I have a 1987 RX-7 non turbo that starts fine when it is cold. However, after running it and letting it sit there about 30 minutes, it will not start unless it is pulled or pushed and then popping the clutch. When it completely cools down (usually after sitting all night), it will start quite easily. Any suggestions?

davidd.10

 

I've read that this can be caused by leaking injectors. You might try searching for that. Good luck.

 

I assume you mean that the engine will crank but not start? Do you get any smoke from the tailpipes when you finally get the warm engine started? I would suggest that you have a proper compression test done on the engine. Problem may be related to low engine compression.

 

Very possible it is leaky injectors though. Check them out. If they are leaking then they could be leaking a small amound of fuel before the fuel pressure bleeds off and causing a slight flooding issue. Its not enough flooding to wash away the oil film and cause you to loose compression (where you would need the oil or ATF flooding solution to regain compression) but just enough to foul out the plugs a bit until all the gas evaporates. This explains why you can restart it the next morning.
There are two solutions if it is the injectors. The first is to do the right thing and send them out to be rebuilt/cleaned.
The second is a workaround solution that won't fix the problem but will let you restart your car sooner than overnight. Search flooding in the forum and you'll come across directions on how to hook up a kill switch for your fuel pump (I think its the fuel pump, might be the power to the injectors, maybe someone more knowledgeable can correct me if I'm wrong). You'll flip the switch before shutting off the car and let it stall out from lack of fuel pressure rather than turning off the ignition. This will make sure there is no fuel pressure left to bleed throught the injectors when you shut the car off.
If the car is a daily driver then the second solution might be more appealing, if its a toy you can do without for a week or two I would have the injectors rebuilt.