A forum for owners of Yamaha TTR250 trail and enduro bikes!

Members Login
Username 
 
Password 
    Remember Me  
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Will not start on cold with out bumping
Post Info TOPIC: Will not start on cold with out bumping
Keith89


Senior Member

Status: Offline
Posts: 201
Date:
Will not start on cold with out bumping
Permalink  
 

So my bike was getting hard to start from

cold checked compression it was done so new piston and rings have been fitted valves relapped new stem seals timing chasing and cam drive gears built up and runs great once warm so I stripped the carb cleaned everything and rebuilt still the same I have noticed the the link pipe from carb to airbox is split near what I think is called the scavenger box bit would this cause the poor start from cold? And could I replace with a pecie of silicone pipe as I have heaps of it? 

Thanks keith



__________________

2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
TTRfan


Super Guru

Status: Offline
Posts: 8607
Date:
Permalink  
 

Could be choke not working? When warmed up and on tick over, does pulling out the choke make a difference? Should make the engine blubber and die.

Regarding the split, which part do you mean from fiche pic below?

Brian

airbox_fiche.jpg



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
Keith89


Senior Member

Status: Offline
Posts: 201
Date:
Permalink  
 

Yeah the choke when hot makes it splutter and die. The split is part 14 at the top it's split.

__________________

2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
TTRfan


Super Guru

Status: Offline
Posts: 8607
Date:
Permalink  
 

I looked at some of the intake boots on my spare airboxes and some have suffered damage in that area. Just to check, is it in the area I have arrowed in the pic below?

If not too bad then silicone should seal it otherwise drop me an email if you need a replacement.

Brian

Intake boot.jpg



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
Keith89


Senior Member

Status: Offline
Posts: 201
Date:
Permalink  
 

Yes that's the part I ment :) I will try silicone tmrrow it runs perfect I did 300 miles today with a local bike meet over 100 bikes on a poker run over the licht ski range and beyond once it was hot first push of the bottom and she was off its confusing me I'm getting to the point maybe trying a new carb it annoying

__________________

2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
locky


Guru

Status: Offline
Posts: 625
Date:
Permalink  
 

The diagram above, what's number 21 do ? Can't remember if I asked before !

__________________

2004 TTR250. White Brothers E series exhaust, modded airbox, rejetted, 13/48 c&s & many more mods..
hanzo


Senior Member

Status: Offline
Posts: 216
Date:
Permalink  
 

I think its just a resonator to keep down intake noise 😞   its discription in parts is listed as an "air chamber"



-- Edited by hanzo on Monday 10th of August 2015 09:32:13 AM



-- Edited by hanzo on Monday 10th of August 2015 09:32:50 AM

__________________
TTRfan


Super Guru

Status: Offline
Posts: 8607
Date:
Permalink  
 

See here for info on the mysterious black box wink



__________________

Exeter, Devon, UK

http://www.ttr250.com  - The one and only dedicated TTR250 FAQ!  

TIP: For easy viewing bookmark the "Recent Posts" view - http://ttr250.activeboard.com/p/recent/ 
Keith89


Senior Member

Status: Offline
Posts: 201
Date:
Permalink  
 

Silicone has done the job sealed it up and she now starts first push of the button happy days here's a little picture on my bike run yesterday.



Attachments
__________________

2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
Keith89


Senior Member

Status: Offline
Posts: 201
Date:
Permalink  
 

Yes I'm very tall haha never realised how big I look on the bike.



__________________

2005 ttr supermoto with dtx 125 wheels and front forks stainless sleeves to adapt ttr clamps to fit forks. 
peteBLUEttr


Super Guru

Status: Offline
Posts: 1721
Date:
Permalink  
 

Great riding shot Keith! Maybe wack it over in the Favourite pics thread in general banter section. I am tall too 6'3", You dont look too big for it



-- Edited by peteBLUEttr on Monday 10th of August 2015 01:24:31 PM

__________________

Pete. South Somerset, England.
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Will not start on cold with out bumping


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard