I've heard that running out of gaz with a rotary is really bad, I've also heard people being proud of never having their fuel gauge indicating less than a quarter tank... Why is it so bad to run out of fuel with a rotary?

Alex

 

It's not bad to run out of gas in a rotary. Why would people put fuel cut switches in then. Low tank would probably mean that you would pick up the sludge on the bottom of a low tank that has never been cleaned after 15 or so years.

 

Because you have some dirt floating in your fuel tank which is collecting from fill to fill over months and if it gots empty all the dirt you have there goes through fuel filters which is clogging them and there's a probability that some dirt will stuck in fuel injectors which is absolutely no good or will get into the combustion chamber... Well i think you got the point...

 

Unless you're letting your car sit for months at a time, you'd never have 'sludge' or anything at the bottom of your tank.

 

Really, I had a fuel problem and ended up replacing the sock on the pump because it was clogged. I drive mine every day so it didn't sit for months on end.

 

Thanks guys. So it's not another "rotary precaution", it's the same with all the engines. It's only to prevent dirt to access the combustion chamber. That makes sense.

Tanks for the answers
Alex!

 

Well, for a turbo rotary some say it's so you don't gulp any air during sloshing when fuel levels are low. Big air gulp + turbo = POP. NA's won't have this problem. However for both cars the gasoline also cools the fuel pump. Running very low may overheat the pump.

 

yeah, the pump itself sits in the botom of the tank, thus being cooled by the gasoline. running it dry wont kill your engine, it will just kill your pump after a while.

 

you're absolutely right mate... I just forgot to mention that...