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Are you having problems with the engine of your Mazda MX-5? Let our team of motoring experts keep you up to date with all of the latest Mazda MX-5 engine issues & faults. We have answered all of the most frequently asked questions relating to problems with the Mazda MX-5 engine.
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For road use I'd be happy with the 1.5 but, since you're going to be hitting racetracks, I'd definitely get the "big banger" 2-litre engine as it will be more rewarding to drive in those conditions.
ANOTHER possible cause of the problem. One worth checking.
GOOD information. It's possible you are correct.
INTERMITTENT problems are always hard to track down, but I doubt it's the plugs or leads. I would be looking at the engine sensors and making sure they are working correctly. I would look closely at the crank angle sensor. That can cause a problem like the one you describe.