yamaha wr 400 help for newbie
Posted October 19, 2012 - 06:05 AM
right the bike
its a 1998 yamaha wr 400 with 10,000 miles on the clock. it was spitting white oil so naturally i went straight for the head gasket and changed it, was no obvious marks on gasket or cylinder but hey better safe then sorry. then read this forum and probable reason was that pesky breather on the cam cover sucking water in when i was hitting deepish water.
bike seems to lack power, used to pop the front up in second easily but now just revs. naturally new clutch plates (both sets) were fitted with new springs (friction plates soaked 18 hours before) problem still there although clutch bite has moved far out. i dont no alot about these bikes as im pretty new to the off road scene and dont no if the carb could be to big a task for me to undertake as looks complex from what i have heard (had a gpz 500 before and cleaned, rebuilt and balanced them easily)
the bike is running the yz timing (1 tooth out) and an r & g pipe? has bog off the line and pops out the exhaust on deceloration.
any help would be very much apreciated as i love the bike to bits
thanks for reading, great forum and sorry for the spelling.
Posted October 20, 2012 - 10:43 PM
Popping on decel is usually lean idle circuit conditions , turn fuel screw out 1/2 a turn.
I am no expert so feel free to correct me
Posted October 21, 2012 - 03:29 AM