TVS Jupiter or something else?

Velmurugan · 17th February 2021, 19:03

Dear Srini,
Thanks for your quick response. During first incidence, I changed the sparkplug. But still it was not starting, though old plugf was clean & good.
when kick starting I dont see any hard resistance or restraint

rakesh_r · 17th February 2021, 19:07

Quote:

Originally Posted by Velmurugan

I am terribly confused and really look forward to some trouble shooting from experts in this Forum.

1- Did you try opening the Fuel tank lid and closing, maybe there is an airlock that's happening and choking the engine from getting the fuel.
2- Does the scooter have a side stand engine cut off switch, pardon my poor knowledge on scooters, asking since my Activa 125 has one.

Velmurugan · 17th February 2021, 19:10

Quote:

Originally Posted by rakesh_r

1- Did you try opening the Fuel tank lid and closing, maybe there is an airlock that's happening and choking the engine from getting the fuel.
2- Does the scooter have a side stand engine cut off switch, pardon my poor knowledge on scooters, asking since my Activa 125 has one.

Thanks for the response.
Yes one of my good friend(Somnath) told me the same, i.e. open the fuel lid & close it. That did not work too.
side stand - no such switch wired to to ignition etc.

rakesh_r · 17th February 2021, 21:06

Quote:

Originally Posted by Velmurugan

Thanks for the response.
Yes one of my good friend(Somnath) told me the same, i.e. open the fuel lid & close it. That did not work too.
side stand - no such switch wired to to ignition etc.

Further-
While kicking- Do you feel the kicker going down freely or
While using the starter- Do you "Hear" the starter sounding as if it is turning freely?

Velmurugan · 17th February 2021, 21:23

Quote:

Originally Posted by rakesh_r

Further-
While kicking- Do you feel the kicker going down freely or
While using the starter- Do you "Hear" the starter sounding as if it is turning freely?

During Kick Start, Kicker is normal, neither to hard nor too free. Its the same as it was in new scooter.
Starter sounds is also normal. yes due to this problem, the battery drained and starting was somewhat different; but after charging the battery, it is now sounding normal
.
Thanks for you response.
I was suspecting some electrical wiring issue or some other issue but TVS dealer says, if that being the case, the system shouldnt be running at all.

srini1785 · 18th February 2021, 11:47

Quote:

Originally Posted by Velmurugan

During Kick Start, Kicker is normal, neither to hard nor too free. Its the same as it was in new scooter.
Starter sounds is also normal. yes due to this problem, the battery drained and starting was somewhat different; but after charging the battery, it is now sounding normal
.
Thanks for you response.
I was suspecting some electrical wiring issue or some other issue but TVS dealer says, if that being the case, the system shouldnt be running at all.

Battery drain indicates a leak in the circuit. So i would check the entire circuit including the connectors for any kind of shorting or grounding. The carb of the Jupiter has an over throttle protection switch. If that switch is open then the connection between the ignition coils and the plug is broken and there would be no ignition.

Velmurugan · 18th February 2021, 14:02

Quote:

Originally Posted by srini1785

Battery drain indicates a leak in the circuit. So i would check the entire circuit including the connectors for any kind of shorting or grounding. The carb of the Jupiter has an over throttle protection switch. If that switch is open then the connection between the ignition coils and the plug is broken and there would be no ignition.

OK Thanks Srini, I will figure out on these leads and will keep you posted with outcome. thanks vel

vennarbank · 18th February 2021, 14:23

Quote:

Originally Posted by Velmurugan

OK Thanks Srini, I will figure out on these leads and will keep you posted with outcome. thanks vel

I am not sure if your vehicle has a led light inside the under seat storage area. If so please check if it is on, even when you close the seat. I verified my wife's Zest by placing mobile with camera running inside and found that led does not goes off even after seat is firmly closed. So removed the led light and now everything is good.

Velmurugan · 18th February 2021, 14:25

Quote:

Originally Posted by vennarbank

I am not sure if your vehicle has a led light inside the under seat storage area. If so please check if it is on, even when you close the seat. I verified my wife's Zest by placing mobile with camera running inside and found that led does not goes off even after seat is firmly closed. So removed the led light and now everything is good.

Negative. No such LED lights are installed below the seat.

sagarpadaki · 18th February 2021, 14:29

Quote:

Originally Posted by Velmurugan

Negative. No such LED lights are installed below the seat.

Maybe the tappet clearance is not within spec. Could you ask the service guys to check and adjust the tappets?

In my opinion, this is not an electrical/voltage drop related problem. More to do with the something going out of spec on heating and returning to spec on cooling.

Velmurugan · 18th February 2021, 14:36

Quote:

Originally Posted by sagarpadaki

Maybe the tappet clearance is not within spec. Could you ask the service guys to check and adjust the tappets?

In my opinion, this is not an electrical/voltage drop related problem. More to do with the something going out of spec on heating and returning to spec on cooling.

Noted. Thanks. Will check this out as well.

adi.mariner · 4th April 2021, 16:51

Hello. I ride a 2013 TVS Jupiter and my in-laws have a 2019 TVS Jupiter. After riding their scooter, I felt it to be twitchy/unstable in the handling department. It is something like when I am riding in a straight line, the scooter doesn't go in a straight line and I have to constantly give small corrections to keep going in a straight line. Can there be any particular reason for this or something which needs to be checked. My wife also feels the same when riding the newer Jupiter.

PaddleShifter · 4th April 2021, 17:24

Quote:

Originally Posted by adi.mariner

It is something like when I am riding in a straight line, the scooter doesn't go in a straight line and I have to constantly give small corrections to keep going in a straight line.

Could this be related to alignment by any chance? I have observed slight misalignment between front and rear tyres of motorcycles driving in front of me.

Have a look at other causes in a discussion following post 101 on page 7 of this thread by member para_7k.

https://www.team-bhp.com/forum/motor...ml#post4132092 (TVS Jupiter or something else?)

girimajiananth · 13th July 2022, 17:19

Has anyone retro installed a front wind shield on the old jupiter ( not the jupiter classic). I need to install this as I take my kid for nearby runabouts ( I usually take him in my car where I can belt him in the rear seat) and I feel a windshield can have some protection against direct wind to his face .

I ordered one from Amazon, need to visit my mechanic once it arrives.

rajivr1612 · 13th July 2022, 21:20

Sorry Mods, I could not find the appropriate thread. Please shift to the correct thread.

My query is regarding Jupiter tyres.

I have a 2018 Jupiter Classic for which I want to change tyres. The stock tyre size is 90/90/R12 both front and rear. I find the stock tyre size low on grip and thereby confidence.

I would like to upgrade to the Ntorq tyres which is 100/80/R12 front and 110/80/R12 rear.

Can experts please let me know the pros and cons?

Thanks.

17th February 2021, 19:03	#166
Velmurugan BHPian Join Date: May 2010 Location: Coimbatore Posts: 86 Thanked: 29 Times	Re: TVS Jupiter or something else? Dear Srini, Thanks for your quick response. During first incidence, I changed the sparkplug. But still it was not starting, though old plugf was clean & good. when kick starting I dont see any hard resistance or restraint
	() Thanks

4th April 2021, 16:51	#177
adi.mariner BHPian Join Date: Mar 2019 Location: Pune Posts: 524 Thanked: 1,290 Times	Re: TVS Jupiter or something else? Hello. I ride a 2013 TVS Jupiter and my in-laws have a 2019 TVS Jupiter. After riding their scooter, I felt it to be twitchy/unstable in the handling department. It is something like when I am riding in a straight line, the scooter doesn't go in a straight line and I have to constantly give small corrections to keep going in a straight line. Can there be any particular reason for this or something which needs to be checked. My wife also feels the same when riding the newer Jupiter.
	() Thanks

13th July 2022, 17:19	#179
girimajiananth BHPian Join Date: Oct 2012 Location: Bangalore Posts: 648 Thanked: 668 Times	Re: TVS Jupiter or something else? Has anyone retro installed a front wind shield on the old jupiter ( not the jupiter classic). I need to install this as I take my kid for nearby runabouts ( I usually take him in my car where I can belt him in the rear seat) and I feel a windshield can have some protection against direct wind to his face . I ordered one from Amazon, need to visit my mechanic once it arrives.
	() Thanks

13th July 2022, 21:20	#180
rajivr1612 BHPian Join Date: Dec 2012 Location: Chennai Posts: 617 Thanked: 766 Times	Re: TVS Jupiter or something else? Sorry Mods, I could not find the appropriate thread. Please shift to the correct thread. My query is regarding Jupiter tyres. I have a 2018 Jupiter Classic for which I want to change tyres. The stock tyre size is 90/90/R12 both front and rear. I find the stock tyre size low on grip and thereby confidence. I would like to upgrade to the Ntorq tyres which is 100/80/R12 front and 110/80/R12 rear. Can experts please let me know the pros and cons? Thanks.
	() Thanks