[HemiKat]

In my experience the best way to check for vacuum leaks is a can of brake cleaner.... Run the motor and spray into different areas, if there is a leak you will know it, they normally bog down when the suck in the cleaner. Then which ever area made a difference inspect it closely for issues.

My bike does the same thing. Hangs around 3k actually, I sprayed it down with brake cleaner and it bogs when I hit the air boots between the carbs and head.... I dont know if they are warped or if there are seals, some one else may be able to clue us in.

[md86]

Careful though , brake cleaner is fairly flammable . I set my bike on fire once with it .

[Kreylyn]

In my experience the best way to check for vacuum leaks is a can of brake cleaner.... Run the motor and spray into different areas, if there is a leak you will know it, they normally bog down when the suck in the cleaner. Then which ever area made a difference inspect it closely for issues.

My bike does the same thing. Hangs around 3k actually, I sprayed it down with brake cleaner and it bogs when I hit the air boots between the carbs and head.... I dont know if they are warped or if there are seals, some one else may be able to clue us in.

They dry out, and form small surface cracks. The rubber o-rings tend to flatten out and not seal as well after a while also.

The best thing to do if your boots are leaking, is just replace them. $22 each aprox. from the stealerships, and come with new o-rings. Each one has a specific part number, so be aware of that.

Krey

[Layinlowstang]

ok thanx guys...and I think I will stear clear of the brake cleaner dont need any fires..lol

[GSXfs600]

well i had the .000001% happen to me, so apparently its much more frequent