Have a look at your exhaust. It may need to be cleaned.
Anyway, that's my 2 cents.
> Hey, what's up? I have a 1980 Pacer Moped that's been giving
> me some trouble (I'm not sure of the model, it doesn't seem to
> have any name besides Pacer.) Anyways, I've had it about 8
> months and in that time, I've put around 800 miles on it.
> Well, recently, it started bogging down and stalling out a lot
> more. It doesn't accelerate as quick, doesn't have as high of
> a top speed, and it's hill-climbing really sucks. It used to
> go 25-28mph on flat terrain, but now only gets up to 19-20. I
> cleaned the carb and put in a new spark plug, but that didn't
> change anything. It is still sluggish. I'm sure there's an
> obvious solution to this problem, I'm just not too experienced
> with maintaining it. Could it be perhaps related to something
> in the transmission going wrong?
> On a related note, what is the best octane fuel for a 50cc
> two-stroke? I've been using 92 or whatever the premium gas is.
> How much oil should I be putting in per gallon? I've been
> following the original instructions loosely, which says 6 fl.
> oz./tank (0.9 Gal tank).
> I'm still looking for a shop manual for the bike, but haven't
> found one yet. Any thoughts?
> Thanks a lot.