Baja 196cc brown grayish oil

[Budget GoKart]

Well im going to take the head off but this engine did this before with gas but i just sprayed pb blaster in without a sparkplug and when i turned itover nothing came out

 

[950speed]

Water?
Old oil?
Wrong oil?
Specialized oil(idk)


Pull the head and check for damage

 

[mckutzy]

First... Did it work prior to pulling the oil cap??
What prompted the oil check...just maintenance???
PIcs of the whole motor....
Was the carb exposed??? ect...

 

[Budget GoKart]

Normal 10w-30 didnt run prior to pulling oil cap. i took the engine apart everything looked clean exept the carb was corroded slightly and i pulled the cap to see if it had done it again the engine sat for about a month. Still hard to turn over. The cylinder wall looked a little bit rusty but not anything to be worried about.

 

[Hellion]

Do you store your engine outside and has it been humid or rainy lately?
Sounds like water in your oil. Think condensation.

Quote stolen from here: http://www.offroaders.com/tech/milky-stuff-under-oil-cap.htm

A weather change from warm, moist weather to cold weather or repeated frost (condensation) on the vehicle and frequent high dew points can create moisture to form in the crankcase. This can appear as condensation in the oil system and under the valve covers. Most of the time vehicles are driven long and far enough so that this condensation is burned off thanks to the heat of the engine. However a vehicle that is not driven very far and does not reach full running temperature for very long may not purge out the moisture. Vehicles that are not driven frequently and sit outside can also acquire moisture in the oil system. When these vehicles are driven, the engine generates some heat during the short drive, then cools. The trapped moisture condensates on the coolest parts of the engine.... Repeated short trips will leave behind more and more moisture on these cooler parts...

Ooops, read and re-read post #4. Rust and corrosion? Rust in the cylinder? Seems like a no-brainer on the cause: excess H2O.

PB Blaster is a penetrant. It most likely seeped past the piston rings and into the crankcase and discolored the oil a bit too.

What is it you are trying to do with this engine? Was it seized?

 

[Budget GoKart]

It was seized and it sat outside before i got it and most of the time i had it now it sits in a barn. When i traded for it, it ran but barely and now it barely pulles over. Especially with a spark plug in it

 

[landuse]

Looks like water in the oil. Tear the engine down and do a rebuild

 

[Hellion]

It dawned on me recently how un-resistant these engines are to weather, as in being rained on, snowed on etc. I loaned out a power tool and the fella left it out in the rain and wondered why he couldn't get it started.


Then again you have some people who take the air cleaner and housing off, so the water gets into the intake and into the cylinder, etc.

 

[Budget GoKart]

Looks like water in the oil. Tear the engine down and do a rebuild

I tore it down nothing was bad it seems even the piston was clean and it had no play side to side everything looked great also forgot to remove the gov while i was in there

 

[JTSpeedDemon]

Just because it has no play it doesn't mean the bore hasn't been damaged. Look as Carsandcameras' Rat Rod Wagon, it's a good engine, but the bore has been pitted with rust, causing it to smoke really bad. But yeah, you HAVE to clean out ALL of the rust or risk losing that engine.

 

[Budget GoKart]

Its pretty much junk anyway so ill let my grandfather fix it he can do it very quick and easily he knows more anyway

 

[landuse]

I tore it down nothing was bad it seems even the piston was clean and it had no play side to side everything looked great also forgot to remove the gov while i was in there

Did you check if the rings were worn?