twigg

rx7 has been sitting for 2 1/2 years in a garage. i have the intake manifold off because theres gas leaking some where but, i can't get the motor to even turn over, and the starter is fine. i think its locked maybe.

any help or guide link would be highly appreciated.

RotaryResurrection

iTrader: (8)

Remove all accessory belts, remove the starter, ensure the trans is in neutral, and try to turn the engine clockwise by hand using a 19mm socket and ratchet on the crank pulley. IF it will not turn then it's time to start pulling it out of the car.

2-N-D-pink

iTrader: (27)

I heard of carbon lock on rotaries but never seen a case personally.

Hopefully your engine didnt have bad coolant seals before you decided to set the car down. And if they were bad draining the engine block of all water/coolant SHOULD of been the ideal thing to do instead of leaving the water in there. Leaving it there leaves a chance for the water to stay inside the combustion chamber. Making your intermediate housings and rotors rust. Which = a locked engine

Pull your turbo and check the inside of your rotor housings.

RotaryEvolution

iTrader: (30)

i've unlocked them before but it can be a royal pain in the ***. inject MMO into any open port you can get to(OMP, intake, spark plug holes, exhaust, etc) and let it soak for a few hours then with a long 1/2" breaker bar with another 2-3' cheater on it rock the main shaft forward and back.

eventually it should start to work loose.

i did this procedure on a few engines, one in particular was in my '74 REPU that sat for 24 years, it ran perfectly fine afterwards. another was in a free '88 SE i picked up, got it unlocked and drove it for about 8 months before selling it still running, but it was beginning to smoke at that point.

although in some cases it is a sign that the 3 piece apex seal tip fell out of the rotor due to high mileage and locked up the rotor with graham crackers.