Flat spot at 1/4 to 1/2 throttle?

[nzspokes]

It will be worn needles and oval emulsion tubes, all Suzuki's with the type of carbs your bike has have this problem at some stage. I am surprised you made it this far they usually start giving problems around the 70,000k mark, maybe the pipe works with a slightly rich mixture better than the standard exhaust. You are talking wear in the 0.01mm range so it is hard to see with a eye-ometer.

Bingo, we have a winner.

Exactly what I was thinking. But of course the the expert mechanic that looked at the carbs would have looked for that.

[buggerit]

you might find this helpful, scroll down to photos etc
http://www.mtsac.edu/~cliff/storage/...ding_carbs.pdf

[swbarnett]

Bingo, we have a winner.

I hope so. Does sound like that's probably it.

Exactly what I was thinking. But of course the the expert mechanic that looked at the carbs would have looked for that.

Meh, we can't all know everything about every carb and I'm in no way qualified to judge.

[swbarnett]

you might find this helpful, scroll down to photos etc
http://www.mtsac.edu/~cliff/storage/...ding_carbs.pdf

Thanks, I found that on the Gixxer forum (gotta love Google). Haven't had a change to read it yet.

[nzspokes]

I hope so. Does sound like that's probably it.


Meh, we can't all know everything about every carb and I'm in no way qualified to judge.

You said you had a mechanic look at it. Why did they not work it out? I would suggest a better mechanic. try Alec at Sme in Whitford. This is basic stuff.

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[swbarnett]

Is anyone able to point out the parts that spanner spinner is talking about in the following diagram?

[eelracing]

Is anyone able to point out the parts that spanner spinner is talking about in the following diagram?

Part Numbers #13 & #17

[unstuck]

Looks like 17 in that pic.

[unstuck]

Part Numbers #13 & #17

Yeah, what he said.

[nzspokes]

#16 and maybe the needle.

[unstuck]

#16 and maybe the needle.

Think you will find that 16 is the jet, 17 is the tube.

[spanner spinner]

Interesting. So the fix would be to replace the needles and emulsion tubes, yes?

yep new needles and emulsion tubes. Seen people spend months rejetting these carbs and they still run like shit replace the needles and emulsion tubes and there sorted.

[nzspokes]

Think you will find that 16 is the jet, 17 is the tube.

No, 19 is the jet. Middle bit is the emulsion tube. Bit on top is the guide. Thats the bit that wears on these. I believe some carbs its part of the emulsion tube. Normally they tap out.

[swbarnett]

yep new needles and emulsion tubes. Seen people spend months rejetting these carbs and they still run like shit replace the needles and emulsion tubes and there sorted.

Thanks.

So what's your take on the diagram I put up earlier? I seem to be getting some conflicting opinions as to exactly which parts these are and you seem to be the one with the answers...

[Akzle]

Thanks.

So what's your take on the diagram I put up earlier? I seem to be getting some conflicting opinions as to exactly which parts these are and you seem to be the one with the answers...

try Alec at Sme in Whitford.

. .