Compression test
 

When everyone talks about compression test before buying the car, what is exactly everyone mean? This Mazda dealership told me you can't perform compression test on the Rotary Engine. I don't want sound like idiot. Thanks in advance.

they are full of it. the difference is you have 3 pulses per rotor. mazda has a special tester for this or you can modify a normal tester be removing the pin. never let them touch your car. find a competent rotary shop. to have one do it will run you roughly $115, thus why many use the modified normal tester. a good idea was to record the readings as the motor cranked ovr with a vid camera so that it can be played back in slow mo as the readings are pretty quick.

Thanks.