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The MC-54 is a nice looking scooter.

That link for the PDI was an excellent written tutorial. It would be wise for any Chinese scooter owner to follow that procedure.

That being said, I must be one of the few people here that think there is just something fundamentally wrong with having do that much work on something that is purchased new...

If all of this extra work and checking is a quest for more reliability,
why not spend a little extra money to get it? A Chinese style PDI can only go so far in preventing future problems on a machine that is questionable to begin with.

And yes, for the few people that have had very good luck with their Chinese scooters, we can find a dozen that didn't. That's terrible odds, is that really a way to save money?

People should expect at least 30,000 to 50,000 miles of service out of their scooters with only basic maintenance and normal replacement parts for wear item like tires, belts, roller weights, and maybe a clutch or variator face. You should expect that only one out of a dozen might have an actual mechanical failure, and those kind of odds will save you money!

My crusade continues ;D

I've explored Truth or Consequences and Elephant Butte several times on both a Honda Elite 110 and a SYM HD200. What kind of scooter are you riding?

You are only a short distance from NM Highway 152 which takes you to Silver City through the Black Range. It's got to be one of the best motorcycle/scooter roads in America, though it's not well known.
It's so curvy a lot of big cruiser motorcycles won't even attempt it, perfect for a scooter or small motorcycle.

My son and I blew through there on a Suzuki TU250X and the SYM HD200 on a 300 mile day, one of our most memorable rides.

Sorry to hear about the soft seize, let us know if you figure out exactly what happened.

What modifications did you have on it?

If you modded/changed the air box and/or exhaust without switching to a larger main jet, you are going to be running lean.

On my stock Tomos Nitro 150 (made by SYM) the 80% to 100% throttle felt a little "flat". Overall the scooter ran very well, but by changing the main jet from 108 to 110, I got a little extra oomph on the top end.

The Tomos Nitro 150 has an air-cooled GY6b engine that cranks out about 10.5 hp, but above 50 mph you have to be patient when accelerating. That being said, when I whack the throttle all they way open at higher speeds you can feel a small increase in speed up to 60 mph, and then it runs out of steam. It can hit an actual 65 mph if you tuck in like a dork and give it a few miles.

I only ride that fast when tuning the scooter, normally I just need it to cruise 50 - 55 mph two-up with a little throttle left, which it does quite well.

prodigit, other than you, we have already agreed and confirmed that popping on deceleration is not normal.

If you want to accept this and try to give a meaningful answer, that would be helpful.

Otherwise please start your own thread about your machine that has completely screwed up tuning, it has absolutely no bearing on the OP's thread.

You won't listen of course, but if your idle is inconsistent and higher when the bike is hot, your pilot circuit is probably too lean or needs something. And using your choke isn't going to fix it properly. The choke is used specifically to add extra fuel to make it easier to start a cold engine. In warm weather it shouldn't even be necessary to use it, just 10 or 15 seconds of running should smooth out the idle.

Sorry about the interruption domindart ;D

OK, I wasn't going to say anything else, but you are right.

I do have issues...

I have issues because I just can't stop myself from reading your pathetic drivel, even though it makes me want to puke.

About the speed limit drivel.

You didn't specify what state, it's not in your signature, and Florida is not the only place that people ride in this forum.

I live out west and the interstate speed limit is almost always 75, sometimes 80 mph. Two-lane highways are anywhere from 55 - 65 mph.

You can't make generalized statements like they are some kind of universal law. Be more specific and precise, give more information pertaining to the circumstances.

If I were to say something like "all people like to drink chocolate milk", I would sound like an uninformed @sswipe. Just because I like to drink chocolate milk, it doesn't make it some kind of universal/generic preference or fact.

When you are spouting off universal statements about gearing, certain rpm's, fuel consumption, top speeds, horsepower, engine efficiency, ect, you cannot make specific statements that are supposed to apply to everything. There are too many variables and exceptions, they don't always follow your universal statements and trying to say so in a factual manner makes you sound like an idiotic wannabe mechanic that doesn't know Jack.

Just like that piece of junk 127cc motorcycle you bought. Not only is it the biggest waste of $1050 ever, you are incredibly inept at trying to get it to run correctly. You still have no freakin' clue how to get the carb tuned, but by god you sure as heck don't hesitate to give out advice here like you're some kind of a mechanical guru.

I think my favorite is how you constantly give out advice on motorcycles and scooters you've never even ridden, much less owned, acting like you're an expert.

Oh yeah, and when you are doing research online to come up with your expert opinions, how do you know you aren't reading something that an idiot like you posted, spouting off inconsistent and incorrect drivel?

It's pretty obvious you don't

I'll give you credit for being an incredible optimist though.
'Cuz if I lived in your world of piece of crap machines that ran like , I sure wouldn't be able to pretend like I knew what I was doing ;D

But very few times does one really need top speed out of a bike. Anything above a 150cc, generally has sufficient speed to surpass the speed limits on level ground, since the interstate is about the fastest road in the country, where top speed is capped at 60MPH

What country are you from? No, I mean what planet?

Are you trying to say the interstate speed limit is capped at 60 mph?

Somehow I think you meant something else, just not sure what.
.
I won't say anything else about your twisted logic and incorrect facts. If someone wants to believe your idiotic drivel, that's their problem.

Sorry for busting your chops, I apologize and stand down.