Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
help i got problems
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="rmc_olderthandirt, post: 1142022, member: 68872"] The water out the overflow is a result of the blown head gasket. High pressure from the cylinder leaks into the water system, increasing its pressure until the cap vents. Very common symptom. It is possible that the head was never torqued down properly and that the gasket leaked as a result. You need to have a torque wrench and the specifications from a repair manual to get the proper torque settings. Tightening down in the proper pattern, and a little bit at a time is also essential. It is also a very good idea to re-torque the head after a short run. Start the bike, get it up to temperature but don't push it too hard. Run it for a few minutes, let it cool a bit, then check the torque settings again. You might want to check the settings again after the first full day of use. If it fails again then there is definately something else wrong. Like reesknight said, a warped head could do that. It is also possible that the wrong piston was installed and the compression is too high. On the Yamaha, something is interfering with gas getting to the carburetor. When the tank is full the pressure of the gas will be about double what it is with an empty tank. If there is an obstruction, such as a kinked fuel line or clogged filter, the greater pressure would be able to force more gas through. Try taking the fuel line off at the carburetor and opening the gas valve. A good steady stream of gas should flow. If it dribbles out instead, check for an obstruction in the fuel line, the shut off valve, or in the tank itself. Try blowing air back into the tank, then clean the tank out (to remove any gunk that was just blown in). If gas flows through the line okay then the problem is probably in the carburetor, probably in the float needle valve. You can try removing the carburetor, splitting the case (top from bottom), removing the float, then the needle then the seat. If there is any gunk around the needle clean it off. Blow through the gas inlet to push out any gunk in the lines (it should blow very easily with the needle seat removed.) [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
help i got problems
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom