I just bought a 92 honda accord and the guy said he was driving it and it died and when you try to start it no spark and the check engine light stays on I replaced coil and ignighter I thought it might be the main relay but don't know for sure if you can help let me know thank u

The starter or even the battery could be dead

No it cranks over just fine it just has no current from the coil pack I replaced the main relay and now the check engine light is off now but still don't start I also replaced the coil pack and ignighter

Perform the K-Test on the ECM. Sounds like the ECM is bad.

How do u perform a k test I put a paper clip in the clip to check the codes and the light wouldn't blink it just stayed on

The K-Test: Remove the MAP Sensor connector and turn the ignition switch to ON (not start). Using a multimeter, check for 5 volts going between the MAP Sensor connector's reference wire (+) and ground. As you look at the connector, this is the socket on the right. Really press the black test lead into a cleaned main ECM ground on the thermostat housing. If the voltage is low, it's probably indicating ECM failure. Most failed ECMs will record a fraction of a volt. To me, the K-Test is simple, elegant, and accurate.

I replaced the ecu and checked the ground under thermostat and replaced distributer still no spark

. Since you replaced the ECM, does the Check Engine Light now come on and go off normally, when the ignition switch is turned to ON (Position II)?

. Check all under-dash and under-hood fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563-3.html#post252145

If everything above checks out okay, and since you have replaced the ignitor, coil, and main relay, I'm left to suspect a problem with the distributor housing itself. One or more internal sensors (CKP, CYL, or TDC) may be damaged, which are unserviceable. Only use a genuine Honda distributor housing, since we have had many problems with even new aftermarket distributors on Hondas.

You it goes off till u do the paper clip thing then it stays on still no spark