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Car Forum / Driving, Maintenance, Tuning / General Car Topics / June 20062 stroke oil in a 4 stroke motor ??
Hi My neighbour, an old lady, have a Honda 4 strokes motor lawn mower. Wen I was talking about her lawn with her she show me the motor oil she used for few months in her lawn mower. She use a 2 strokes motor oil !! What a 2 strokes oil can do in a in a 4 strokes motor ? And can it did clog the oil pump or the oil line going to the motor cylinder ?? I ask that because after looking in the spakplug hole with a light and I think the motor have overheat and it was seem to have leave no oil on the cylinder surface wen I crank it, I was think that maby the oil pump or the oil line going to the motor cylinder are glog. I've take out all the 2 strokes oil from the oil tank, but how can I totally clean out that 2 strokes oil from the pump and oil line in the motor, any chemical product or else that I can use without taking apart the motor ? (I would unplug the spakplug and put the chemical in the oil tank and crank the motor some times) Thank Gaetan You are mixing up engines and how they work. The 4 stroke has an oil sump in the bottom you fill up with oil. This oil gets splashed around to lubricate things. There is no 'oil tank' or pump. The cylinder just sees straight gasoline like a car engine. I would just fill the sump back up with the correct oil and see what happens. The 2 stroke oil in the bottom shouldn't have hurt much, but it could have... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pictures.html?id=2115147590 (More Off Road album links at bottom of the view page) > Hi > [quoted text clipped - 23 lines] > > Gaetan > I would just fill the sump back up with the correct oil and see what > happens. The 2 stroke oil in the bottom shouldn't have hurt much, but > it could have... > > Mike I agree with Mike, Gaston...Just drain out the old oil and replace it with the recommended 4 stroke oil. Don't overfill. If any permanent damage is done, there is nothing you can do now...Correct the fluids and see what happens. > You are mixing up engines and how they work. > > The 4 stroke has an oil sump in the bottom you fill up with oil. This > oil gets splashed around to lubricate things. There is no 'oil tank' > or pump. I'm just looking through the manual for my mower, a 20" Craftsman with a 4hp Tecumseh 4-stroke. In the parts list and exploded diagram for the engine is...an oil pump. It appears lube on this particular engine is both splash and low-pressure pump, like some '30s car engines. It's a flathead and even has a road-draft tube.  SignatureTeGGeR® > > You are mixing up engines and how they work. > > [quoted text clipped - 12 lines] > -- > TeGGeR® Yeah, some do (have a pump) and some don't. A lot more don't than do. My rider has a pump and a filter, though a push-mower with a pump is a new one on me. Dave Gaetan Mailloux wrote in rec.autos.misc > Hi > [quoted text clipped - 5 lines] > > What a 2 strokes oil can do in a in a 4 strokes motor ? Lubricate it. The major difference between 4 stroke and 2 stroke is that 2 stroke oil is formulated to burn easily, while 4 stroke oil isn't supposed to burn. The lawn mower should be fine, as long as the proper viscosity was used and the oil was kept full. > And can it did clog the oil pump or the oil line going to the motor > cylinder ?? No, it is not going to clog anything. If anything, it will be a bit cleaner than 4 stroke oil because it has to burn cleanly. > I ask that because after looking in the spakplug hole with a light and I > think the motor have overheat and it was seem to have leave no oil on > the cylinder surface wen I crank it, I was think that maby the oil pump > or the oil line going to the motor cylinder are glog. The pistons have rings on the sides of them to keep oil from getting into the combustion chamber (which is what you were looking at). A properly running engine will not have oil where you can see it from the spark plug hole. > I've take out all the 2 strokes oil from the oil tank, but how can I > totally clean out that 2 strokes oil from the pump and oil line in the > motor, any chemical product or else that I can use without taking apart > the motor ? (I would unplug the spakplug and put the chemical in the oil > tank and crank the motor some times) Don't worry about cleaning it out. It is oil, and will not hurt a thing if there is a little bit left in there. Just fill it up with the proper type of oil and it will be fine. SignatureDick #1349 "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." ~Benjamin Franklin Home Page: dickcr.iwarp.com email: dickcr@comcast.net What is your native language? I can tell English is not your first language. Try posting in your own language. Then maybe someone will be able to interpret or explain for you. Pop > Hi > [quoted text clipped - 6 lines] > > What a 2 strokes oil can do in a in a 4 strokes motor ? A 4-stroke motor would run very rough with oil in the gas. It might not even run. It would make a lot of smoke too. It would be hard to start the motor. The spark plug would be very black. Could you have said it wrong? > And can it did clog the oil pump or the oil line going to > the motor cylinder ?? No. Maybe it would make some clog but not much if the engine is able to run. > I ask that because after looking in the spakplug hole with > a light and I think the motor have overheat and it was seem > to have leave no oil on the cylinder surface wen I crank > it, I was think that maby the oil pump or the oil line > going to the motor cylinder are glog. I think you have too much trouble with your words here. Either 2 or 4 stroke you would not see the oil in the spark plug hole that way. It is hard to see it. > I've take out all the 2 strokes oil from the oil tank, but > how can I totally clean out that 2 strokes oil from the > pump and oil line in the motor, any chemical product or > else that I can use without taking apart the motor ? (I > would unplug the spakplug and put the chemical in the oil > tank and crank the motor some times) You do not have to do anything or clean it if the engine is starting and can run. Just be sure to follow the instructions. Put the right oil where it should be. The motor should make itself right in a short time. Maybe two or three times cutting the lawn. Be patient. It is probably OK. Be very sure to put the right oil only where it should go. That is the most important. If you have a manual use it to figure out where it goes. Best regards, Pop > Hi > [quoted text clipped - 26 lines] > > Gaetan Anyone know/recall the How Things Work URL? This person obviously isnt' English speaking and I suspect from his terminology that "tank" for instance could be anything from a gas can to an auto-mix 2-stroke oil tank, to the oil pan, to etc etc.. He needs some very simple and short sentences with as few adjectives and adverbs as possible in order to help him. I would try but I do not feel qualified to use the proper words. .. A 2-stroke engine must have oil mixed with the gas. .. A 4-stroke engine does not need oil in the gasoline. .. A 4-stroke engine has an oil storage in the bottom of the engine. .. A 2-stroke does not have a ... and so forth. I'm not very good at it. The How Things Work seems like a good place for him to start. Maybe someone who speaks his language would be even better. Pop > I would try but I do not feel qualified to use the proper words. > > .. A 2-stroke engine must have oil mixed with the gas. I seem to remember that some companies developed, and perhaps even produced, twostrokers that didn't have to have oil in the fuel. The idea was to reduce pollution, I guess. Don't know what ever happened to the idea. > > I would try but I do not feel qualified to use the proper words. > > [quoted text clipped - 4 lines] > was to reduce pollution, I guess. Don't know what ever happened to the > idea. Lots of older 2 stroke bikes and scooters have an oil tank and oil injection so you just need to add gasoline to the 'gas' tank. Vespa used this for one. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pictures.html?id=2115147590 (More Off Road album links at bottom of the view page) > > > I would try but I do not feel qualified to use the proper words. > > > [quoted text clipped - 8 lines] > injection so you just need to add gasoline to the 'gas' tank. Vespa > used this for one. -As I remember the case, they actually had a pressure oiler system on the developmental two stroke engines. It was not a matter of injecting oil into the gasoline or into the stuffing box. I'll have to do a web search and see if I can find anything on these engines..
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