Emulsion tube seal

General Discussion Forum for TRX Enthusiasts...

Moderators: trixynut, Mincehead, dicky, phuk72, Jak, Kevtrx849

Post Reply
User avatar
dandywarhol
Site Sponsor
Posts: 1639
Joined: Fri Nov 24, 2006 12:56 pm
Location: Edinburgh, Scotland

Emulsion tube seal

Post by dandywarhol » Sat Apr 04, 2015 10:25 pm

Can someone remind me if there's an "O" ring to seal the emulsion tube to the body? It's about 15 years since I changed tubes on a TDM and my memory is mush.

My TRX is drawing fuel past the left carb emulsion tube when idling (with the airbox off obviously) and if I cup my hand over the same intake the engine revs rise :shock: The fuel can be seen spraying down the carb between the tube and the body.
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

User avatar
Stu99
Site Sponsor
Posts: 774
Joined: Wed Jul 08, 2009 12:23 am
Location: Melbourne Vic

Re: Emulsion tube seal

Post by Stu99 » Sun Apr 05, 2015 12:15 am

There is an o-ring that seats in the jet block.
It must be true, I read it on the internet.

User avatar
Stu99
Site Sponsor
Posts: 774
Joined: Wed Jul 08, 2009 12:23 am
Location: Melbourne Vic

Re: Emulsion tube seal

Post by Stu99 » Sun Apr 05, 2015 12:24 am

Quick pic.
You do not have the required permissions to view the files attached to this post.
It must be true, I read it on the internet.

User avatar
dandywarhol
Site Sponsor
Posts: 1639
Joined: Fri Nov 24, 2006 12:56 pm
Location: Edinburgh, Scotland

Re: Emulsion tube seal

Post by dandywarhol » Sun Apr 05, 2015 1:22 am

Thanks Stu - it's coming back to me now. I guess the old ring has perished with ethanol/age. I've got an "O" ring kit in the garage - I'll try a repair tomorrow. Thanks again. :D

Are those Factory Pro tubes?
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

User avatar
Stu99
Site Sponsor
Posts: 774
Joined: Wed Jul 08, 2009 12:23 am
Location: Melbourne Vic

Re: Emulsion tube seal

Post by Stu99 » Sun Apr 05, 2015 1:48 am

Yep, thats my spare set with a factory pro kit installed, the ones on my bike have a tovami kit with factorry pro tubes.
It must be true, I read it on the internet.

User avatar
dandywarhol
Site Sponsor
Posts: 1639
Joined: Fri Nov 24, 2006 12:56 pm
Location: Edinburgh, Scotland

Re: Emulsion tube seal

Post by dandywarhol » Sun Apr 05, 2015 5:11 pm

Job done - found an O ring in my box of bits and no more leaking. Idling much better. Might have to do the emulsion tubes sometime - at 11,000 miles there's a little bit of ovalling. The previous owner was a canny rider and didn't rev much - the slides rattle back and forth if lugging the engine and that wears the tubes

I was being an erse when the idle speed rose when I partially covered the mouth - I'd forgotten about the vacuum pipe for the fuel tap :oops:
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

Post Reply