Hi guys need help I recently rebuild my engine d16a6 and put p29 pistons .40 milled head it has gas regulator, header 4-2-1 d16y8 head gasket stock ecu pm6 all new cold spark plugs everything and it fires but its very very rich in all cilinders and its stalls about 30 seconds i pull out all spark plugs and they are all wet it doesnt have the check engine ligth on but when I disconnect a sensor it turns on but when a try to check the ecu code it doesnt blink just stays on help guys please I need the car is a civic hacthback 90 SI because my daily drive car got stolen

 

Solid light on the ECU, assuming it's OBD0 means the ECU is no good. Have you tried removing the hazard fuse and trying to pull any codes then?

I don't think you will be able to run the car with a stock ECU, p29 pistons + .40 milled head, thats adding ~2 points of compression to your motor. You are looking at ~12.5:1 compression. This part is just as an FYI

What plugs are you running?