Car will not start when warm
 

Hey there. I'm a Subaru guy, but my good friend has a mean RX-7 which he needs some help getting working better. For some reason he doesn't seem to want to look for a forum, which I just found this, for help. So, I'll ask you guys instead. Maybe I'll look smart too. ;)

Anyway, its a 1988 RX-7 single turbo, which he bought as a dead car, shipped in an engine from Japan and replaced it himself, and it was working pretty good for awhile. Then, recently his flywheel flew off its bearing for no apparant reason, he dropped the tranny and probably fixed it, putting the thousand or so pounds of torque required and he red loctited it on. He did that originally, but without the loctite.

Next, he's had this problem since he rebuilt it. Whenever the car is hot from driving it and he shuts it off, he can't start it up again until the car cools. So sometimes he's left sitting around in places until the car cools down. Recently he was tipped off that if he started it much like one would with a dead battery, it starts.

He can't pass emissions yet with it either, I'll ask him if its exhaust gases related or otherwise and ask some more questions when I find out.

Thanks guys.

You'd probably have better luck posting this in the 2nd generation forum.

But, to me, it sounds like he is having either a low compression issue, or the classic 2nd GenRX7 drippy injector syndrome.

If it is a low compression problem, a dose of ATF may do the trick. Search on "ATF trick" and you will no doubtedly find it.

If it is the drippy injector/hot start problem, many people have their fixes, but the cheapest is a kill switch for the fuel pump. When he shuts the car off, the fuel line still has pressure in it and is causing the injectors to drop unnecessarily into the fuel rail. A kill switch to the power of the fuel pump may fix this (again, search the 2nd gen forum) and it also acts as a nifty antitheft device :D