Re: Honda Unicorn Dazzler

Today my mechanic had me stumped. I've been having fuelling problems on my dazzler for the past three days. It got bad enough that i got the carburettor cleaned, two times in the last three days,but still the problem wont go away. So i took it again to a different mechanic this time, one who does work on my bike often. Well, after fiddling around for some time he pulled a cable from under the tank, put it to the mouth of a small engine oil can he had, and started the engine. Large amounts of white smoke bellowed from the exhaust as he revved the engine. When i tried to enquire what he had just done, he dodged the question. Can someone enlighten me what exactly he did, or attempted to do? Engine decarb?

The bike did work smoothly for a while, but back to it's terrible self once i returned to the office. Planning have to have a lookat the carb myself once i get home. Not sure what the fuelling issue is, possibly the slide getting stuck or choke cable.

P.S. to describe the problem i'm having, while I'm riding when i close the throttle and then open it , as it opens there is hesitation in the fuel delivery. After about part throttle there's no problem. But i do get the sense that there is some surging in the power delivery. I did get the carb cleaned twice, but no luck. Going to get it cleaned it once more, if still there's any dirt then will have to look elsewhere fr the culprit.

Re: Honda Unicorn Dazzler

Dont know what your mechanic did, other more experienced members may help you
But what problems your bike has ?????
elaborate on whats happening with your bike because of this "fuelling problem" [MENTION=34163]easy_rider[/MENTION]

----consecutive posts auto-merged-----

Water in carburator may be, I had a TVS victor it had the same issue and then the engine dies, again kick start then few meters the same story
Fill fuel from a different fuel station

Re: Honda Unicorn Dazzler

Added it in the P.S. When I close the throttle and then as I open it , there's hesitation in the fuelling. Well if I'm riding in town in traffic, then the engine does die quite often. didi get the carb cleaned and the bike did run smoothly for a while, abt 50 kms or so max, then back to it's earlier self.

Thanks for your reply Neil, will have a look at it.

Re: Honda Unicorn Dazzler

Empty the fuel tank and also get the carb cleaned once more,collect the fuel in a bottle and see if you find water
Check your Air filter too if its dirty replace it.

Re: Honda Unicorn Dazzler

Will do that. Cheers, thanks again!

Re: Honda Unicorn Dazzler

Its mostly occurs due to impure petrol
Try changing petrol and clean the tank if it has impurities

Sent from my Nexus 5 using Tapatalk

Re: Honda Unicorn Dazzler

There is a tread wear indicator on your tyre sidewall. If your tyre has worn out to the level of the indicator its time to change the tyres. I changed my rear tyre at 23400 kms. But to be honest it still had some life left in it, the tread thickness was still 1mm more than the indicators. So it would have run about 2000 kms more easily. But I was running with 5 punctures since the last 3000 kms and since I had the money at the time I changed it instead of getting all 5 punctures repaired.

Whoa..!! That sounds like he had diluted petrol + oil in the can. As he revved the engine the oil burned giving out whitish smoke..!! I have read that small amounts of 2T oil mixed with petrol keeps the carb lubricated and prolongs its life, but what the mech did to your bike just sounds bat-shit crazy. Any way, this is just my theory - I may be completely wrong.

Regarding your fueling problem, like neil said, be sure that your petrol is clean. Fill from a reputed pump. Ensure that your air filter is also clean.

After that turn your air/fuel mixture screw of the carb to 1.5 turns out from complete close. Set your idle rpms at 1400 rpms when the engine is hot.

Run for some 50-100 kms, see how the bike is responding. Then follow next step is things are still not ok.

Once your engine is hot and idling, set your bike on center stand, take off the seat, take a rag of cloth, make it into a ball and block the air inlet under your seat. You will see that the engine will surge to 3000-4000 rpms. Do it two three times. What is happening is that because you are blocking the air, the engine vacuum is sucking more petrol from the jets. As a result engine surges but the jets also get cleaned if they are partially clogged. Good clean petrol is a must for this. Don't use adulterated petrol.

After you do all this, observe the bike for some 50-100 kms. See if you are facing same problem. If yes then it may be time to open up the carb and check if the diaphragm is ok. There may be a tear in the rubber which may be causing the problem. Also check that the slides is moving smoothly. It should not get stuck anywhere.

Update us any how.

Re: Honda Unicorn Dazzler




I have faced the same problem, when I was using K&N air filters for about 15k kms. The filter ruined my carburetor slide Then after replacing the slide, and back to stock filters, now it's fine. In my case the slide was not moving properly during acceleration.
My suggestion is check the slide for its movement, then the spring and the rubber valve like something. And please check your air filter also..
PS: But still after replacing K&N, I am missing that grunting sound and pickup





Sent from my PI39100 using Tapatalk

Re: Honda Unicorn Dazzler

Thanks for the response Plasmabhai, appreciate the help.

Firstly I figured what the mechanic did. The hose he disconnected goes from the secondary air system(PAIR in the manual) to the intake mouth to which the carb is attached. Visible from the left of your engine. The mixture(possibly engine oil) he introduced in here passed straight to the engine via intake. So I guess he was trying engine decarb. Whether this is the correct procedure to do so, I doubt much.

Secondly i took fuel samples from both the tank and the float chamber. Both samples were clean, no problem there.

Next I detached the choke cable from the carb but plugged the opening with the same small metal cylinder attached to the choke cable alongwith the spring. This actually improved the fueling quite a bit. But not completely. Maybe the choke cable was getting stuck, the spring did have some rust like white residue around it when i opened it and wasnt holding it's shape properly. Possible maybe, but probably not the main culprit.

Next, attempted to tune the bike. Managed a good tune, and the problem seemed to have almost gone. Certainly the heavy lurching that I used to experience is not present anymore. But still the throttle is a little uneven on close to partial(about 1/4th) opening. But I havent changed the air filter yet. And this unevenness I've had previously too.I suppose a change of air filter should make it a lot smoother. Plus i guess my engine does need a proper engine decarb. It's now run nearly 60,000 kms.

Thanks a lot for your help guys. Will replace the air filter and see how it goes.

Re: Honda Unicorn Dazzler

I have been using my dazzler from over 2 yrs now. Done abour 22k+on the odo. I must admit its an excellent bike. Never gave me any prob till date. Surprisingly the mileage that Dazzler giving me is incredible for city driving. I am consistantly hitting 60kpml mileage. I have calculated it using the Mileage tool from about 6 months.

I have changed only the chain sprocket and battery recently and the rest is all good. I went to the service yesterday and to my surprise the accessories were not available with the dealer. He says as the model is dis continued, it seems to be very difficult to find the parts/accessories.

I need to know the below things from the techies here. Please help me on this.
1. The honda mechanic said that the compression was very low. he had to remove, pump it up and then get it going is what he said. he advised me to change the Valves which he quoted might cost me 2k. He showed me some oil applied exactly on the opposite side of the spark plug and he was referring to that area. Can some one tell me what is the issue with my bike.
2. Being a 150cc bike, it can easily hit 90+ but I see it struggles to pull 2 ppl in a parking slot up wards in 2nd gear. I had to down shift to 1st gear to get going. Is this common with all dazzlers?
3. Also any one using the beading seat cover for dazzler? if yes, can some one post the links, details, price etc. I am asking for this as the cat is really tearing up my seat cover.

Mods, If I have posted anything wrong here or in the wrong thread, my sincere apologies. Please move/delete the post.

Re: Honda Unicorn Dazzler

Just ask from the mechanic that what should be the realistic compression for an 22000kms old bike, get yourself an compression tester as that is the only way of knowing the health of the engine, the engine should give minimum of 100psi pressure, if the reading comes below this mark you have to go for either valve change or top end rebuild, if the reading comes between 125 to 145 i would say you are good.Get the bikes clutch plates checked.

Re: Honda Unicorn Dazzler


Just show the bike to me once as you stay in the same locality where I live. I will be able to assess exactly. I have a compression tester, but its not with me right now. I will try to get it later and we will probably able to check the exact compression value. Since your bike is running now, I am sure the compression is above 100 psi, the minimum pressure required for an engine to work. I suspect the mechanic referring to gasket leak between the cylinder and head, which might decrease the compression. If the gasket is leaking, then just replacing it is enough. Replacement of valves not needed for just 22k kms, unless there are symptoms that valves have problems (which in your case I don't suspect).

Re: Honda Unicorn Dazzler

Hey guys..

I need your opinions on taking Unicorn Dazzler to Leh bike trip?

Is there anyone who has done it here?
If yes, any important tips?

Thanks in advance

Re: Honda Unicorn Dazzler

'Its more about the rider than what he rides.'

For tips, read through the Leh planner thread.

Re: Honda Unicorn Dazzler


Yes, its totally true and I agree with that.
But my concern is whether the Dazzler can work normally at those altitudes and terrain..