I put 2 cycle oil in my lawnmower while my lawnmower was fueled with Ethanol 85 gas. My mower won't start, when it does it sounds like it's coughing. Is my mower fricked or can I unfrick it?
Gasoline and oil issues
I put 2 cycle oil in my lawnmower while my lawnmower was fueled with Ethanol 85 gas. My mower won't start, when it does it sounds like it's coughing. Is my mower fricked or can I unfrick it?
Drain the gas, put the fresh proper gas in there, prime the b***h. Maybe some starter fluid to try to run all the old oil mix out.
How long did you run it with the 2-cycle mix in there?
Been using it for months. I change the oil every two uses. Using pic rel
So you have been using 2-cycle oil instead of 10w-30 or whetever for oil changes? But the correct gas?
I would compression test it. At minimum pull the spark plug and put your thumb over the hole while somebody pulls the starter cord and make sure there’s good pressure.
Do you have starter fluid? Does it run ok on starter fluid? It may be a non-related issue, otherwise your moronation could mean time for a total rebuild or new mower. If compression is still good, then there’s a good chance it’s not related to the wrong oil. At least you were running it with oil I guess.
Yeah there is bad compression, so the 2 cycle oil is not the issue right?
Be fricking clear. Did you add the 2-cycle oil to the fuel, or did you use it in place of the recommended oil to fill the crank case? If the latter, and you have bad compression, sorry but you fricked the engine and you need to either trash it or rebuild it. If you just added 2-cycle oil to the fuel, you probably didn't frick anything up that way other than maybe fouling the plug or valves.
This. Where, besides your ass, did you put the 2 cycle oil?
I added the oil to that part of the lawnmower were you add oil, it's not mixed with the fuel.
You fricked up. If you have shit compression now, you probably damaged the piston rings or valve guides by using the wrong oil to lubricate the engine. The engine might be rebuildable or it might be toast. I assume you were trying to solve the ethanol problem based on the labeling on that oil bottle, but it's meant to be added to the fuel specifically on 2-cycle engines. I guess you ignored the directions on the bottle completely, otherwise that would have been clear. Your lawn mower is a 4-cycle engine and does not need oil added to the fuel, and in the future you should not run E85 in a mower. In fact, you should follow the owner's manual for what type of fuel and crankcase oil to use. Write it off as an expensive lesson learned.
Yeah, I asked my neighbor about it (he is a mechanic), he said I shouldn't use fuel with more than 15% ethanol. Well that mower is a 12yo so it's not all bad.
Again, just so you're clear - the E85 gasoline is not the only issue here. If it was just running poorly, I'd say the E85 had attracted water and corroded the carburetor which is an easy thing to replace. It would not cause loss of compression. That was caused by you running the wrong type of oil in the crankcase, and you've fricked the engine mechanically.
This too, but OP is even more moronic than that and used 2-cycle oil to lubricate the engine. He never added it to the fuel.
>Well that mower is a 12yo so it's not all bad.
That mower would have kept going if it was 12 years old. Thankfully these engines are pretty forgiveable to morons.
First, drain the crank case and refill it with the right oil.
Next, pull the rip cord a few times with the gas OFF. What you want to do is circulate the fresh oil around the crank case.
Drain the oil and refill it with fresh oil.
Now you can either
> get a fresh spark plug and try to start it.
Or
> compression test it
Get a compression tester kit from harbor freight, remove the spark plug, screw in the tester, zero the gauge, and pull the cord.
Read the results. It should be somewhere between 60-100 psi (up to 120 if new).
I personally think you should take it to a repair shop and have then tell you if it is a total loss.
And unless you have an engine that requires two stroke fuel, I would get rid of that to avoid doing dumb again.
>muh bad piston rings
UTTER BULLSHIT, leave the thread you moronic brainlets and never show again
https://autosolutionlab.com/put-2-stroke-oil-in-a-4-stroke-engine/
you probably just have fugged up spark plug or carburettor, where the oil could have poured due to its increased viscosity.
replace the oil, clean all parts, and you should be fine
OP claims bad compression though… assuming he know what compression is
That article reads like one of those AI-generated SEO pieces, and It's not clear if they mean adding 2-cycle oil to the fuel or to the crankcase of a 4-cycle engine. And to be clear, OP used it in the crankcase where improper lubrication can frick the rings.
The biggest thing about modern fuels in these engines is to always empty the carb if you can't gas without ethanol. I use stabilizer and run the carb dry on all my small engine stuff when putting them away every time. Seems to keep the carb from gumming up as quick.
adding it to the fuel will frick up the carbeurator since its not designed for the gas+oil mix. probably messed up the float or the jet
This
If the compression is bad, maybe a rebuild but probably better off with a new mower unless it’s a fancy pants model with parts availability.
That’s what I thought when it seemed like he put 2-stroke mix in the gas tank, but not if he killed the internals running 2-stroke oil instead of regular motor oil.
AHHAHAHAHAHAHAAAAAA
Prolly fine
Ethanol always clogs these motors up, just use starter fluid until it keeps going
Just run it like shit until it runs good.
drain everything
put the correct amounts of the proper fluids into the proper places as per manufacturer instructions.
then start over
will using 2 stroke oil in the oil reservoir even cause problems? It'll still lubricate
yes it will. 2 stroke oil is thinner than 4 stroke/motor oil because its designed to be mixed with GAS you unbelievable moron... anyone with half a brain knows you use 4 stroke oil in a gas mower.. only equipment that uses the gas+oil mix is small engines such as weedeaters, blowers and chainsaws. because these are 2 stroke engines and require 2 stroke oil+gas mixed
you done fricked up that engine. you are a moron
You put 2 stroke in the gas? Drain at least half the tank and add more gas to dilute the oil and try again. It can burn the oil, it'll just smoke a bit while it does so. Using two stroke gas is actually a good way to go about reviving an old engine since it provides lubrication compared to just washing down the cylinders with gas or some starting fluid.
no stupid have you been even following along? he put 2 stroke oil in the crankcase instead of 4 stroke. goddamn why cant people read the whole fricking thread before replying and asking stupid shit thats been answered already.
which should not cause any particular problems
it's all oil after all
these motors aren't picky
Turns out my lawnmower has carborator and compression issues, got that taken care of and now it works fine. I will continue to use the oil and gas that I have always been faithful to.
Thanks guys.