Question: how do i know if i need to replace my distributor?
Answer: Check the Distributer Cap. Often the distributor cap is suspect. ... 
Check the Contact Points. Inspect the condenser; the engine will not function if it is broken. ... 
Check the Arc. ... 
Tools and Materials.
Crank the Engine. ... 
Remove the Old Distributor. ... 
Set the Point Gap. ... 
Set the Distributor.