I need help fixing my 1983 RX-7 with a 12A engine and a 4 barrel carburetor. When the engine is hot, and we shut off the ignition, when we try to start it again, but it will not start back up. If there's anyone familiar with this problem your advice will be greatly appreciated.

 

poor compression, at least thats what was wrong with mine. Mine would not start untill it cooled down. A little ATF down the carb sometimes restores a little compression, enough to get it going BUT not a fix. Might want to get a compression test done.

 

If you made the mistake I did, and are using gas with ethanol in it, it could be vapor-locking. Due to their design, rotaries (with the exception of high-boost turbos) like to run on the lowest octane gas you can give them. I personally run 87 octane.

 

high boost run on low octane where did you hear that?

 

Read it again... he said RX-7's like low octane "with the exception of high-boost turbos"

 

My wife's 95 base model had that problem too. Turns out the carb was clogged and dirty as hell....