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Post by repherence2 on Jun 4, 2022 12:10:41 GMT -5
Aha, OK.
Well that makes sense, the ad said that the air filter has been recently cleaned, and the scooter hasn't been used much the last few years. That might mean that the owner had some problems that he also associated with the air filter.
And it might that the gasket is shot or that the filter was improperly cleaned or that it was remounted improperly.
I'm using oil additive that mixes in the oil tank that goes into the combustion chamber yeah.
have you even checked the air filter? is that air box modified, as in the inlet hole of the air box opened up from stock size?
have you checked the tightness of the hose and clamp that attaches your air box to you carb?
from everything you described, you are chasing a air/fuel mixture problem. just like Zino mentioned, that feeling of loosing power (on hills) is a result of the piston and bore heating up. piston expands, and gets tighter in the bore until it seizes and the engine stops. but it is still an air/fuel problem. fuel cools the bore.
ya, you can say it ran well when you first got it, but were you running it Hard at that time, like making it go up steep hills on 20km runs? or were you running it mainly on flat roads?
with the way the engine and air box is so oily and dirty, it surprises me that you do not feel the need to clean it up. a clean engine makes troubleshooting easier because the oil and dirt surrounds the leak point. you speak of small claims court and you seem to place blame on the previous owner, but have you done your due diligence in looking over the scooter after you bought it? do you have experience and knowledge on 2 stroke engines? my deduction is that you have limited experience because of you using dry gas and other additives.
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Post by morphex on Jun 4, 2022 13:11:07 GMT -5
The ad didn't say anything about modifications, so I assume that this is the case. I think the previous owner would be in deep shit, if an accident happened and it turned out the moped was unlawfully modified. It has a max allowed limit on power/speed.
Yes, I have limited experience with mopeds, so I'm being careful not to do anything that could bring into question who's at fault for the problems.
I bought a bio-degradable detergent that will remove this mess in the rear yes. I added the additive to the oil to make rubber seals etc. expand and it said on the label that after about 100km - that additive has about reached its max effect. And I was thinking I'd give it a wash after that.
But isn't it fairly obvious how the oil/substance is flowing from the picture?
Oh yes, I do place the blame on the previous owner. When the moped starts failing within a week, and I haven't done anything except fill gas, the only likely explanation I've concluded with is that there was something wrong with it when I bought it. From the website I bought it from, similar mopeds, that declared that there were issues running it, were around half the price.
From the whole experience, the impression (and evidence) I have is that he dumped it on me, knowing that there were problems, problems he didn't declare.
I think it is very smart to start on the additives route, because all the additives I've used, have either been checked against the brand and model, or they clearly state that they are completely safe to use for gas (and ethanol) engines.
Talk about gummed up carbs for example, wouldn't it be great if that was resolved just adding a little something to the gas tank? How easy isn't that compared to dismantling it, cleaning the components and reassembling it?
Isn't it possible to break the engine if something becomes very wrong with the carbs after re-assembly?
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Post by Zino on Jun 4, 2022 13:41:02 GMT -5
You are on the wrong path and making things worse .
Adding chemicals that are not specificaly for 2 stroke engines is putting your scoot at risk .
The oil injection system needs specific 2 stroke oil that is injector safe .
the oily residue you see by the airbox is normally inside the air box a 2 stroke pushes air fuel oil mixture in and out of the air box as it resonates .
No oil sealant will fix this .
Take some time to clean your scoot unscrew the air box and make sure the gasket Is sealing properly .
You will notice the air filter inside is oily .
It is supposed to be (Its from the air oil fuel mixture pushing back and forth as the scooter piston goes up and down)
A picture of your spark plug would tell us alot oh how your scoot is running
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Post by morphex on Jun 4, 2022 13:52:08 GMT -5
If the label on the additive states that it is safe to use in any engine, then it is that. These products are bought from an established, local chain that has these products as a specialty. They wouldn't open themselves up to such a liability, because they know better. For 12v batteries they sell for example, some clearly state no more than 45 degree tilt, use a low amp for charging etc.
But when you say that it serves no purpose to add it to the oil because of the design of the engine, that's something I've noted and I won't be adding more of that. Because it serves no purpose. I've got a bit for my power generators then, which are 4-stroke, and I bought one used, which could use some TLC.
Yes, I was thinking that checking the airbox was the next thing to do. But I'm wondering if I should order a new gasket before I open the airbox, and replace it at the same time. And maybe even an air filter.
I have a rain cover on the scooter, and noticed that some oil had traveled to the front display, and the oil looked like what I added to the oil tank a little while ago. So it has clearly been leaking.
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Post by morphex on Jun 4, 2022 17:07:49 GMT -5
OK, so here's the plan. I think the airbox is a place I can start without much motor knowledge, and Zino pointed out that it probably was something with that after seeing that oily picture, that's where I'll start. repherence2 also mentioned checking the connection from the engine to the airbox. I found a cheap air filter replacement that I can get locally, so I'll replace the air filter in the airbox. I'll also check the sealing of the airbox. Looking at picture of a complete air box, it doesn't look big, so I'm hoping it is possible to check the connection to the engine without taking the entire engine out / that it requires a lot of labor. Also repherence2 - no, when I bought it and drove it home, it was mostly level ground, no major hills up and down. After it lost power after one week, it had run up and down a couple of hundred meter steep hill to my home a few times. |
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Post by Zino on Jun 4, 2022 23:02:26 GMT -5
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Post by morphex on Jun 5, 2022 5:18:37 GMT -5
OK, thanks.  |
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Post by morphex on Dec 9, 2023 11:49:07 GMT -5
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