Yeah, all of those are flammable. If any gets sucked in through a crack it
would add fuel to the fire, so to speak, and increase your RPMs a bit.

-Kyle


On Wed, Oct 6, 2010 at 12:15 PM, Chris Besignano
<[email protected]>wrote:

> I am starting to suspect a leak in the carb boots. The vacuum line is new
> and I have plugged it with no change in idle speed. I heard someone mention
> spraying starting fluid, WD-40, Seafoam (I had to include this) on the boots
> while the bike is running to see if the idle speed changes. Any ideas on
> this method?
>
>
> On Wed, Oct 6, 2010 at 1:08 PM, Kyle Munz <[email protected]> wrote:
>
>> One way I've seen is to light a match or a lighter and hold the flame near
>> the hose. If it's sucking in air it'll pull the flame towards it. I probably
>> wouldn't suggest this method around the fuel system on your bike though ;)
>> You can also pick up a hand vacuum pump with a built in gauge at an
>> autoparts store. Pump it up to a couple of pounds and see if it holds it.
>> This will run you a few bucks.
>> A foot of vacuum line is only a few cents, you could always try just
>> replacing it. This is if you're suspecting the line of course.
>> Are we suspecting a leaky diaphragm in the petcock or perhaps the nipple
>> on the side of intake that the vacuum line connects to?
>>
>> -Kyle
>>
>>
>> On Wed, Oct 6, 2010 at 11:48 AM, Chris Besignano <
>> [email protected]> wrote:
>>
>>> Hi all,
>>>
>>> It's a quiet day on the forum so here's a question:
>>>
>>> How do I test if my bike has a vacuum leak? I suspect carb #2 (vacuum to
>>> petcock) is leaking and want to verify, what do I do?
>>>
>>> Thanks
>>>
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