Coil produces spark but no spark at plug wires. New cap and rotor.
Dist may be turned way out of time. Check to see if rotor points to #1 wire when #1 piston is tdc on compression stroke.
SOURCE: 70 plymouth Cuda 383 eng
Check the ballast resistor (white ceramic block about 2 in long on the firewall, they are about $2. (You may be depressed you spent the $$ on a tune-up for a $2 part if it solvs the problem, but hey, it needed a tune up anyway.) There are two types of resistors so pay attention to what it looks like & how many wires. It controls the spark when the engine heats up and is in the coil circuit. You don't say, but make sure the rotor turns when you crank it over. The B-block is a very tough engine but if the cam or the distributor drive gear are broken might cause the symptom as well.
SOURCE: Just changed distributor cap and rotor, plugs and
check the gaps on plugs also distributor also condensor in distributor
SOURCE: im not getting spark new coil, new cap and rotor,
If you still have a no spark condition, Check the magnetic pick-up in the distributor. Use an ohmmeter, attach the leads to the two wire prong. Should read between 500-1000 ohms. If this reads infinity or very high resistance, replace the magnetic pick-up. Make sure also you have current on the positive side of the coil. Also, Check the coil wire from the distributor to the coil. Use the ohmmeter. if the wire reads infinity, replace the coil wire. these two conditions will give you a no-spark condition.
SOURCE: No Start Troubleshooting 1992 buick road master
Changing the ignition might have interrupted the antitheft security system on your vehicle. (VATS) If you see a light on the dash that says SECURITY, this is a good indicator of this problem. This link explains the problem and offers solutions.
http://vatspasslockpasskeysecurityhelp.yolasite.com/
What size engine?
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