1990 Integra - My integra ran fine at lunch and then when I went to leave in the evening, it would not start. The engine cranks but will not fire. I don't know if I'm getting spark, but the distributor is only four months old. I have't heard the fuel pump. Any Suggestions?

To further address this problem. The ambient ouside temperature was 102F. When I tried to start the car on the next day it started right up.

Diagnosis: It's probably the Main Relay Assy.