O.K. This is weird...I have a 91 civic DX 1.5 For some reason when I try to start my car when it's hot outside it just cranks and cranks and evetually it will give up and start. This also happens if you kill it before it idles down. The only engine mods I have is a MSD Blaster with the cap, and and a solid resistance on my IAT. I'm pretty sure these mods don't have any effect on this problem because it did it last summer before any mods. I thought I had gotten rid of the problem but I guess not. Any help would be much appreciated.

 

O.K. I just found the answer for Timlabute and think I may have found my own problem. I'm getting a fuel injector code. At first I was just going to replace them all until I priced them. So know my question is how do I find out which injector is faulty?