motor stutter

Hi all, riding Y15ZR (2020), Just had a problem when going uphill, motor seems to have a stuttering acceleration.
Didnt have this problem, only occur in the past few weeks.

Emmm... It's likely a carburetor issue

What you're doing is called lugging the engine. Basically there isn't enough power being put out to get the bike moving, so it's trying to stall. This is normal. Or else, try send your motorbike to workshop and check.

kiss_asia wrote:

Emmm... It's likely a carburetor issue

I do not think this is the cause of the main problem.

Danial wrote:

Hi all, riding Y15ZR (2020), Just had a problem when going uphill, motor seems to have a stuttering acceleration.
Didnt have this problem, only occur in the past few weeks.

this is quite a common thing. to move your motorbike uphill, you need to use higher gear.

Danial wrote:

Hi all, riding Y15ZR (2020), Just had a problem when going uphill, motor seems to have a stuttering acceleration.
Didnt have this problem, only occur in the past few weeks.

I believe this has something got to do with your engine. There are 6 main reasons as to why your motorbike loses power when accelerating. They are possibly due to the plugged jet in the carburetor, broken carburetor spring, vacuum leak on the carburetor or intake boot, carburetor spring is on backwards, extra slack in the throttle cable or poor timing advance.

sc3ml wrote:

I believe this has something got to do with your engine. There are 6 main reasons as to why your motorbike loses power when accelerating. They are possibly due to the plugged jet in the carburetor, broken carburetor spring, vacuum leak on the carburetor or intake boot, carburetor spring is on backwards, extra slack in the throttle cable or poor timing advance.

yes, you are right. might be due to the plugged jet in the carburetor.

jomthai wrote:

yes, you are right. might be due to the plugged jet in the carburetor.

If you’re having acceleration problems, the first thing you’ll probably want to look at is the jets inside the carburetor. The jets are tiny passageways that the fuel flows through to combine with air so the engine gets the proper air-fuel mixture. These include both the main jets and the pilot jets.

sc3ml wrote:

I believe this has something got to do with your engine. There are 6 main reasons as to why your motorbike loses power when accelerating. They are possibly due to the plugged jet in the carburetor, broken carburetor spring, vacuum leak on the carburetor or intake boot, carburetor spring is on backwards, extra slack in the throttle cable or poor timing advance.

Wowww!! Sounds like you're a mechanic!! Maybe this clue can solve the TT's problem

sc3ml wrote:

If you’re having acceleration problems, the first thing you’ll probably want to look at is the jets inside the carburetor. The jets are tiny passageways that the fuel flows through to combine with air so the engine gets the proper air-fuel mixture. These include both the main jets and the pilot jets.

These jets often get clogged with either debris or components in gas, such as ethanol. When these get clogged, fuel cannot be delivered so your engine will be getting too much air and not enough fuel, thus causing loss of power when accelerating. if you suspect this is the case with your motorcycle acceleration issues, you’ll need to take your carburetor off and partly take it apart. This may be a bit annoying to have to do, but it’s good practice to examine and clean your carburetor occasionally anyway. Spraying your carburetor with carb cleaner and calling it good doesn’t count as cleaning it; you will need to do a much more thorough cleaning than that. Or maybe just send your vehicle to the service centre then later fuel up with good and powerful fuel. I think this will do the deal.

So, how to clean the carburetor effectively? Is there an easy way?

amirq wrote:

So, how to clean the carburetor effectively? Is there an easy way?

You’ll need to remove the float bowl (remove all of them if there are multiple) and remove the jets. If you’re not sure where the jets are in your specific carburetor, you should easily be able to find a diagram online to locate it. It’s usually easily removable with a flat head screw driver. Next, take the jet and spray some cleaner through it. Make sure you can see it coming out the other end. You can also blow some compressed air through it to make sure you got any debris out. Do this for all jets on the carburetor to make sure all of them are clean. Having the right tools makes a job like this a lot easier. Then try using a green environment fuel for your engine, that'll do the trick in making sure the whole system works well.

sc3ml wrote:

You’ll need to remove the float bowl (remove all of them if there are multiple) and remove the jets. If you’re not sure where the jets are in your specific carburetor, you should easily be able to find a diagram online to locate it. It’s usually easily removable with a flat head screw driver. Next, take the jet and spray some cleaner through it. Make sure you can see it coming out the other end. You can also blow some compressed air through it to make sure you got any debris out. Do this for all jets on the carburetor to make sure all of them are clean. Having the right tools makes a job like this a lot easier. Then try using a green environment fuel for your engine, that'll do the trick in making sure the whole system works well.

I have to mention this too petrol usage as much as important. For ur motor best use primax 97. Usually if motor have problem with 95 you need to change to 97. Since the fuel also can cleans most of the engine deposits, most likely the stutter also will be gone.