does anyone know how to do this or is there a video out there for it any help would be awsome

 

Ummmmmm..... What?

 

ok what im trying to do is see if there is exaust gas in my collant and someone said that u can use a bottle and check it that way my xj is overheating and cant figure out why it has been completely rebuild with everything new

 

You can use a bottle as long as it has Jack Daniels written all over it....

 

Go buy a test kit. It's like $30

 

i dont understand on how to do it and im stuck an hour away from my house and auto zone closed hrs ago

 

If your on your phone search YouTube.

 

ya all it comes up with is stupid water bottle tricks like making a toranado

 

Then it must not be legit.... I have never heard of it

 

Search "block Check".