cb900

Got a 1980 Cb900c and its making me go insane. Cylinders aren't firing at certain times. I've changed plugs, wires, coils, rebuilt the carbs, cleaned carbs, new hoses. Did a compression test today. cylinders 1-2 were about 140 psi and 3-4 were about 120 psi. The bike is getting spark and i have...

I am looking to buy a bike from a family friend. It's a 1980 Honda CB900 Custom. She bought it brand new in 1980 and babied it ever since. No scratches, no tears in the seat, the paint too is perfectly unfaded. This thing was pristine when it was parked three years ago. She has finally allowed...