azopelnut

I bought an Opel GT in 2000 that has a Mazda 12A engine. It has not been started since I bought it. What procedures do you recommend when trying to start a rotary engine that has not been turned over in 5 years? I live in the desert which is dry and the car has been stored inside a garage the entire time.

I also have a 12A that i bought as a spare. Is there a way to tell if the ngine is any good without putting it in a car?

TeemSlo

Here you go https://www.rx7club.com/showthread.p...ht=carbon+lock
That's a good thread that will tell you about starting a engine that has been sitting for awhile

Dan_s_young

iTrader: (1)

First of all this has been covered multiple times but since your new ill help the best I can.

I would first pour a small amount of MMO (marvel mystery oil) in the leading spark plug holes and turn the engine over by hand a few times to spread it all over the inside of the engine. I would then take a light and shine it inside the spark plug holes (or exhaust ports) and visually inspect that the apex seals are intact. When turning the engine over by hand you should be able to hear when the compression is released from the trailing plug hole.

If the compression hissing is strong and you can hear 1 hiss for each rotor per revolution of the engine... Anyways if the seals are still there and you have good compression (let the MMO sit in the engine overnight to do its magic its good stuff) the engine should work...

FB II

throw some dynamite in a spark plug hole YAYYYYYY.

Jeff20B

iTrader: (13)

Dribble a little oil down the intake and/or spark plug holes and then crank the engine clockwise by hand on the 19mm bolt on the front pulley. If it won't go all the way around with moderate torque applied with one hand on a typical 3/8" drive ratchet, it's got a problem.

Kentetsu

What worked for me; dump a couple ounces of MMO down the carb while cranking, then let is sit for a couple of days. Clean the spark plugs, then start her up. Good luck. DON'T USE ATF as you may find suggested in various threads!

aspirao

pour some oil down the carb make sure you have oil,&fuel press,and a good set of plugs .don't be alarmed by the smoke there will be plenty of it