Have a b17 in my 92 integra when the engine is cold the car starts and runs fine but after runnin the engine for a while i shut of the engine and let it sit for a couple of minutes the engine will not start again, it just cranks over but no starts, so i thought it was a coil heatin up and failin so i went out and purchased a MSD SCI ignition with a blaster 3 coil and the same problem, runs great but after shuttin the engine off, it wont start again till it cools down, i even went out and changed the ignition modual inside the distributor. any suggestions would be appreciated thanxs

 

Check your pgm-fi main relay. When you are having the problem, crack a fuel line and turn the key on (don't crank it), fuel should spew out. If not, your main relay is probably going out. You can open it up and resolder it (the solder joints crack), or you can replace it.

 

thank you very much for the suggestion i will try this today