Jonway yy250t won't start By cordinb (Read 3,024 times)

[Bashan]

If this:

Starts here:

It is your crankcase breather and has nothing to do with your cooling system. Put some kind of a filter in the end to keep dirt out of the case.

[cordinb]

Ok I took apart some plastic to find where the tube comes from. It seems to come directly from the coolant tank.



Some pics of the top. Maybe an arrow to where this tube goes?

[cordinb]

Dec 25, 2014 20:31:21 GMT -6 adamhoyer said:

Is there a T just like the 150cc scooters have with the vacuum lines?

I think so.

[cordinb]

I also took a look at the picture that you posted earlier (mpsracing.net/technical/helix-manual/12-00.html) and I can't seem to find where this tube goes into :\

[cordinb]

By the way, what is this thing?


It looks like a black plastic oil drum with two connections on the bottom, which have a tube in one connected to the radiator cap area and another which connects somewhere to the engine (I think). The top part of it seems to not be connected anywhere. Is this where the mysterious tube homes to?

[adamhoyer]

Might be the gas tank vent or the evap can, alley or bashan will know more about it then me, I don't mess with them cans a lot.

[cyborg]

part of the evap system

[cordinb]

Where does the tube coming from the cooling tank go to though?

[cyborg]

check that small hose thats on the coolant fill cap stem by your carb,,,that may be a replacement and is routed to the bottom of the bike and is running on the ground if there is a hot situation,,,,whoever modified the bike put that on there,,,i believe this is where your "extra" hose goes

[Bashan]

The one from the coolant tank is supposed to connect to the top of the fill spout. The big hose runs to the radiator. The hose with the reducer runs to your carburetor. At least that's the way it is on my vertical.

[cyborg]

I'd put a couple bux wager on that's where his original question of the coolant leak is coming from ,,, someone disconnected the coolant tank and made it straight dump to the outside ,, that's my guess

[cordinb]

Ok I believe I fixed it all, so far no leak and the engine is doing ok with staying cool