Coolant Issue

[Ruffus]

One thing came in my mind!
Did you check/renew all  fuses?

If yes and okay, then interchange relays

Thermoswitch: both cables off, connect them with a paperclip or similar
-ignition on, fan should kick in
-kicks in = thermoswitch faulty

[agilebda]

Thanks Ruffus.
Checked the fuses today and all were fine. Not quite sure that I understand you on the relay paperclip test. Can you show me with this diagram attached? 

[Ruffus]

With everything in place, take this two cables which lead to your thermoswitch, off.
-connect them with a paperclip or short piece of wire
-ignition on
-fan kicks in?
If YES, your thermoswitch needs to be renewd.

With interchanging relays I meant, change horn relay with indicator, or otherwise to see whether they are ok, as far possible from connectors configuration.

[agilebda]

With everything in place, take this two cables which lead to your thermoswitch, off.
-connect them with a paperclip or short piece of wire
-ignition on
-fan kicks in?
If YES, your thermoswitch needs to be renewd.

With interchanging relays I meant, change horn relay with indicator, or otherwise to see whether they are ok, as far possible from connectors configuration.

Thanks very much. I understand now. Will give this a try tonight.

[agilebda]

Tried everything with no luck. Extremely difficult to pop that bleed screw or hose back on when the coolant is boiling hot.
I changed the thermoswitch. New relay. I'm stomped!

[Ruffus]

My last straw:
-is your repaired coolantpump really working?
There is the chance to block the impeller/bearing by wrong mounting or too much pressure when installing.

Is there the possibility something got into a hose, a piece of rubber etc.?

Open the thermostate housing, take the thermostate completely out, close again and try (pls see pic)

[agilebda]

My last straw:
-is your repaired coolantpump really working?
There is the chance to block the impeller/bearing by wrong mounting or too much pressure when installing.

Is there the possibility something got into a hose, a piece of rubber etc.?

Open the thermostate housing, take the thermostate completely out, close again and try (pls see pic)

Hello Ruffus. I will give this a shot. I'm pretty sure that the pump is working fine. When i revv the throttle up when bleeding the coolant, the stream pisses out stronger as the rpm increases. I have a new relay on the way. I will give it a shot with cleaning out the thermostat . One thing that I noticed is when the coolant gets hot, the radiator is cool as if the coolant isn't flowing through that area.
 

[Ruffus]

....the coolant gets hot, the radiator is cool as if the coolant isn't flowing through that area....

This might mean either the thermostate is blocking or some hose is clogged.

[agilebda]

Okay...so I've tried everything that Ruffus has stated and suggested. That fan still wouldnt kick in. How do I know if the head gasket isn't or is blown and needs to be replaced? I don't see any coolant dripping from the head gasket area. This is the only thing that I can think of which will prevent the fan switch kicking in.

[Ruffus]

If the headgasket would be shot., you would have steamy white emissions from your muffler.
Pls go from beginning everything through again.
-pump
-hoses
-fan direct connected
-thermostate out
-system pressure hosed through with waterhose
-radiator off scooter and hosed /rinsed
The culprit must be found.

[agilebda]

Hello All. Well happy new year to you all.
I gave it a try again after flushing the system with a medium pressured water hose. The fan motor kicked in at 108 degrees. Exactly what I was looking for, however it only kicked in for a maximum of 7 seconds. Could it be air still entering the system? I will tighten all hoses again and try.

[scooterfan]

I have no experience on scooters like your's but you need to make sure all hose clamps at the scooter's cooling system are still tight.
Hose clamps on rubber hoses tend to loose tightness over time and this causes water and air leaks at the cooling system. This causes air pockets which disrupt effective coolant flow, which causes uneven heat distribution - and this can cause a cooling fan to come on for a short period.

This actually has happened to my Silverwing. Some hose clamps have lost tightness over time and there were small water leaks. So small that I never noticed a coolant leak - the coolant actually evaporated due to engine heat and I never noticed anything.
When the engine cooled down afterwards air obviously got sucked into the cooling system at the hoses with loose hose clamps.

All engines normally run warmer if cooling systems are not properly pressurized. And loose hose clamps surely cause lower pressure and overheating problems at any given engine.