Triumph Rat Motorcycle Forums banner
  • Hey everyone! Enter your ride HERE to be a part of September's Bike of the Month Challenge!
1 - 13 of 13 Posts

·
Registered
Joined
·
105 Posts
Discussion Starter · #1 ·
Hi folks,

Can anyone id the hoses marked with red and blue and what they should be connected to? Are the red hoses the same hose?

Thx,
Zohar



 

·
Premium Member
Joined
·
3,030 Posts
No, they are not the same hose.

Edit. See service manual 10.111. On a Cali bike the hose from the throttle bodies goes to the small purge control valve before the evap canister. The breather hose coming from the fuel tank should connect to the main nipple on the side of the evap canister.

The drain hose from the fuel tank filler cap, if I understand this correctly, should hang freely on the bundle of hoses on the left side of the engine. As it would on a non-Cali bike also.

[ This message was edited by: Martin_R on 2007-02-10 02:28 ]
 

·
Registered
Joined
·
105 Posts
Discussion Starter · #3 ·
Thx for responding. 10.111 (pictured below with evap canister) shows a different 4 way connection to the throttle bodies (underneath the throttle bodies). I capped that one off when I pulled the evap canister and purge control valve tubes.

The 4-way connection shown in my original post that I marked with red, is on top of the throttle bodies near the plugs and directly under the airbox. I can't find any reference in the shop manual indicating what it should be attached to...

If anyone knows what this is connected to or happens to pull their airbox off and could take note, it would be much appreciated.

ZM

 

·
Registered
Joined
·
1,065 Posts
It is the same tube. The vacuum lines from each throttle body bore connect to a single line.

If you have a evap cannister, the line goes to the purge control valve that connects to the evap cannister. And the line marked "to the tank" connects to the map sensor on the tank.

If you have removed the evap cannister, then the tube needs to connect to the map sensor on the bottom right side of the fuel tank - not to the purge control valve.
 

·
Registered
Joined
·
105 Posts
Discussion Starter · #5 ·
That was it. Top of throttle body to MAP sensor. New tune loaded. The engine is smooth and responsive with no stumbles and the scenery goes by a little quicker. Thx D.

More "extra" parts for the S3 spares bin:


 

·
Registered
Joined
·
14 Posts
Sorry to bring this thread back from the dead, but it is the best EVAP thread I could find. I am removing the the canister along with the SAI now and just want to be clear on the procedure.

The top of the throttle bodies (3 into 1) go to the MAP sensor mounted on the airbox. The bottom 3 to 1 on the throttle bodies get capped correct?

My questions are, does the tube to the fuel tank get hooked back up anywhere? (not the drain, the other one) Also, there is 1 small port on top of the throttle bodies, does that get capped as well?

I'm not sure how a CA model ended up all the way over on the East coast! Thanks in advance guys and gals!
 

·
Registered
Joined
·
466 Posts
Cap/block the tubes leading to the evap cannister.

The left tube on the tank is a breather. It connects to a one-way valve, and runs parallel to the tank drain line - draining under the bike. The valve tends to get stuck on many bikes stipping venting to the tank. You can remove this valve.

Which port on top of the throttle bodies are you refering to?
 

·
Registered
Joined
·
14 Posts
Thanks Power-Tripp, I almost capped the tank breather till I thought of the potential vacuum build up. For the tank vent I used an 1/8" fuel filter, (the kind you find in the tank of your weed-eaters).

The extra port on the throttle bodies is located on the top middle. You have the 3 that comes together and leads to the MAP, then 1 extra in the middle, it's just another vacuum port I believe. After looking and some pictures of other throttle bodies (here and eBay) I found that that extra port was capped, so I think they all have it, but only CA bikes with the EVAP system utilizes it.

I took it out last night after loading a tune and she seems to be alright. No CEL, and definitely more responsive. I installed the Jardine RT-1 slip-ons, SAI block offs, and removed the EVAP system.
 

·
Premium Member
Joined
·
667 Posts
Hi folks,

Can anyone id the hoses marked with red and blue and what they should be connected to? Are the red hoses the same hose?

Thx,
Zohar



So to confirm.:

Left / Blue hose - Breather hose going to evap. canister (has a small valve inline)
Right / Red - Overflow drain hose from the fuel tank filler cap (goes straight to the bottom of the bike)

Is this correct ?
 
1 - 13 of 13 Posts
Top