No spark at plugs. Has power to coil - 1987 Honda Civic

Here is a diagram showing the spark plug leads attached to a coil pack:

Ignition coil
Spark plug lead
Spark plug
In this diagram, the ignition coil is at the center and is connected to the spark plug leads, which are in turn connected to the spark plugs. The spark plugs are located at the end of each spark plug lead and are responsible for igniting the fuel in the engine's cylinders.

In a typical engine, there will be one ignition coil for each cylinder, and the spark plugs will be connected to the ignition coils through the spark plug leads. The ignition coil generates a high voltage electrical current, which is transmitted through the spark plug leads to the spark plugs. The spark plugs then use this electrical current to create a spark, which ignites the fuel in the engine's cylinders and powers the vehicle.

The spark plugs that are not sparking will be the most likely reason for the loss of power. You will need to find out why they are not sparking.
Start from the spark plugs. Check the condition and age of the spark plugs. If in doubt replace them all. Do the same for the plug leads attached to the plugs. Next you will have to check the igniton coils. On you vehicle i think the plug leads and ignition coils are all one piece. Get a good mechanic or an auto electrician to test the coils to make sure they are working correctly..

Look more closely at the 1 and 4 coil, also, check for trigger signal to these coils. I mostly suspect the trigger unit.

Do you have power to the + side of the coil, and will the coil fire when you remove the ground connection ?

The PCM doesn't supply power to the coil's ,it supply's a ground . A fuse supply's B+ power to the coil's . Your vehicle has what is called coil on plug ignition system , a coil for each cylinder . Should have plug wires ,has a spark plug boot . IT is common for these coil on plug system's to fry the driver (transistor) inside the PCM ,if the spark plug gap becomes so worn that the spark can not jump said gap. It shorts inside the coil sending high voltage to the PCM driver . There are video's on youtube showing how to test a PCM driver circuit . Your coil has two wires , one should have B+ voltage an the other goes to the PCM . If your coil fried i look for a short to ground on the control side circuit . This video is for a ford 5.4 l V-8 coil on plug system ,same thing just 2 more coils .
Ford 5 4 shorted coil primary winding and bad computer driver

ignition will trigger if signal from crank sensor, with hei spark plug tester ,read to coil wire and spark plugs wire if spark , depends wich engine
if c3i coil and module the module could be the problems you can check it before replace
hope it helps

Check to see if the spark is strong with a spark tester if it is replace the spark plug wires

The spark gets power to spark from coil packs.If the connection between coil pack to spark plug is weak or loose then it will not fire.But if the coil pack as well as the connection between coil pack to spark plugs checked ok then its faulty or dirty spark plugs.Clean the spark plugs with the carb cleaner liquid and let it completely dry.Then check.Also check the voltage between coil pack to spark plugs.If both checked out ok then the other possibility can be weak crank shaft sensor. Thanks.Helpmech.

The spark plugs receives power to spark from coil pack.Check the power at the coil pack and also check the voltage at the coil pack with meter.If the coil pack shows proper power as well as voltage then its fault in spark plugs.Otherwise its faulty coil pack.The coil pack receives power from battery.so also check the voltage of the battery it should be exact 12 volt.
If the battery shows low voltage then the battery needs to be re-charged.
Then check out.
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did you replace the coil wire?
and distrubtorcap and rotor?