04 laser 50 with no spark

[LaserProbie]

Hello, I have replaced the ignition coil, the stator, the battery, and spark plug.

This moped has sat for an extended period of time.It has no ignition key assy. The only thing I have not replaced is the CDI. I would like to know if there is anything I can try before I order more parts. It turns over, is getting gas, but it's not getting a spank. Please help.

[harry]

are you holding in the brake when starting?
sometimes the left brake switch gets dirty  try
starting with the right lever too.

kill switch maybe bad or off.

do you have juice at the cdi with the key on?
have you checked continuity in the wires?
 
no ground to the motor

if there is a separate fuse wire make sure its attached to the
positive terminal  and while your at it check the fuse.

oilyhans

[LaserProbie]

Ok so I got spark now.
Had to replace the fuel buff or whatever it's called.
Got it to start finally. But the spark plug keeps getting covered in oil. So it starts idles up some, then idles down and dies. So I'm going to replace the spark plug and I am going to do a leaner fuel oil ratio and see if that doesn't help.

[harry]

Ok so I got spark now.
 But the spark plug keeps getting covered in oil. So it starts idles up some, then idles down and dies. So I'm going to replace the spark plug and I am going to do a leaner fuel oil ratio and see if that doesn't help.

 why are you mixing oil in the fuel?  that scooter has a oil injector, &
you don't want to disable the pump because it pumps oil to the main bearings.

if you want to add some oil to the fuel use some 100/1 oil and add 1/2 to 1 oz  to the tank
i do that with 70cc kits but never on a stock scooter.

 oilyhans

[LaserProbie]

The cable is broke. So I'm pre mixing.

I got it to start. I was running it attempting to be able to rev the engine up. It suddenly stopped sparking on me again. And the starter motor is not engaging when activating handlebar switch. I took a look at the relay switch and it appears to have burned up. Any ideas on how that could happen?

Stupid question: can you put the stator in backwards?

[harry]

no  you can't put the stator in backwards.

do you have a battery in the scooter? running without one
can blow electrical parts.....

starting the scooter with a car battery or hooked up to a car charger
can blow parts too...usually they are 4-6 amps 

also a bad regulator can mess stuff up.

oilyhans

[Talvesh]

Good to know you can't put a stator in backward.  I've been trying to get my 06 laser to start again for a few weeks and wasn't sure if I might have messed something up when I replaced the stator.

I wasn't getting spark, until I replaced the coil and stator.  Now I can hold the plug up against the outside of the cylinder wall and clearly see I'm getting a spark, but when the plug is installed, all I get is a cranking engine.

I've even shot a bit of starter fluid into the cylinder before installing the plug, and it doesn't even seem to ignite that.

====

I would definitely say check your kill switch if you're  not getting spark and you've replaced all those parts.  One of the things I checked on mine, and I found that it had gotten dirty enough inside the switch to bridge.  Just hit it with a little of the aerosol electrical parts cleaner and it took care of that for me.  Hope you can get it going.

[harry]

usually i just spray starting fluid in the air intake on the box....
 by the time you put back in the plug and wire then start it up
the fluid may have dissipated  or run past the rings
plus ..
i don't  think spraying directly  in the cylinder is good 
you are stripping all the oil off one side of the rings ,piston and cylinder

oilyhans

[Talvesh]

I was doing it that way, but as I've been constantly removing the plug, I started the direct shot method to save a little time. Hadn't though about the fact that it would be disolving away all of the oil. Guess I'll go back ti the air filter just to be safe.

Regardless, I still can't figure on why it wont kick over. I'm going to get a conpression tester and see what I've got, but my gut is telling me it's okay there.

[harry]

put your thumb over the plug hole and crank it over
if it pops off you have over 100psi  which should be enough
 
oilyhans

[Talvesh]

Compression seems fine after checking.

If the compression is good, and I have a spark, and I am supplying fuel, then what else is there to check?

Everyone is telling me that the timing is fixed and nonadjustable, but is there any way this could have gotten thrown off when the motor seized?

[harry]

you would have to shear the key
on the stator side for the flywheel to move on the shaft
which would put the spark out of sinc.

so you will have to remove the flywheel to check it

HOWEVER since you just worked on the piston
i might suspect the piston is 180 degrees off
and the port in the piston skirt is not aligned with the
port in the cylinder.
 
when you installed it did you have the arrow on the
piston point to the exhaust?

oilyhans

[Talvesh]

Took a look through the spark plug port just to check, and the arrow  on the piston head is pointing towards the exhaust.

What would I be looking for under the flywheel?  I had that apart to replace the stator, and I didn't see anything that jumped out at me as being broken.

[harry]

the flywheel has a slot  that locates it on the crankshaft.
the crankshaft has a "key" or bit o metal that sticks up that
fits the flywheel slot .
as long a the key is there and its not damaged  you are aligned
right.

  how about air leaks in the intake system?

oilyhans