A friend's brother bought a RX 7 that starts cold but does not start hot. He has looked into an engine from Mazda Canada. They will not sell parts. I have requested he call me. I think if it starts cold the engine should be sound and he should get a compression test done. I am thinking an ignition sensor, coil or HT wire issue. I will get him to sign up here. Any ideas? It is possibly a FC model.
Dale Davies

That's weird. What year is it?  Sounds like a second jen. I forgot what
an FC is.

Is it EFI?

The temperature sensor in the block signals the computer to richen
the mixture for starting.

Now I am not sure how it fails. The question is... does it fail to cold
or fail to hot ?  It could have flooded the hot engine.

I was in a court case where supposedly a sensor failed and caused the GM engine
to over rev on start up (idle). The women selected reverse in a parking
lot and the car accelerated  and  killed someone behind her.
That would be a case where the engine was hot but the sensor failed
to cold and gave it too much gas.

Perry Mick flies with a stock EFI. We talked about using that sensor
signal to control the mixture in flight.

That is a classic example of you don't know what is going in a proprietary
EFI. It is all a top secrete. Nobody publishes the source code. Do your
own with a Maximite.

Paul Lamar

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