Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

In 5th service coupon, at the backside there is a list of things which they need to do. It was written there engine oil replacement.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

After so many failed attempts to tune the carb and find the correct tuning, now I think that this time I have got the correct tuning. I followed what sibun sir and pinaki sir said. I got the carb and jets cleaned. And after that I decided to use the trial and error method of tuning the carb like jeswin sir did. Now after 100 kms of continuing the same tune here are the plug pics. But still I am not sure how is the mix. I want to ask the experts. Please tell whether this is optimal tune or not.

Plug: Bosch U4A
Bike: Hero Passion Pro





Thanks.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion



ThankU Sibun

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

You should use another plug. This is a non-resistor colder plug. The color will never be the 'brown/chocolate'. The pic appear to be blur. The mixture looks optimal. But what another thing i can see is the black soot is shining, most probably there is unburnt fuel left. And that unburn fuel has reached all over through the thread till washer.

The thread should atleast appear clean and dry. Would suggest you to clean your plug thoroughly thread and washer, and then check for the result. Plug should appear dry. If it doesn't, you still need retuning. Rub your finger and you will see the wetness.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Sir please see my old posts. I was not able to get UR4AC so I got U4A. I am not able to get a resistor plug here. The shopkeepers dont know anything about these.

The black soot and oil in threads is I think due to previous tuning. I was running very rich. I will clean the plug. Yes the pic is blurred. I will take another pic at night with flash and post it.

Thanks

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

No need of another pic. Get OE plug not aftermarket. OE comes with resistor.
Trial & error method is more difficult than normal tuning. Most people do get the higher rpm while tuning however get stuck and confuse where, at what point, to leave that air screw. Thats because at that higher rpm point about 1/8 range will be like same rpm, no increase or decrease. And that's why most people find it difficult to tune and the results doesn't get what they actually need.

Now the question is how to get perfect tune. There are few key points that YOU must UNDERSTAND and FOLLOW.

The place of tuning: You must tune in a quite place where there is absolutely very less background noises and all you can here is only your bike rpm with deep concentration. And there should be no one to distract your concentration in listening to rpm.

Patience: This is vitally important to have patience while you tune. It takes almost 10-15 minutes of concentration while tuning and most people want the result in 2-3 minutes which is NOT possible therefore they give up saying 'I can't do this'. And that's the reason why they fail while they tune because they might be thinking 'someone is watching them and laughing what this guy is doing'. Because of this another thought in mind they can't focus on what they are doing, and they end up with thought 'I can't do this!' -personal experience.

You have to give up that all. While you tune sit comfortable and feel comfortable. Makesure there is no such thing in your bike which would rattle with the vibration because that sound will mixup with sound which you want to hear. Keep aside your tools.

Now, hold the leg guard and keep you eyes stick in the utility box (thats what i do) and see its frequency of vibration.

At that 1/8 gap you will find one point where the vibration will be in an uneven pattern. We need the equal pattern of the vibration, where the up and down frequency will be exactly same. We need the same pattern of frequency, the vibration.

You need to use your 3 sanctuary factors out of 5. Those are: touch, see and hear.
Now touch the leg guard and feel the vibration. Don't focus on that part much. What most important is what you hear and see.
Hear the sound very very closely. You must able to create an image, a picture in the screen of your mind of the flow, the pattern of the vibration and it should be same, not uneven.
See closely your utility box vibrating and you will notice the difference.
Dont make a change in air screw too frequently. Hold on to that for 30-60 secs before you make a change or you are sure about that this is not the correct point.
Move back & forth the air screw very very lightly and notice the changes.
REMEMBER changes in rpm doesn't reflect instantly, you must give a time before you can notice the change and moving ahead altering the air screw.
When you look at the utility box closely you will find the vibrating pattern. Hold on to that area and keep altering the air screw before you can see the equal pattern in the vibration.

Read this twice, thrice and understand what i am trying to say. What i have wrote now is i have gained thru my own experience with multiple attempts (may be 15-20 attempts or more) of trying to get the best results. You can't get it at 1 or 2 attempts, that's what most people want and fail. You must give yourself enough time, don't see the clock running. Follow the above advise and when you're done with tuning, drive your bike for 2-3 days before you can check your mileage and plug because bike takes time to adjust itself, to get habituated of the change in the new AFR.
[MENTION=28527]sibun[/MENTION] i hope i have able to make this understandable to the people upto your understanding level?

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Glad that I could be of some help. How is the bike's performance now?

@All, on February 2016 my bike has completed 3 years. I have been sharing my experiences with the bike since 7,000 kms. Now, it has clocked 39,000 kms and still love to ride it. Done multiple trips varying from 100 kms to 700 kms at a stretch. Never let me down. Never disappointed me. All I have done is service it regularly at an interval of 2500 kms.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Its very good and way better than before. No cold starts now. Warming up once in morning for 10-15 secs does the job for whole day. I think mileage has also increased . Have not tested it yet though.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Which bike is good overall
and have better engine reliability.hero splendour or Honda dream yuga because I am going to purchase soon. Guys give your valuable advice.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

How much mileage it gives

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

I have not tested it yet.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Good to know that. Always maintain the bike in mint condition. It will never let you down. Read Paul sir's post several times and understand it clearly before tuning.Check the mileage for atleast 500 kms for now. After that, you can decide whether to tune further or not. I'm scared to touch the fuel screw any day

Did you use the wax which you have bought? After experimenting [MENTION=29030]Pinaki[/MENTION] sir's post and [MENTION=28527]sibun[/MENTION] sir's post regarding the wax, I found something. I bought motomax liquid polish and Formula 1 car wax. The cloth which was used for polishing the bike with Motomax liquid polish turned from yellow colour to black colour. It removes considerable amount of paint for sure. So, stopped using it.

I tried the same with Formula 1 wax. The colour of the cloth did not change.

Then i took some motomax liquid in between my thumb and forefinger and rubbed it. I felt some grain like particles in the fingers. The same feeling was there with Formula wax also. I thought that I was imagining and so I took some Colgate gel tooth paste and did the same. It was smooth and I did not feel any grainy particles. I concluded that the particles were abrasives. So, make sure that the wax has not got any abrasives.

Members correct me if I'm wrong.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Which bike is good overall
and have better engine reliability.hero splendour or Honda dream yuga because I am going to purchase soon. Guys give your valuable advice.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

You can never go wrong with a splendor. I'm riding a passion pro and getting 72+ kmpl for the past 3 years. You can expect the same with a splendor too.

Don't know much about Dream Yuga. Mr.Dude creative can clear your query regarding that.

Re: Hero Moto Splendor/Joy/CD-Dawn/Passion

Not till now because of exams.
I dont think the wax has abrasives. Did you rub the wax with the same thumb and forefinger with which you rubbed the polish?