Oil all over, vent tube off, sputtering... By skooter (Read 4,202 times)

[skooter]

I finally got my old scooter running and took her for a test ride. She ran ok at idle and rode fine. Then it started to sputter once it got warmed up and I noticed oil in the air box. I also noticed the vent tube on top of the motor near the carb was off and oil was on the end of the tube. It looks like oil is dripping from somewhere on the motor.

It smells like gas and oil in the air box

Any ideas what this could be? Or did the old scooter just finally give up after 13,101 miles?

It acts like it wants to crank over and start, but it won't start.

[Alleyoop]

Is the scoot a 50-150 what engine does it have. There should be a VENT hose coming from the Valvce cover and that should be TIED up HIGH so if it squirts oil out it can drain back down into the valve cover. I would take that hose out from the Air/Filter and do that.
Also check your oil level you do not want to run the engine with low oil ALSO do not overfill it.

Clean out your Air Filter I am sure it is all full of oil which will cause it to possibley flood the engine with to much gas, maybe that is what the problem is FLOODING IT.
Alleyoop

Do that and get back to us.

[skooter]

It is a 50cc VIP/Bashan thing

This hose is the hose that is connected near the carb. If you were sitting on the seat looking down at the motor it is to the right side of the carb.

I'll try and get a picture of it. I just drained the oil, and put new oil in, and I'm gonna put a new plug in as well.

It seems like some how oil and gas are flooding into the motor somehow.

It has a brand new carb on it, and it started and idled fine for several minutes. When i went for a test ride is when the problems began.

[skooter]

Here are some pictures of the vent tube i am talking about if that helps.

Is there a dummy plug on the air box, or do I have my vent tubes mixed up some how?

The tube located on the throttle cable side of the intake is the vent that popped off.

The vent tube that is connect to the valve cover/head was connected to the air box.

[skooter]

Another picture.

[Alleyoop]

Well that is your VACUUM Hose you need that connected and that goes to your PETCOCK Vacuum Nipple. What that does is when the engine turns over it creates suction and opens the Diaphgram in the PETCOCK to allow fuel to flow to the CARB. Did maybe you connect that to the wrong Place at the other END?

Where is that connected right now?
If no Vacuum is applied to the PETCOCK NO FUEL will flow to the CARB.
Alleyoop

[skooter]

Mar 11, 2011 21:25:45 GMT -6 Alleyoop said:

Well that is your VACUUM Hose you need that connected and that goes to your PETCOCK Vacuum Nipple. What that does is when the engine turns over it creates suction and opens the Diaphgram in the PETCOCK to allow fuel to flow to the CARB. Did maybe you connect that to the wrong Place at the other END?

Where is that connected right now?
If no Vacuum is applied to the PETCOCK NO FUEL will flow to the CARB.
Alleyoop

Thats a good question.

I'm trying to find a diagram of how the hoses should be connected, correctly.

Also i was thinking is it possible that a hose is clogged up and that is why the oil was going into the air box?

Near the muffler there seems to be some sort of canister that has a hose connected to it that goes towards to motor. i'm not sure what that does.

So basically if that hose near the carb came loose it would lose vacuum and the scooter wouldn't run right?

Also what oil and how much should be in the scooter? Maybe i over filled my scooter?

[Cruiser]

I don't know if this will help, skooter. It's a picture 'under the hood' of my VIP50. This is what it looked like straight from the factory:

[Alleyoop]

Skooter,
Yes if that Vacuum hose came off it would not get gas to the CARB.

The hose and canister on your PIPE is for emissions. Many people take those off and plug it up because they cause a lot of trouble.

Take a picture of your PETCOCK and hoses if you can. Also can you see gas inside the Fuel Filter. When you put the new carb on did you adjust it.
Alleyoop

[skooter]

Im going to try and post a few pictures. Maybe that will help everyone understand what i'm trying to explain. Im new to these scooters, but it is always nice to learn more.

I "think" i either have vacuum lines connected wrong, a plugged line, or maybe too much oil in the scooter.

It puzzles me because it ran fine for a period of time, it idled, revved up, etc. It was only on the test ride that I noticed any problems.

But...maybe that was because a vacuum line popped off?

Also i just noticed what appears to be a hole in the plastic tube from the carb exit to the air box. it's big enough to put a ball point pen into. That can't be good, haha

[skooter]

More pictures..

[Alleyoop]

Ok, Where is that HOSE on top of the PETCOCK connect to? If it connects to the NIPPLE on the INTAKE that is correct, but make sure it is NOT KINKED. From the picture it looks like it runs down then back up to the NIPPLE which would Bend it or Kink it.

I see couple places on the TUBE going to your Filter Box OPEN PLUG THOSE UP.
Alleyoop

[Alleyoop]

EM,
What does FRIDAY NIGHT HAVE TO DO WITH ANYTHING -- IS THAT WHEN THE EAGLE FLYS(HEHE).
Alleyoop

[skooter]

I'll try to get some better pictures tomorrow with a camera. My phone has no flash and quite honestly it takes bad pictures.

I'll check all the vents/hoes tomorrow and make sure everything is clear and secured without any leaks.

I'll keep checking and with the great help from this forum i will figure it out.

Thanks to all helping so far.

[skooter]

Im going to do an oil change and check all the vent tubes. Can the PCV valve/tube be cleaned?

If all else fails i guess im looking for a new motor or a possible top end rebuild.