Anyone experience a CLUNK when starting?

[Sokocanuck]

Soooo, you're not going to like this but I'm pretty sure it's just a boot between the carb and the engine. Like....slips on and is tightened with a band-clamp. I don't think there is anything that can take an o-ring. Seem like that could be a big issue? lol
I never thought of it as an issue. I just thought it was part of his dumbass modding.

[Sokocanuck]

Here is the bike. Notice the intake boots....

[Sokocanuck]

Close up of the intake

[mrbill5491]

Close up of the intake

There are no orings associated with those intake boots. When the clamps get old they lose their ability to tight down properly. If the boots are hard and cracked, new boots and new OEM clamps. How are you supporting the rear of the carbs?

[Sokocanuck]

Air leaks in the intake maniifold orings are also a major problem with GS bikes. Basically give us a run down on what youve done..some background history of the bike and what you know about its maintenance history. This will greatly help with some better diagnosis.

The more detailed info we have the better.

There are no orings associated with those intake boots. When the clamps get old they lose their ability to tight down properly. If the boots are hard and cracked, new boots and new OEM clamps. How are you supporting the rear of the carbs?

There was nothing there before and they flexed like crazy so I just installed a single bracket in the middle that attaches under the seat.

So where do the intake o-rings go?! Or are they not used for this bike? Should I change them to the type that uses o-rings?

[Steve]

So where do the intake o-rings go?! Or are they not used for this bike? Should I change them to the type that uses o-rings?

Your bike does not use o-rings on the intakes.

You can not change to a type that does use o-rings.

It was suggested earlier that the clamps lose their ability to hold the boots. Actually, the clamps don't really lose anything, it's the boots that dry up, shrinking in the process. With the smaller (thinner sidewalls) boots, the clamps can't go tight enough, so get new intake boots to restore proper size and pliability.

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