Search found 3 matches

by danimal72
Sun Oct 23, 2016 4:05 pm
Forum: Start Your Engines - Introduce Yourself
Topic: 1980 xs400 special loss of power
Replies: 5
Views: 7082

Re: 1980 xs400 special loss of power

I should mention that when I do get around 55 I can't hear the exhaust at all on the right side and it kind of sputters randomly, almost like it wants to fire but doesn't. I don't know if there is something other than the coil pack that could be providing the signal to spark. I checked the timing an...
by danimal72
Sun Oct 23, 2016 4:02 pm
Forum: Start Your Engines - Introduce Yourself
Topic: 1980 xs400 special loss of power
Replies: 5
Views: 7082

Re: 1980 xs400 special loss of power

Thsnk you for the quick reply! The plugs are gapped at the recommended .060 and I replaced the wires with silicon wires that are brand new. I even replaces the plug caps (the piece that goes on the sparkplug, not sure the technical term) and the problem was present before I changed the plugs and wir...
by danimal72
Sun Oct 23, 2016 6:28 am
Forum: Start Your Engines - Introduce Yourself
Topic: 1980 xs400 special loss of power
Replies: 5
Views: 7082

1980 xs400 special loss of power

I'm really hoping you guys can help me out. I got a 1980 Yamaha xs400 special this summer off a buddy who had it sitting for 6 years in a barn. I changed plugs, wires, new gas, fuel filter, fuel lines, and took off the mufflers because I didn't know if they would be clogged. I drove it and it respon...