Small Amount of Fuel or Oil in Airbox By lileria (Read 1,910 times)

[lileria]

Right, I'll check up on those. I was just reading about gear oil - apparently GL-03 is obsolete? GL-03 is what this particular scooter requires. What gear oil would you recommend if I need to replace the oil?

[Alleyoop]

You have a chinese 150cc scooter with most likely the 157QMJ motor it is very common motor which by the way is the motor I have in my trike.
USE any good brand 10w40 oil I use CASTROL GTX 10w40 oil myself.

Gear Oil I use 80x90 Vavoline gear oil it only take 6 ounces in the tranny.
Alleyoop

[lileria]

Mar 17, 2016 15:24:15 GMT -6 Alleyoop said:

If it needs some throttle to start that means the mixture of fuel to air is not right. When trying to start does it fire OR does it CRANK CRANK CRANK and then maybe fire??

If it cranks without firing STOP and take the plug out and see if it is WET OR DRY so we can find out if it lacks fuel or to much fuel.

Alleyoop

Yes, when trying to start, it cranks and cranks without firing. The times that it does start by itself, without giving it throttle, it idles for a second, then shuts off. Only when giving it throttle does it actually start and starts the idling process.

Also, it there a way to check if the gear oil is indeed low? I don't see any gauges around that lets me know. Thanks!

[Alleyoop]

Ok, stop after a couple of cranks and TAKE THE PLUG OUT, see if it is WET OR DRY. We need to find out if it is getting to much fuel(FLOODING THE PLUG) or not fuel.

There is no way to check the tranny oil, drain it and add 6 ounces.

[lileria]

Ok, I've just purchased the necessary oils (gear and engine). I did as you suggested and removed the CVT cover and took a look around. An interesting find in there. The gasket (I'm assuming) seems to have been disintegrated, the inside of the cover is black. There was burnt up material stuffed inside a small rectangular hole leading out of the cover:





That black portion of the material seems to be rubber. I'm wondering what can cause such immense heat in that section. I haven't been able to drain the gear oil yet. I'll be doing that and having a look at the spark plug in a few hours. I'll update as soon as possible!

Some more photos

[Alleyoop]

So the gasket may have blocked the air from getting out and created a lot of heat inside so clean it all out and make sure the inlet air inelt is clear and the back is clear some also have a outlet on the bottom of the cover.

[lileria]

I'll definitely be cleaning it out. What could have caused the gasket to break apart?

[Alleyoop]

The gaskets fall apart most of the time when you take the cvt cover off. Also the heat makes them brittle . The best thing is to just take the gasket off NOT NEEDED, it does nothing but break apart when taking the cvt cover off.
Alleyoop

[lileria]

All the gasket material has been removed from the CVT cover, and it's completely clean now - It's been difficult getting the CVT cover back on though - but after doing so, I gave it a few kicks (just to check it's functionality which isn't feeling so normal right now). After kicking it a bit, I went to check the oil dipstick, and oil came pouring out of the hole and all over the ground.

This was fresh oil I just put in a day or two ago. Why does it keep coming out like this?

[cyborg]

Quite possibly an overfill issue

[Alleyoop]

WHen you changed the oil was the scooter on the center stand AND ON LEVEL GROUND if going downhill you overfilled it.
If it was on level ground then you either overfilled it or gas is mixed in from trying to start the motor and caused the overfill. SO smell the oil and see if you smell gas, if so you need to change the oil.
Alleyoop

[lileria]

I was on level ground as far as I can tell, in a garage with the center stand on. I can definitely say I didn't overfill it either as there was a small amount of oil left in the bottle anyway. I was going to top it off earlier until this happened.

When using (kicking) the kickstart, does this turn the motor, hence allowing gas to mix with oil? Is this a standard, normal response? It's a bit aggravating to think that every time I go to start this scooter (and it fails), I'm going to have to change the oil, haha.

[Alleyoop]

Did you use the DIPSTICK to see if it was full or did you just fill the sucker up to the top?
From what you just said you overfilled it. Out of a quart of oil you should have 1/4 left of oil out of the quart.

Also if a scooter is hard to start for some reason that can cause gas to get into the crankcase and create a overfill situation. But that requires a lot of kickstarting and or cranking without the motor starting.
Alleyoop

[lileria]

I always check the dipstick after filling and there was such a minuscule amount at the very tip of it. The oil had been completely drained from the scooter first, and the bottle of oil I had was nearly out. It only reached the very tip (barely) of the dipstick.

[Alleyoop]

So that means it overfilled up with gas dripping down from cranking and not starting.
Just smell it it will smell from gas.