Hi legends, I have a 78 XS650, I was riding the XS for a while but it started white smoking from exhaust, and it is gradually getting hard to start the engine. I had backfire from carb and kick back badly.
So I decided to install new VM34 carb and rebore the cylinder with brand new 2nd over sized pistons, resize valves professionally, but the xs still does kickback and backfire and it doesn't start now.
My XS650 got Boyer ignition kit, brand new PMA system with capacitor, VM34 carb, and kick only.
I tried to use stock carb, installed battery instead of capacitor, but it still does same thing. I can see good sparks from spark plugs, they are both new spark plugs.
I tried advance and late timing, readjust the tappet clearance for valves as well.
I am very sad that she doesn't start, and I have been investing a lot of time and good money on it.
Please advice me.
So I decided to install new VM34 carb and rebore the cylinder with brand new 2nd over sized pistons, resize valves professionally, but the xs still does kickback and backfire and it doesn't start now.
My XS650 got Boyer ignition kit, brand new PMA system with capacitor, VM34 carb, and kick only.
I tried to use stock carb, installed battery instead of capacitor, but it still does same thing. I can see good sparks from spark plugs, they are both new spark plugs.
I tried advance and late timing, readjust the tappet clearance for valves as well.
I am very sad that she doesn't start, and I have been investing a lot of time and good money on it.
Please advice me.