Kind of a long read, sorry. 1992 240sx w ka24de 5spd
So I get home from trying to do the course setup this morning, and I decide to check my codes to see if I am still throwing a leaky injector code, and I am. So I take off my gas cap and pull my fuel pump fuse and start the car; to depressorize the fuel systerm. The car died like it should, then I cracnk it some more to get the rest of the fuel out and it starts back up, weird, but okay. Let it run some more, it dies, I crank it again, it refires, wierd, but whatever. This goes on several more times until I say F it and go and pull the suspected leakey injector, and get sprayed in the face with about 40 psi of gas, fun times. So after I wash all the gas out of my eyes, I proced to reinstall everything. Start the car back up. Now I have to pump the pedal to get it to fire and it is running EXTREMLEY rich, and idleing very rough. I let it run for a while to see if maybe I flooded it. Nope, let it run for abut 10 -15 minutes and same thing, I could have probably lit my exhaust fumes on fire. So I decide to check my plugs to see if it is the cylinder I just replaced the o-rings on, or if it all the cylinders that are runining rich. I pull the first plug out and SPLOOSH, 710, I mean oil.
I just puuled my valve cover and shoved my pen light down in the cylinder, the top of my piston has a nice sheen to it (soaked in oil). None of my other have an issue. And it is blowing a blueinsh white smke from the exhaust, it smells like gas, but I didn't notice any burnt oil smell.
I dont have the skills to figure out if it has a stuck lifter, scored cylilinder walls or blown rings, guess I could get a compression testor... but the I would just have to rebuild a motor that is still having other issues. I think I am just going to try and find a new motor.
Or could it be a blown head gasket?
Modified by cracker at 10:23 PM 8/3/2006
oil in my #1 cylinder
blueish whte smoke is oil and it is a bit odd that it is just now doing that. if your piston has enough oil on it that you can see it then you are getting quite a bit of oil in there and it would have started smoking as soon as that happened which would be just now. i dont know enough about the particulars of the ka24de to know if it could be a blown head gasket but it is possible depending on engine design. i would like to know which cylinder you put the new o-rings on because i guess it is possible that oil got into the intake runner while you had the injector out although i dont know why unless you have an oil leak. without more info it could be one of several things but dont get too upset yet and do some more investigating before you condemn the engine
Re: (pmkls2)
All four of the injectors got new o-rings a few weeks ago. I redid the first cylnder today due to having the new one tear and having to put an old on one when I initially put the new rings in. So this is the third o-ring I have put on this injector; One new then the old one the same day and now another new one. And it is the same cylinder that dumped the oil. The car was running reletivly fine until today; after I put the new oring in. the fuel system not depresserizing before I pulled the injector bothers me too. I dont think there is any way oil could get in throught the fuel rail / intake runner.
the only way that oil would get in there is if it dripped in there somehow but it is highly unlikely it was just an idea i threw out there. i do find it wierd that the same cylinder is getting oil in it now it seems like it is more than coincidence. you just need to start doing more investigation to see. reinstall everything and drive it a few miles and see if it clears up before you do anything else. running it without driving it isnt sufficient to clear the cylinders out if they are flooded with oil or gas