300/440/550 550sx doesn't make it past idle?? Would really appriciate some help.

[cgbeachbum]

My 92 sx idles great and when cold, will run full RPMs. But once its warm, It barley makes it past idle when I give it throttle. If I shut it off for a minute and start it back up, it will run full rpms for few seconds, then back to the same problem.
I put in clear fuel lines and I dont' see any air leaks, even bypassed everthing and drew straight for the tank... I ran it with out the vent check valve, same. Played with the mixtures, pulled the carb apart and cleaned it, checked my ground wires, still have a problem. I don't have a manual, so I don't know how to check the stator coils and such, and I heard something about crank seals being a problem.... Im lost guys, any of you have a direction for me? Thanks

Update: Just pulled off the fly cover inspection plug and found some emulsified oil. Pulled cover off and a small puddle came out. Suppose to be dry right? Bad crankseal, cover gasket, splashing on the stator...???

 

[professor961]

It's time to perform a pressure test on the engine. The front crank seal could be bad, and if so it is time to replace the crank seals.
There is not supposed to be oil or oil products up front. The bad crank seals sould like the problem.

Prof

 

[darthmorbius]

Somebody who had it before you might have sprayed stuff in there. Happens all the time. After a while, the fluid get whizzed all over the electrics and you lose some ignition. Clean it all up and try it. Inspect the condition of the seals. How old are they?

 

[cgbeachbum]

I cleaned up all the oil and junk, been running it to test out more ideas. I pulled the inspection plug from the stator cover and some pressure released. sealed the hole with my hand, started it and reved it, kill it and got a more pressure.
So would anyone mind giving me the lowdown how seals would cause this problem of mine?