99wr400f engine lock-up
Posted May 04, 2006 - 06:27 AM
Posted May 05, 2006 - 01:24 PM
My guess is that it has something to do with the piston..
Easy fix, not so expensive either.. Cost a little if the cylinder has to be changed out though..
Pull it to pieces, to inspect..
Posted May 05, 2006 - 08:38 PM
Posted May 06, 2006 - 02:57 AM
you may notice there is two almost identical posts regarding 400's locking up.
hope this isnt a trend developing.
Posted May 07, 2006 - 09:11 AM
Posted May 07, 2006 - 10:50 AM
To inspect the valve sealing, the camshafts dont have to be mounted
Posted May 07, 2006 - 03:15 PM
I hope yours isn't that bad.
You still have movement so that is a good sign.
Posted May 07, 2006 - 03:40 PM
Posted May 09, 2006 - 08:28 AM
Posted May 09, 2006 - 10:09 AM
note, that con rod connects to cranckshaft, not camshaft.
Posted May 09, 2006 - 10:15 AM
My small end bearing in the rod was the problem in my bike (no not similar problem, but sort of interesting for you to know?)
I checked up the rod and rod bearing prices, and cost of work to take apart the crank to change the rod, and calibrate the crank again.. I ended up changing the complete crank.. The crank costs around 300$.. Plus another 60 or so for the main bearings since you already are splitting...
The rod should probably be changed out anyway since you had serious problems there.. And its easyer to just change out the complete crank, than sending it to a workshop with a bag of parts along with it.. Who knows, perhaps the guy that`s going to do the work (pressing, calibrating etc) was up late last night, drinking
To look for parts costs, take a look here:
Posted May 14, 2006 - 01:48 PM
Did it still run after this happened? Sounds exactly like what happens to my bike at least once every ride-it stalls and locks solid, have to put all my weight on the starter and wait for the pressure to gradually decrease, then I can kick her over as per normal and she runs fine. Kinda had me scared at first but its been doing it for over a year now with no ill effects-Im guessing its some wierd compression lock or something?
not using ur decompression lever? or else theres a problem with the decompression mechanism on your bike.