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Ivan, ASE Certified Master Technician
Category: Chevy
Satisfied Customers: 4871
Experience:  ASE Master Tech. 20+ years experience. 9 years self employed. Expert on AUTOLAB Radio Show
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1987 chevy: new plugs,wires,cap,coil and rotor..module

Resolved Question:

1987 chevy pu 305 no spark. new plugs,wires,cap,coil and rotor. Ign module ck and is okay. why no spark yet?
Submitted: 7 years ago.
Category: Chevy
Expert:  Ivan replied 7 years ago.

HelloCustomer since you replaced everything except one item, it's time to check that last remaining component. The pickup coil is located at the base of the distributor under the rotor. Remove the rotor and ignition module. Use a voltmeter set to AC voltage. Hook the leads across both terminals on the connector coming from the center of the distributor to the module. Place the leads so they don't get caught in the distributor. Crank the engine. The meter should show .3-.6 voltsAC. If you don't show any ACvoltage the pickup is faulty and that is why your module will not trigger the coil. Focus there and let me know what happens.


Your JA Expert,


Customer: replied 7 years ago.
How do you remove the pickup coil from the distributor shaft?
Expert:  Ivan replied 7 years ago.
You have to remove the distributor from the engine, remove the gear from the bottom of the distributor and the shaft will slide out the top. Then you can remove the pickup from the distributor. This is how you go about removing the distributor where you will be totally safe. Mark the rotor to the distributor. Mark the distributor to the intake manifold. As you lift the distributor, the rotor will rotate. When it stops, mark the distributor. Then when you are done, line the rotor with the last mark you made, as you insert the distributor the rotor will twist and line up with the first mark you made. Make sure you line the distributor up with the mark on the intake and if the other XXXXX XXXXXnes up, your timing is exactly where you started.
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