Suzuki2Strokes.com

Sundial Moto Sports

Suzuki Two-Stroke Message Board
Suzuki2Strokes.com
It is currently Wed Mar 20, 2019 2:08 am

All times are UTC - 6 hours




Post new topic Reply to topic  [ 22 posts ]  Go to page Previous  1, 2
Author Message
PostPosted: Wed Dec 26, 2018 9:57 pm 
Offline
Still in the Driveway

Joined: Thu Dec 20, 2018 8:43 pm
Posts: 6
Country: US
Bikes owned: TS185
Better pics of TS185 and GT185 bikes:


Attachments:
DSCN4798 Document.jpg
DSCN4798 Document.jpg [ 200.79 KiB | Viewed 436 times ]
20170917_181459_Burst01.jpg
20170917_181459_Burst01.jpg [ 122.01 KiB | Viewed 436 times ]
Top
 Profile  
 
PostPosted: Fri Dec 28, 2018 7:16 am 
Offline
Novice racer
User avatar

Joined: Wed Jan 18, 2012 8:01 pm
Posts: 940
Location: North of Albany, NY
Country: USA
Bikes owned: T500R (now), T500M (40 yrs ago)
Phoenix wrote:
- Pulled carburetor and disassembled. One issue found after disassembly was a damaged o-ring. The o-ring basically seats between the needle jet and main jet, in a pocket in the bottom of the fuel bowl). A damaged o-ring will allow the fuel in the bowl to pull directly into the needle jet along with fuel coming from the main jet. Damage to o-ring may have occurred during earlier assembly operations when installing the fuel bowl onto the main carb body. When reassembling the carb, seating the o-ring into the pocket of the fuel bowl is tricky.


I am no expert on the TS185, but that doesn't seem like the correct part being used. Never seen a round oring there before on a Mikuni - usually more of a flat seal.

Image

Suzuki NEEDLE VALVE SE Part # 13392-58600


Top
 Profile  
 
PostPosted: Fri Dec 28, 2018 12:10 pm 
Online
To the on ramp

Joined: Tue Mar 10, 2015 12:35 pm
Posts: 444
Location: Wales
Country: WALES
Bikes owned: suzuki gt 550j
Is this your carb?
https://www.suzukipartshouse.com/oempar ... tor-ts185a" onclick="window.open(this.href);return false;
If so which part number is the o ring you think is faulty?

_________________
98 carb Blackbird and GT550j


Top
 Profile  
 
PostPosted: Fri Dec 28, 2018 5:46 pm 
Offline
On the main road

Joined: Sat Sep 05, 2015 3:14 pm
Posts: 160
Location: southeast pa
Country: us
Bikes owned: GT
Does your carb have the main jet in the union bolt at the bottom of the float bowl? that is very similar to the 75 yamaha DT175, (dirt always settles to the bottom and clogs the main jet.) You are right with the torn o-ring it will suck excess gas from the bottom of the float bowl and be to rich a mixture.
I think O-ring part number is 13294-28010. Part # 9 in the breakdown at alpha sports, and suzukipartshouse under ts185k not ts185a
Nice bikes :up:

_________________
76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe


Top
 Profile  
 
PostPosted: Fri Dec 28, 2018 9:09 pm 
Offline
Still in the Driveway

Joined: Thu Dec 20, 2018 8:43 pm
Posts: 6
Country: US
Bikes owned: TS185
I was replacing the main jet and adjusting the jet needle. Same stall issue at full throttle. Chasing my tail….time to regroup.

Spoke with Steve (Suzuki guy) at the cycle shop and he steered me back to the basics of the fuel flow (pilot jet, needle jet and jet needle, main jet and float level). Steve indicated the main jet and float were likely culprits. A lot of the same advice I received from all on the Sundial participants (check jets and float settings).

Steve gave me a rough estimate on adjusting the float arms....hold the carburetor upside down and at an angle of 45 degrees...this takes pressure off the needle and seat assembly (from the float arm). At this point, the float arms should be almost parallel with the body/edge of the carburetor. Also, he noted that the carburetor should work fairly well with the stock jets (pilot 17.5 / main 125).

Carburetor back to the workbench..... :?

- My float level / arms were off quite a bit....this set the fuel level in the fuel bowl too low. Adjusted again and measured per specs in Clymers. Float arms are now almost parallel to body of carburetor. The Clymers manual had limited info, I misunderstood the adjustment detail.
- Also, the o-ring in the bottom of the fuel bowl (between main jet and needle jet) was damaged again. This caused excess fuel to bypass the main jet and flow into the needle jet. The area in the fuel bowl where the o-ring seats (pocket) was corroded and rough...cleaned the pocket area with a drill bit and sanded fine with emery and 400 grit paper. Custom fit with new o-ring. During reassembly of the carburetor, made sure to oil the o-ring/pocket area with 2 stoke oil to allow the o-ring to slide easily into place.
- Changed pilot jet back to original size 17.5, from 25, while I had the carburetor apart.
- Reset clip on jet needle back to center position.

Carburetor reinstalled in bike, drove very hard for an hour and no stall :P . Issue corrected. I think the main culprit was the float level (low fuel in bowl) which may have actually run the carburetor dry (momentarily) at full throttle. The leaking o-ring contributed to the flow. See attachment.

Will run the bike for a little longer and check the plug for color. Turned out to be simple issues, but this exercise gave me a much better understanding of Mukuni VM slide carburetors.


Attachments:
carb stuff.pdf [113.11 KiB]
Downloaded 19 times
Top
 Profile  
 
PostPosted: Sat Dec 29, 2018 3:59 am 
Offline
Novice racer

Joined: Tue Dec 16, 2008 11:37 am
Posts: 927
Location: Trowbridge UK
Country: UK
Bikes owned: T500R, SV1000S, TS125, Seeley T500
Well done, Phoenix persistents pays off :up: I have a TS125C and it revs hard to 8000+ rpm I imagine the TS185 should do nearly the same.

Cheers Geoff


Top
 Profile  
 
PostPosted: Wed Jan 02, 2019 12:37 pm 
Offline
Road race school

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 875
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
Excellent. Glad you got it fixed. And those bikes look mint! Very nice.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 22 posts ]  Go to page Previous  1, 2

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 9 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group
Sundial Moto Sports forum © by Eric F. Kalamaja
Suzuki2Strokes.com