"After about an hour of runnin
"After about an hour of running, my '87 260 starts to surge and bog. I have access to a scope, and during the surges the kv jumps to over 30 and sometimes extra voltage lines appear between the normal patterns. It is a Thunderbolt ignition. Fuel pressure is around 6 psi. New filters and seperators. Newer wires plugs cap and rotor. Any ideas. Thanks. PeterD"
"After about an hour of running, my '87 260 starts to surge and bog. I have access to a scope, and during the surges the kv jumps to over 30 and sometimes extra voltage lines appear between the normal patterns. It is a Thunderbolt ignition. Fuel pressure is around 6 psi. New filters and seperators. Newer wires plugs cap and rotor. Any ideas. Thanks. PeterD"