So guys here is my issue i just rebuilt the whole motor the seals were bad. Put it back in and it cranks perfectly fine. Has fuel also spark and can hear a beating sound as it is pushing air out the exhaust. Pretty sure it has compression put new crankshaft postions sensor in and it still seems like it doesnt want to fire. We have tried to jack rabbit it and it sounds really good as if it running but it probably just sounds like it is. Have already put oil in to the housing to help the apex seals and still not starting. The car didnt run when i bought it so I decided to rebuild it.

 

Did you reset the ESS?

It makes it more difficult to diagnose if you don't know why it didn't run before

Do you have injector pulses?

Spark is easier to tell.....

Compression test at some point to rule it out

Gotta start someplace and systematically check everything

 

Starting the Engine
• Starter
• Battery
• Engine Compression
• Grounding Wires
• Ignition Coils
• Spark Plugs
• Spark Plug Wires
• Fuel Pump
• Fuel Injectors

https://www.rx8club.com/series-i-tro...t-here-222584/ more detailed info here