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Rotary engines are actually really reliable and could be as reliable and more reliable than piston engines if taken care of correctly. The reason people have the thought that rotary engines are bad at breaking are mainly because there are a lot of rotary owners that mistreat their engine. If pistons engined were frequently 1k+ past redline consistently like rotary engines are forced to do, they would break often easily as well.

N/A Carbureted Rotary Engines are the most reliable followed by N/A Fuel Injected Engines. Fuel Injected Turbo Engines are least reliable.

Most N/A Fuel injected Rotary engines last 150k-200k+ when taken care of, Turbo Fuel Injected engines last 125-175k average.

I've seen Rotary engines with over 250k original miles. The most important part is taking care of the engine. It's more vital to keep a rotary well maintained as opposed to a piston engine because piston engines actually still run when they're mistreated.

Here are some tips to help improve engine life and STOP flooding from happening and getting it started if it does.

Ok first of all drain and change the oil every 3000 miles NO MATTER WHAT!!! you also have to check the oil every 2-3 fill ups on gas if its low fill it up with mineral oil NOT SYNTHETIC. That will cause flooding if synthetic is put in. Also you have to run the engine hard so every week run it to redline at least once maybe more if your driving it a lot. If your starting it in the cold make sure to let it warm up 10-15 minutes otherwise that will cause flooding too.

How to start the car if flooding occurs. Make sure you have a battery charger in hand cause this will cause your battery to drain. Okay so get in your car with the vehicle still off then MASH the gas and then attempt to turn it over (Hold for 10-15 seconds) MAY TAKE A COUPLE TRIES if it does then congrats but don't turn it off, go for a speed drive with it running at redline and then you can go home. If your vehicle didn't turn over then try again if it doesn't work that time then try turning it over without the gas mashed not even in at all. if it doesn't work that time walk a way and come back later. At last resort take it to the dealer to have them fix it. Oh yeah one more thing don't drive your car out of the garage and then turn it off in your drive way immediately that will cause flooding you have to allow the car to reach running temps otherwise it will cause flooding so NEVER turn it on then back off immediately. Good luck with your car after these Tips.

Shutting off a cold rotary can cause carbon lock. Which is a chunk of carbon breaking loose and finding a place to wedge itself and "lock" the rotor up. If you leave the car running, pieces of carbon get broken up and burnt. The synthetic oil theory hasn't been proven yet. I'm running synthetic right now to test it and am having no problems. Theory states the the additives in synthetic can build up in the combustion chamber. I'm unaware if flooding can be a result of synthetic.

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โˆ™ 2011-10-09 05:05:08
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