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Re: New Mystery, New Thread [Re: redninja] #146289 10/24/19 09:10 AM
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#brer15 Offline
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Make sure the carb boot isn't leaking at the seal. One of the most common times for a leak there is right after it is installed.
To reach maximum speed on the streets the tires should have maximum air pressure. 22 psi front, 25 psi rear.


2004 XT225 purchased new in October 2004 0 miles. Current miles over 27,000.
Re: New Mystery, New Thread [Re: #brer15] #146302 10/25/19 03:39 PM
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redninja Offline OP
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Originally Posted By: #brer15
Make sure the carb boot isn't leaking at the seal. One of the most common times for a leak there is right after it is installed


How can I check this ??


redninja
Re: New Mystery, New Thread [Re: redninja] #146303 10/25/19 05:51 PM
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peejman Offline
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Originally Posted By: redninja
Originally Posted By: #brer15
Make sure the carb boot isn't leaking at the seal. One of the most common times for a leak there is right after it is installed


How can I check this ??


Check for vacuum leaks....

1) Have a fire extinguisher handy.
2) Get a can of something aerosol and flammable... carb cleaner, brake cleaner, etc.
3) Cold bike, start the engine.
4) Squirt little shots of the aerosol on the joint between the intake boot and cylinder, intake boot and carb, both plastic side covers on the carb, and the diaphragm cap on top. Work your way around each joint a little at a time.

In between each squirt, pause for a couple seconds to listen. If there's a vacuum leak, the engine will rev up as the aerosol is extra fuel that gets pulled in through the leak. If/when it does rev up, the idle may or may not come back down. If it doesn't come back down (called a hanging idle and indicative of a vacuum leak), you'll either have to blip the throttle or shut the bike off to get it to come back to normal.

Keep in mind that you're squirting a highly flammable substance on surfaces that are rapidly heating up. It has potential to get exciting really fast. See #1 as necessary. wink



This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.
Re: New Mystery, New Thread [Re: redninja] #146308 10/26/19 03:54 AM
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redninja Offline OP
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Thanks for that info, peejman. Ha ha, this is funny.....just today I was out by the motorcycles and spotted the can of starting fluid. I remembered reading something quite awhile ago about spraying volatile stuff on a running bike to check for vacuum leaks, but didn't remember all the details. Then, as I thought more about it, it seemed kinda dangerous, so I didn't do it. Perhaps is is time to throw caution to the wind......For sure I will wheel the bike out away from the other ones.....


redninja
Re: New Mystery, New Thread [Re: redninja] #146312 10/26/19 02:23 PM
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thinman Offline
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Another way to check for vacuum leaks is to spray a less flamable substance, such as WD40, on suspected leak locations and listen for a drop in engine speed.

Last edited by thinman; 10/26/19 02:24 PM.

Spaling errors and typos have been included on porpoise for those who enjoy finding them.
Re: New Mystery, New Thread [Re: redninja] #146319 10/27/19 12:33 AM
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peejman Offline
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It's really not that bad unless you get distracted with something unrelated for a minute or two and then spray the stuff directly on the exhaust. Not that I'd know anything about that.... It burns out before you can get to the extinguisher anyway. smile


This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.
Re: New Mystery, New Thread [Re: redninja] #146325 10/27/19 07:24 PM
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thinman Offline
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The problem with using carb or brake cleaners is that those substances can cause damage to rubber and plastic components.


Spaling errors and typos have been included on porpoise for those who enjoy finding them.
Re: New Mystery, New Thread [Re: redninja] #146327 10/28/19 03:06 PM
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I've had pretty good luck with Berryman B-12 carb cleaner. I try to keep it on the metal parts only.


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Re: New Mystery, New Thread [Re: Muniac] #146331 10/28/19 03:40 PM
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Berryman B-12 carb cleaner is good stuff. Works well. Always have it on hand in the shop. Haven't had problems with it on non-metal parts, but don't typically spray them..


..I'd rather have questions I can't answer, than answers I can't question.. Dr. Phil
Re: New Mystery, New Thread [Re: redninja] #146355 11/01/19 10:30 PM
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thinman Offline
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Another way to check for vacuum leaks: https://www.youtube.com/watch?v=BAPy3C9r2zs

The test starts at around the 4 minute mark.


Spaling errors and typos have been included on porpoise for those who enjoy finding them.
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