Sometimes my 90 Accord lx won't start,It cranks good but just don't fire.I know it's not a spark isue,because if I spray strarting fluid in the breather,it will start.Like I said,it starts most of the time,but sometimes it won't start,HELP.

 

Have you checked the main relay for cracked solder joints?

 

Main relay. Especially if this happens mostly when the interior of the car is hot.

 

Where's the main relay located?