I have a 87 accord replaced the fuel pump, main relay and it still will not start from time to time,I have to wait 1/2 hr before it will start again

 

Please read the rules/sticky in each section.....do not post in the DIY section. Things like this belong in General Tech.

I've moved this one.

I'll assume this is an LXi model - Fuel Injected? When it won't start, need to see what is missing. Can of carb cleaner, spary a bit into the tb - open the butterfly - and try to start....does it run for a few seconds?

Next would be to check for spark, several different ways to do this.

Last - welcome to HAF