FC stuck seals or springs - lost compression - from sitting in storage?
 

Has anyone experienced stuck seals or springs from just sitting over time? Here's the short of it....

90 FC Turbo Engine
Kept in garage in GA
Haven't driven car in 6 years
I cranked to circulate fluids first 3 years
3 years ago, the engine still idled great
I travelled a lot and let go the routine cranking
Car sat for 3 years without cranking

Now.. the rear rotor shows zero compression. The front rotor shows one good pulse. Have tried several tricks to crank the car and loosen the seals. It acts like blown motor, but it's just been sitting in my garage and previously ran great.

Any similar experiences out there?

probably just carbon buildup. get some marvel mystery oil(MMO). pull the top plugs and get some of it in there as u turn the engine then let it sit over night. when it does start it's going to smoke like a freight train. do a search for it and see what u come up with. i've never used it myself but have read bout it. i've use ATF in the past.

Status update
 

That was the first thing we tried. Since it had no compression on rear and one pulse on front, it wasn't going to start. Pulled the engine today and tore it down. The rear rotor had apex seals and side seals so stuck with hard carbon that nothing was going to break them loose. The front rotor had a stuck seal from carbon buildup, the side seals were fine.

I guess the carbon buildup was sufficient that it just "cured" hard after sitting for three years. The engine only had 10-15k miles on it. Word to the wise, crank your car once a month. Don't let it sit for long periods if the engine is not new. Hated to have to tear it down. Glad no damage.

Actually no, that's not how a car is stored. Running it once a month is just going to build up moisture and carbon.

If a car is to be stored, then it needs to be stored properly:

How To Store Your RX-7

However any long term storage is going to be problematic.

Good info Aaron. Tks

MMO! yeah forgot about that stuff! was going to use WD40 to unstick mine.

Good luck let us know if it worked.