A MDS like many other engines will start backwards. Mostly they will not run a high RPM and will either stop or reverse direction if the throttle is opened.

Because the MDS engine line was aimed at the European mkt where low nitro fuels are the norm they have a higher compression ratio than is normal for the US mkt.

If you have a head shim try fitting that. Try no nitro or 5% fuel and a cooler plug. </p>

O YES if you get post telling you to use it as a door stop don't, The 218 is a great engine.</p>

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