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
Honda MX & Off-Road Dirt Bikes
CR80 coolant in exhaust - new head gasket
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="bigboss_an, post: 1407587, member: 63808"] Hello Everyone, I have been working on my kids' bike (2000 CR80) for a while now and can't find a solution so your help is needed. Even after sanding down cylinder head and top of cylinder on a mirror with 800 and then 1000 sandpaper and installing three new head gaskets (with correct torque on cylinder and head) I still get coolant in the exhaust and excessive pressure in radiator. Bike is also very hard to start. It will only start when pushed down a hill and jump starting it. When it finally starts it runs terrible, especially at higher RPM's. Is it possible for coolant to leak into the exhaust by means of a (hairline) crack in the head or the cylinder? I'm now considering new studs and a fourth set of gaskets, but maybe I should be looking at the head or cylinder for leaks? I know that the older CR's are very finnicky with head gaskets, but I can't believe the problem is a leaking head gasket anymore. Is the coolant being forced into the exhaust because of exhaust gases leaking into the cooling system (which makes no sense, I know) or is it being forced out by the temperature and pressure in the cooling system itself? I must say that this happens before the engine even warms up so I can't believe it's an overheating issue either. BTW; Crankcase oil is perfectly clean. My son is desperate so your help is really appreciated. Thanks. 'Confused' Marc [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
CR80 coolant in exhaust - new head gasket
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