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
Dirt Bike Brands - Other
Issues after rebuild
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="Rich Rohrich, post: 1282036, member: 16241"] Running new valves on old seats is a great way to hammer the new valves in short order. I don't think it's the cause of your current problem , but it will be a problem some where down the road. I still can't imagine why you would go through all this and leave an old sparkplug in the engine. When you troubleshoot any problem you look at what you know, and you always start with the basics. Fuel, spark,compression. So a sharp mechanic would : - put in a fresh plug - clean the electrical connections going from the stator to the CDI box, verify there is a good solid ground, and make sure all the connectors seat properly. - Clean and inspect the plug wire and the sparkplug boot while looking for cracks or other damage - Clean the pilot jet to make sure it isn't clogged or partially blocked. This is an incredibly common source of problems when bikes sit for extended periods. Even a small amount of old fuel in the float bowl can cause deposits that can restrict the tiny pilot jet orifice. - Verify the air jets in the mouth of the carb are clear of air filter oil and dirt. They get blocked easily. - [b]Carefully recheck the cam timing.[/b] Lots and lots and lots of mechanics far more experienced than you have inadvertently set the cam timing one tooth off. It happens far more often than you think. Once you can eliminate the majority of problems that come from the basics, then start looking for demons. The fact that it starts easily when hot but not cold would point to a fuel restriction (like the pilot jet). You need very little fuel to start a hot engine because there is always some liquid or partially evaporated fuel left behind in the intake tract. So even if the low speed circuit is restricted the bike will tend to start. When an engine is cold there is no old fuel left behind, and the fuel that does make it in is reluctant to vaporize, so you have to add more than would normally be required. Hence the use of the choke. If you take that fuel away it can be difficult (or impossible) to start. [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
Issues after rebuild
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