I've got a 1978 Rally Sport no mods, all stock. The thing hasn't gone more than around the block in years. I could get it to start last week but had little power and wouldn't idle.
Swapped in a new rubber clutch and cleaned the carb last week. Put it all back together today and kicked it until it started. This is where I am getting confused.
Once it starts it revs like I have the throttle is wide open, but i don't. Then after about 4 very intense seconds it dies. 5 more kicks it starts up and sings like a bat out of hell then dies.
I tried doing spray test but its hard to tell since it will only continuously run for 4-10 seconds. When I did spray it, i didn't notice any "instant kills". What would cause it to rev SUPER high then die?