GZ 125 TPS Question

[AdamShoobidoo]

HI, new to the forum, i signed up because i can't really find an answer to this question.

Basically i have a 2003 GZ 125 and am having problems with the carb, i'm looking at a new one on ebay but they all say they are only for bikes without a TPS, well mine has a TPS and the only one i can find with a TPS is £130 used, almost triple the cost of a new one without. Now i don't really understand how a TPS works but if i get the carb WITHOUT tps, can i just remove the cabling and use the bike without it? Or am i stuck with a TPS forever?

I distinctly remember one time i was riding for at least a few days with the TPS unplugged and didn't even realize, so it didn't make any noticeable difference in performance, so what is even the point of it?

Thanks.

[rennie]

Hello and Welcome

I have no idea but someone will

[mikestrivens]

Hello and welcome, as above

[SlowBusa]

I didnt know any Carbed models had a TPS

I cant see any reason a carb model would have one

Try disconnecting it again, On a FI bike a TPS thats not set right will make the bike run really bad at lower revs

[Gerontious]

I didnt know any Carbed models had a TPS

 

 

Apparently it does because you can buy one as a replacement part... also, I believe some Yamaha's and carbed 1200 bandits have one. But exactly why? beats me.

[SlowBusa]

I didnt know any Carbed models had a TPS

 

 

Apparently it does because you can buy one as a replacement part... also, I believe some Yamaha's and carbed 1200 bandits have one. But exactly why? beats me.

 

Me too, cant see any benefit of having one on a Carbed model

[Via]

I didnt know any Carbed models had a TPS

I cant see any reason a carb model would have one

Try disconnecting it again, On a FI bike a TPS thats not set right will make the bike run really bad at lower revs

 

This question was asked recently and said same thing but yeah they do for ignition retard/advance...

https://www.themotorbikeforum.co.uk/viewtopic.php?f=5&t=66775

Anyway guess from that thread no-one knows so just repair carb with gorilla glue

[fastbob]

I didnt know any Carbed models had a TPS

 

 

Apparently it does because you can buy one as a replacement part... also, I believe some Yamaha's and carbed 1200 bandits have one. But exactly why? beats me.

 

Me too, cant see any benefit of having one on a Carbed model

Bandits definitely have a TPS stuck on the side of the carbs but it beats me what for . I guess it feeds some data to the engine management system.

[Grumpy Old Git]

Correct - It adjusts the Timing for 'best performance' based on the input. Removing from a 125 will make (IMO) diddly squat difference!

[AdamShoobidoo]

Thanks for replies (and going easy on me). So does that mean i could get a carb without a tps and it would still work?

[SlowBusa]

Have you tried cleaning the carb ?

[Via]

Have you tried cleaning the carb ?

 

Carbs are fiddly but totally serviceable, getting to know your carb will also save you headaches in future with rough running / idling etc...

[AdamShoobidoo]

I've cleaned the carb twice. The problem is it's running too rich, but no amount of adjustments makes it run leaner, it's always rich and just cuts out after a minute or so riding, if i can even get it started.

[SlowBusa]

I've cleaned the carb twice. The problem is it's running too rich, but no amount of adjustments makes it run leaner, it's always rich and just cuts out after a minute or so riding, if i can even get it started.

Stupid Q but have you cleaned the Air Filter?

[AdamShoobidoo]

I haven't cleaned the air filter, but it's only about 6 months old.

[SlowBusa]

I haven't cleaned the air filter, but it's only about 6 months old.

 

Still Worth checking

Sounds like the jet hole might have been cleaned with a needle.......and probably expanding the hole so too much fuel is getting in

[AdamShoobidoo]

I haven't poked any needles around so that cant be it.

Will the non tps carb work anyone?

[SlowBusa]

I would say yes

If bike runs fine without TPS connected then it wont make a difference if you buy the none TPS variety

[AdamShoobidoo]

Thanks, i'll go for it.