1980 qt50 won't start

I have put a brand new carburetor, spark plug, coil, gaskets, and fuel filter and it still wont start... ANY SUGGESTIONS?* Moved to this forum by simon

Re: 1980 qt50 won't start

Louis Brunskill /

Spark?

Re: 1980 qt50 won't start

Moped Lar (OFMC) /

Fuel, spark/timing and compression. You need to verify each of these things.

Re: 1980 qt50 won't start

William Johnson /

Whats the battery situation? People run them without one and end up burning up the charge coil.

Re: 1980 qt50 won't start

Jack Rutherford /

did it start before you put the carb on?

Re: 1980 qt50 won't start

Are you getting GOOD spark? Will it fire if you squirt a little gas in it?

Re: 1980 qt50 won't start

Jack Rutherford /

Earth to Robbie, come in Robbie.

Re: 1980 qt50 won't start

Gonna add my two cents to this.**

only because I'm having a similar issue that might be related here.

**I need to know what good spark is and how to test for that. What would that look like on a meter and can I read it with one without getting zapped?

Also, Robbie, I think I'm in the same boat as you. I do have a replacement stator from a PW50. I've changed many parts on it except for things inside so far. I did have someone tell me that my reads could be all kinds of messed up or stuck curled or something like that...

Reeds!!

Does anybody know if my reeds being weird could do to my QT50, what is happening to Robbie's QT50?

Re: 1980 qt50 won't start

Jack Rutherford /

i've had 8 qts and never had an issue with the reeds.

spark - put plug against head, turn key on and work the kicker. you need to get a consistent blue spark. yellow or intermittent or both be no good.

Re: 1980 qt50 won't start

Yep. My Sparks are yellow and white. Shit.

Glad I got a PW50 stator for 13 bucks. How shity is it to take the flywheel off? I've never done one of these before. I don't have a proper tool

Re: 1980 qt50 won't start

Angry Hipster /

I swapped my charging coil with one from an ebay pw50 coil. I wish I would have took pictures. You just order a flywheel puller and a piston stop, no big deal.

It does involve flipping the coil and a little wiring, once again I wish I would have taken some pictures. I do know that everyone says you have to solder, but I was able to use wire and carefully twist it under the coil mounting screws and it made a solid connection.

Re: 1980 qt50 won't start

Jack Rutherford /

yes the right tools and a little bit of time.

piston stop

flywheel puller

and an inch/pound torque wrench

Might as well change that seal while you are at it.

or get all the seals at once

get a big washer that will fit over the crank and a piece of pvc pipe that will do the same. I like to use Yamabond on that side on the outside of the seal. Place washer over seal and the use the pipe and a rubber mallet to tap it in place. Seat it flush with the case. Don't strip your stator screws either. Get a blunt tip screwdriver. They will strip otherwise. they're always in their good.

button it up and enjoy the ride.(edited)

Re: 1980 qt50 won't start

> William Johnson Wrote:

> -------------------------------------------------------

> Whats the battery situation? People run them without one and end up

> burning up the charge coil.

So, that's how that happens?

Re: 1980 qt50 won't start

Rob LaFreniere /

> Jack Rutherford Wrote:

> -------------------------------------------------------

> I like to use Yamabond on that side on the

> outside of the seal.

Hi Jack,

I am just beginning my adventure into wrenching on a qt50. What is the benefit of the Yamabond on the seal? I didn't read anything about that in the service manual.

regards,

Rob

Re: 1980 qt50 won't start

Jack Rutherford /

Some say don't do it, some say do it. It makes the seal a little easier to push in and once it dries, it may provide a better seal. You would just use yamabond on the left side and not the right (as the right side is bathed in oil).

Re: 1980 qt50 won't start

Rob LaFreniere /

Understood, thanks.

Re: 1980 qt50 won't start

No

Re: 1980 qt50 won't start

lol can't edit that ^

> Stephen Keller Wrote:

> -------------------------------------------------------

> > William Johnson Wrote:

>

> > -------------------------------------------------------

>

> > Whats the battery situation? People run them without one and end up

>

> > burning up the charge coil.

>

> So, that's how that happens?

I haven't had any coils burn out that way I have 7. 78-90 we're known to have faulty charge coils that went out around 1000 to 1500 miles. If you have one of the earlier models that doesn't have a voltage regulator and you run without a battery you will blow the headlight.(edited)

Re: 1980 qt50 won't start

Have you checked the compression?

That will also show if the reeds have a problem.

Brian G at least get the puller they are cheap and you will be glad you did.(edited)

Re: 1980 qt50 won't start

You have a link to that puller?

Re: 1980 qt50 won't start

> Arlie Endsley Wrote:

> -------------------------------------------------------

> lol can't edit that ^

>

> > Stephen Keller Wrote:

>

> > -------------------------------------------------------

>

> > > William Johnson Wrote:

>

> >

>

> > > -------------------------------------------------------

>

> >

>

> > > Whats the battery situation? People run them without one and end up

>

> >

>

> > > burning up the charge coil.

>

> >

>

> > So, that's how that happens?

>

> I haven't had any coils burn out that way I have 7. 78-90 we're known to

> have faulty charge coils that went out around 1000 to 1500 miles. If you

> have one of the earlier models that doesn't have a voltage regulator and

> you run without a battery you will blow the headlight.

I have an '80, only rode it once, battery is toast, but the only lamp that worked was the headlight, maybe I have a regulator? No idea how many miles are on it as this year did not come with an odometer.

Re: 1980 qt50 won't start

Jack Rutherford /

treatland.tv - search for qt50 puller

Re: 1980 qt50 won't start

Sorry for the late responses I found out that the rings were seized in the piston so I gotta replace them

Re: 1980 qt50 won't start

I feel like when this happens to my engine, I'm going to go for the 60cc kit I've seen out there. I think it might be worth it to have 10 extra CC's that I didn't have before

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