So i have this 13b renesis on an engine stand with the intake off except for the lower intake manifold (so no throttle body). I am trying to deduce the condition it is in, so in the state I just described I can turn the engine by hand via the crankshaft pulley and I hear one puff, then a lot of gurgling and sloshing of liquid. It it just flooded or is this telling of a worse problem? Should I be able to turn it by hand with the spark plugs in? This is my first rotary so bear with me
You should be able to hear three distinct puffs. Pull the bottom spark plugs on both rotors. Put a ratchet on the front or back nut and turn away quickly. If you have a bunch of liquid in there it should squirt out. You should be able to hear distinct puffs.
okay so with a ratchet I am quickly turning the engine 180 degrees with each thrust, and I hear one distinct puff from each of the two bottom spark plug holes alternating each time. Is this bad or Am i doing it wrong?
EDIT: okay so I found out you pull one spark plug at a time and I realized some times the engine was spinning back on me. So, with only one plug pulled I spin the engine 180 (ratchet handle top to bottom ensuring it doesn't spin back because of compression) and I hear a very distinct puff each time I do that. I know that isnt 3 but wouldnt there be a pause between the two? each puff is equidistant in rotation of the engine shouldnt there be a gap if a apex seal was blown? being a triangle and all, what am I missing, Or is this okay?
One turn of the eccentric shaft is 1/3 of a turn of the rotor. Since it has three faces, that's one power pulse per rotor, 180 degrees out of phase with each other.
Gurgling and sloshing of liquid sounds odd. I assume the rotor was previously in the car, meaning that there's probably still some coolant in it? Are you rocking the motor when you turn the crank? If so, maybe it's just sloshing around in the coolant passages. Can you make the same noise just by pushing on the engine without turning it?
If you're worried about coolant inside the combustion chambers, you might be able to sneak a USB inspection camera in there if you position the rotor with one of the apex seals just above the spark plugs -- never tried it, but seems like it might work.
In reply to codrus :
oooh thank you, so I am fine yes? so when you say one turn you mean 180 not 360? and that fluid I found out was actually ATF that the engine warehouse put in inside to preserve the engine and protect it on first startup.
One rotor will have one compression/combustion/"puff" event every 360 degrees of eccentric shaft rotation. Since you have two rotors and they are 180 degrees opposed, you will get one event from one of the two rotors every 180 degrees of eccentric shaft rotation, or one event from each rotor (two total) every 360 degrees of eccentric shaft rotation.
To check every face of both rotors, you need to complete three full rotations of the eccentric shaft (1080 degrees) and you should get three strong puffs from each rotor.
I'm a visual learner and the video below shows how the rotor works. Watch the eccentric shaft and rotor rotation. Notice you get one compression/combustion event for every 360 degrees of eccentric shaft rotation.
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