Hey guys

I bought a lisle "no spill funnel" after I changed my waterpump but it doesnt seem to work?
I attached it to my radiator and filled it up so 1/3 of the funnel is filled with coolant. But it looked like everything went straight down to the reservoir tank, I didnt notice this and started the car and coolant overflowed the reservoir completely.
Did i do something wrong? If the coolant gets hot it should expand in the attached funnel right and not bypass it to the reservoir?

 

Are you setting up the funnel incorrectly? Maybe you're using the wrong adapter - the first piece that is supposed to touch the radiator and form a seal. And yes, as the coolant gets hot it should expand up into the funnel.

 

After researching the only thing I did different is put the seal of the small part that goes in the radiator underneath the "nut" thats tighten down on the radiator. But that doesnt explain why everything got sent to the reservoir right?

 

What I suspect is you sealed the funnel to the top lip of the radiator filler neck rather than against the hole within or are not pushing the seal hard enough against the radiator body. A radiator cap has a dual seal, one against the body of the radiator and one against the lip of the radiator filler neck. The radiator cap has a spring within and once the pressure within the coolant system rises above the spring pressure, allows coolant to overflow into the chamber created between the two seals and out the overflow.

You need to seal against the radiator body not the top of the neck. The funnel I have doesn't have an adapter that fits perfect. I had to stack a few of the the rubber seals in order to get it to seat properly against the radiator body. You should be able to keep fluid in the funnel without it leaking into the overflow. If you can't, the seal is not correct.

 

That could explain it yes, so basically I just need to put the right adapter in my radiator how it suppose to be and then it works I hope.