Hard Starting

When I Check Voltages At Ballast With Just Key On I Have 12 Volt For A Few Seconds Then It Starts To Drop. Butwhen I Start Cranking The Motor It Jumps To Between 10 And 11.5 Volts. On The Out Put Side.the Input Side Has Constant 12 Volts. I Beleive This Is How It Should Work. But Will Barely Start. When I Put Jumper Wire On It Fires Right Away. Very Frusturating.(i Cant Run A Jumper All The Time To Start My Car) HAVE LOW VOLTAGE AT COIL UNTIL I USE JUMPER. THEN HAVE BETWEEN 10 AND 11 VOLTS. HAS BEEN LIKE THIS FOR A WHILE HAVENT CHANGED ANYTHING. GETTING PLENTY OF FRESH GAS (NOT OLD). :banghead: :banghead: