Into the Darkness
Join Date: Oct 2010
Location: Mount Olive, IL
Valves Has Quit Moving
Well I was on my 45 mile trip to class to take my final exam. I get about 7 miles from the exit and my bike just all of a sudden loses power and starts to bog. I kept going those last 7 miles to get to the school and called for a friend to come rescue me and my bike. This happens Monday evening, and Tuesday afternoon I start to mess with the bike. I was thinking that maybe there was a problem with the carbs so I took them of, tore them apart, and realized the diaphragms were still in good condition. Well I then put the carbs back on the bike and tried to fire it up again, and there was nothing. Then I decided to check for spark, and the spark was consistent and strong on all 4 plugs. I was trying to figure out what the problem was at this point in time so I decided that maybe it just isn't getting fuel. Pulled the tank off the bike and with the vacuum line on the petcock I created a vacuum on it, and well fuel flowed without a problem. I then decided to pull the carbs again and looked in the hole on the cylinder (rear) and crank the motor. Well both valves moved up and down with no problem at all. I then did the same thing to the front cylinder, and you guessed it correctly NO MOVEMENT AT ALL.
Before I decide to tear into the motor to try to figure out that the problem is here I'm needing some ideas on what could cause my valves not to move at all. They are in the down position. I want the ideas basically so I can price parts out to see how much it is going to cost and all to do the repairs. That and it's going to be a couple months till I get the money to do these repairs so it will give me time to research all options that y'all give me on what the problem could be.
Now I did forget to mention that I did remove the plugs 1 at a time and did a compression test. All 4 plug holes have compression so I know we are good to go there.