My 2007 standard (stick shift) kia rio, is passing motor oil to the radiator. The heads are good and the car runs. However, I need to add oil to the engine every other week, and flush the radiator every other week. Do you know if there might be something wrong with the block, or can it be the heads or gasket? Being a stick shift, I dont believe there is an oil coolant on those. What do you think?
Country: United StatesMake: KiaModel: RioYear: 2007
I put a sealer in the radiator, I then flushed the radiator, then I ensured the car had the required engine oil and water on the radiator. Every other week I see oil floating on the water, when I take the radiator cap off. I am still running the car. Note! Once I put the sealer, it reduced the amount of oil that went to the radiator. I have done the sealer process twice in six months. Note! my car is stick shift, and it dousn't use transmission oil, therefore I don't think there is an oilcoolan
Hello, my name isXXXXX will do my best to assist you with your questionhow many miles on the car? Is it running ok at all times? any smoke out exhaust even if slight
No smoke is coming out of the exhaust system. The car is running O.K. There is no oil leaking. Just oil going into the radiator. The heads are not broken, they were taken off and tested, they are good. There is no water going in to the engine oil, I check the dip stick often. I have seen no visible external cracks on the block. The time belt did rip over a year ago, and the vehicle was repaired on that issue. The vehicle has over 120,000 miles. The vehicle has a manual transmission. I don't see an oil coolant. I have not seen a drop in the compression. I believe the car heated up some time, due to a rusty thermostat. Am I beeing charged every time you answer my question, during this discussion?
thanks. you did not mention heads being removed. Why were they? did the problem happen before or after. This is new deatil so trying to understand
The timing belt was repalced over a year ago, and I believe some of the valves were replaced as well; the car was running fine after the work. The car still does its work, with the exception of using more motor oil because it is going into the radiator. As stated earlier, I need to flush the radiator about every 2to three weeks. I had a mechanic tell me that it might be the head gasket, and to have an expert check the heads. For this reason, I had the head removed and had a machine shop head repairer check it. He said the heads were good, and that there might be an internal crack on the block; becase there was oil going into the radiator. If there was water going into the engine oil, on the oil pan; then it would possibly be the head gasket or the heads. I had another mechanic tell me that if the oil colant was damaged,, than it would possibly send some oul to the radiator. However, he believes there is no oil colant in that type of car, since it uses a manual transmission. What do you think?
With this new info, I tend to now lean away from headgasket as I thought it most likely was. since the problem before and after head check, then that pretty much rules out a bad gasket. the head was checked and passed, It does not have oil/trans cooler for trans. When the head was removed and checked, the intake would have had to be removed so new gasket there as intake gaskets can do the same. This now does lead me to think an internal problem with block/engine. where? I do not know. This is not common. I would say near 95% of the time when this condition happens? its a bad headgasket as the oil feed hole and coolant passage are very close to each other and yes the gasket becomes weak in tha 1/2 +/- area and oil goes into coolant. When the head is removed, they obviously used all new gaskets, checked head with straight edge so.. I do now have to go to block probelm basically as process of elimination and knowing now what all was done
ASE Master Tech, 32 yrs. Diagnostic specialist
Just the last questions. If the head gasket is worn or bad, or the head is not at a straight edge as you stated: could this cause engine oil to go into the radiator? Or if the seal was bad or the head curved, not at a staright edge, cause water to go into the motor oil, only? You mentioned something about the intake gasket. If this gasket is bad, or was never replaced, can it cause motor oil to go into the radiator? I'm trying to find out if it could be a gasket or the head not being straight. For possible repair. What do you think?