. For example, whenever there is time to oil change:
- Bike engine will start to scream more than usual.
- Unusual Engine noises will be obvious
- Clutch will lose its functionality a little bit, whenever the bike's engine will get even slightly hot.

My point is, Unnecessary expenditures should not be made a habit.

But if you have so much money to spare, then ofcourse, who am i to go against that

Automotorsport_Lover (Automotorsport_Lover) 2012-11-13 04:48:29 +0500 #13

^^ Agreed,

Your are correct but it depends whats ur target audience?
If ur telling people who dont know anything about bikes and engines to not to tune adjust tappets upto 5000Kms... they are doomed!

Yes u can save money SAFELY up to 1500~2000Kms as i said earlier.
But above that would be a risk....
Just recall, how many time you had tuning and ur bike was still sucking big time or even got worse response than before?

Thus What i mean to say is, if ur mechanic made a mistake with valve clearing adjustment and you drove like that for 5000KMs with all kinda beating and rough usage! Ur ride has certainly got considerable, preventable damage!! Thus making a habit of getting things checked before it snaps off is much better than saving 150 bucks of tuning ur bike.

Thus as a Standard statement - good 4 all people, I'd say 1,000Kms is ideal, 1500~2000Kms is MUCH MUCH Recommended, Above that if something snaps!!! Ur urself responsible...

And again, Hondas do take beating easily.. but with Chondas and Suzukis and Yamahas - DOnt expect that much!

My yamaha Junoon has engine from Yamaha Crypton T105... Its a bike which is currently being sold in 2nd world countries...
The manufacturer (Yamaha) rely on educated, well equipped dealer services and mechanics while designing that engine...
U'd be shokha with this engine.. and its not designed to take anything easy!!

But when we talk about the 80's technology 125 and cd70..yes they can take this easy going, chill mahol mentality bcoz these where designed in the era when mechanics were not that educated everywhere.

Also note how many UGLY UGLY looking Sprinters, GS, Junoon and various kinda Chondas u have seen on the road... their shaggy condition is a result of ignorant mechanics and owners.
Hondas on the other hand is luckier that most mechanics know them relatively well.

The problem is... that ur avg. mechanic down the street knows far less about this technical **** as you do... So... would u trust him with ur bike? Would u bet all ur money and live on the edge?

I'd rather like to keep loosing 150/200Rs more often and stay on the safer side.
I have tried many mechaics with my junoon.. and guess what? none of them take work seriously! And you can only judge their work if u really have some reading and research on bike - something which newbies dont have at all!

eyeofthetiger (eyeofthetiger) 2012-11-16 14:41:07 +0500 #14

Thanks everyone for sharing your thoughts, i am cleaning air filter and changing oil every 1000 kms. Its 5000Kms since full tunning was done, the service person said no need for full tunning at the moment. I have re-adjusted the RPM back to 1500, now its running fine, maybe some garbage in fuel or something.

I will goto the Honda Service station and ask about full tunning again.