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
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Reed Valve 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="ALOHA, post: 1371878, member: 111206"] [b]Bad Reed ???[/b] The bike is a 1981 YZ465 Yamaha The top end was just redone. All new gaskets installed and torqued to spec Compression test was 150 psi Carb gone through all passages cleaned New air filter New crank seals both sides No cracks or leaks on manifold Exhaust pipe sealed with high temp silicone Right after re-assembly it started right up 3 rd kick. Low end and mid range power good. Top end blubbers and 4 strokes. Rode sunday and it ran good as long a did not go over a little over 1/2 to 3/4 throttle. Shut bike down after riding for an hour to push my granson up a hill. Went to start the bike and it took at least 20 kicks without a pop then it started all of the sudden. Started in the garage monday and it took again 15 to 20 kicks with an occasional backfire out the exhaust. When it was running that is when I notice that it sounded like it was having air come back through the carb and out the rear. I took the reeds out and noticed that none of the pedals were touching the reed block. I reversed the pedals and re-installed. There was no difference. It took 15 kicks to start and would not clean out on top end. I have reduced the main to a 370 main from a 380 with no change. The reason I asked is that I have heard that bad reed pedals can cause hard starting and other problems. Is blubbering on the top end one of them? Thanks for the input. Thanks Jack [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Reed Valve 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