Ok....now i just put a short block from mazda and the car started alright.....the first ...after we put the fuel lines in the right spot.....now i changed the fuel filter next day and after that the car would not start....so i checked the fuel pressure..then unplugged the fuel line and checked to see if the pump was pumping...then checked only one spark plug and there is good fire...WHat else should i check for ? the car is not startin...i got fuel and fire.... crank sensor ?
plz help asap!

 

By the way it is a 94 rx7

 

maybe your injectors aren't getting signal to fire....having same problem with mine...good luck finding an answer...

 

A TECH TOLD ME TO PUT SOME OIL WHERE THE SPARK PLUGS GO AND BOLT THEM AND TRY THEN...I MIGHT HAVE NO COMPRESSION...OR lUBRIFICATION ENOUGH