84 GMC 350 engine - no spark?

Dawn G

New Member
Attempted to start truck and it wouldn't start. It has no spark. Changed fuel filter, Ignition Coil, Pickup Coil, Control Module, Cap & rotor. Used test light & Checked for power at distributor and it has power. Voltage at Distributor. decreases when engine is cranked. Used lead wire from battery to Distributor. to ensure 12 volts. Still no spark. Motor is 2 years old and has only about 5000 miles on it.
 
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