MOPED ARMY

If it runs then it's sending fuel. Restarting doesn't require more fuel strictly than running. If the oil mix is doubled up (why haven't you checked the pump output and dumped the mixed gas?) Then it will create a gooey fouled plug and that can be difficult to start.

If the guy had the bike long enough without knowing it had a pump, the tank is likely empty and you will need to fill it, bleed the line thoroughly, and verify pump flow. Then, and only then, connect the pump and run the bike on a small amount of premixed fuel until you are sure the pump is supplying oil.

The petcock has a prime setting.

Thank you guys I'll check that oil pump today. This morning I started it up and it ran super well, got up to close to 30 and was driving for maybe 3-4 miles, then it started bogging a little bit again so I put it away. I was asking how to check if it was working because the guy I bought if from seemed to not know it even existed, so maybe he was just running premixed because he didn't know, burnim going to check and see if that's the problem too

Yeah it's weird! I unscrewed the two tiny screws on the pump and a bunch of oil leaked out so I assume the pump is working like it should? I got new fuel line to make sure there's no holes in the vacuum tube or fuel line because it seems like maybe it's not getting enough fuel? I checked the float and it seems pretty solid no rust or when I shake it no liquid noise. I think it's running double oil but I'm still afraid to change it into regular non mixed gas because I'm not 100% sure. When full throttle it eventually will just cut off and die. I can't find much on this moped which is a bit frusterating.

Also does the battery effect running and starting? Or is it just for the lights and such.

Axldeziak . Wrote:

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Sick! Like I said I've never had one of these before and have very little mechanical experience but I'm learning it now, I appreciate the feedback.

Anyone still monitoring this thread? Bought a Suzuki FS50 for my wife's Christmas gift. Never used oil injection before and if it ain't broke don't fix it. May have to bite the bullet and follow the recommendations to bleed, just concerned with my zero experience with bleeding (aside from knuckles and brakes) I may make it worse. Previous owner responded to my text asking if he was using the oil injection. Based upon the condition of the oil tank it "appears" to be freshly used, and he confirmed he was using it, just make sure to let it warm up. I asked was he also using premix given the exhaust was quite smokey and he never replied.

Getting it set for winter I siphoned out his remaining fuel and put in 95 octane ethanol free 4 cycle gas. Topped off the oil tank with quicksilver 2 stroke oil synthetic blend. Says suitable for oil injection...Bought it at auto zone.

Around mid 40s today so took some work warming it up. The exhaust soon changed from blue to more of a gray. I was a little concerned but decided to take it for a quick spin to cycle through the fresh gas with stabil in it.

Seemed to be running fine but it didn't smell quite right and I started to worry I was burning up the engine. Probably rode it about 2 miles. I checked the oil level which had been at the very top of the filler neck and it was down to the bottom of the filler neck.

Any thoughts? Supposedly a "low smoke formula"...the only thing I have to compare this to is my Puch which doesn't smoke much. Love that moped.

Great site....been on it quite a bit during my moped search. Thanks in advance

You know, I saw that on the shelf too...well, there's always next time.

Do you think it's a combination of high octane fuel with low smoke oil that's giving it the gray color? One thought I had is that maybe I'm burning out old deposits in the engine and exhaust?

I always figure two strokes would burn blue in color. Heading into winter I put two stroke ethanol free gas in the Puch....50:1 already mixed (expensive as !:#&) and hardly any smoke. But also not getting a burning smell.

If the previous guy was running p remix alongside the oil injection there's probably quite a bit that could burn up with a leaner mixture.

Thanks for such a quick reply. Love the enthusiasm

You might remove the exhaust and clean it out .

Oven cleaner seems to work pretty good .

Fill the pipe and let the cleaner work for a while . Then rinse with the garden hose .

Repeat .

The smoke should 'clear' a bit after you run the bike for a while and it gets use to how you run it and what you're running in it .

I run regular 87 octane gas . (edited)

Came across a post by someone 12 years ago with a Suzuki TS 125, who was having oil injector problems. Forgive my ignorance is this was written already (I'm sure it was) but would his procedure work on the FS50 for priming?

Direct quote:

pull the in line off the pump and let the oil run through the line to force all the air out of the line. When the air bubbles quit coming out and you have a solid stream of oil hook it back up. Take the out line off and kick the bike over until oil comes out of it (it ain't much so you have to watch it close) then hook it back up. Make sure the passage is clear where it goes into the carb.

End quote. My question - is there any chance of introducing air especially with a disconnected out line hose when kicking the bike over and then reconnecting with the bike obviously off? I'm still not 100% convinced my oil injection is working. I guess logically seeing the oil level go down and not seeing any oil leaking anywhere then it must be going into the engine, but like I said, I'm new.

Or I'm craving shop talk during a pandemic...

What kind of oven cleaner? Most I've seen comes in aerosol. How long to let it "cook".

Joe

Awesome - thank you for the quick reply. I had burned out the muffler earlier this fall, but now have rest of bike together and finally out for test ride yesterday. Wouldn't go over 22mph. Figure I'd start with the exhaust (have ordered manifold pipe gasket too).

Joe

Roger that. Will give it a reaming.

Joe

Decided I was over thinking it and on a nice day today I fired it up. The fuel peacock is stuck in the ON position so I couldn't use the prime option....just kicked it 7 or 8 times and it started.

Gave it a long warm up and then slowly started on a test ride. Gradually opened it up and it ran great.

Here's my mini restoration...sorry to the hard core enthusiasts, my wife's favorite color is orange so it's no longer the traditional red and white. Fire orange and a DIY magnet decor, new seat cover and muffler cover.

Fun little ped...much more responsive than my Puch. A stinkier (lol)