An auto parts service man listened for a hissing sound and found none. Is there a better way on a '94 6 cylinder model. Thanks.

 

Trick I use for checking for vac leaks is to get a can of carb/tb spray cleaner and spray the suspected vac hose, if the engine starts to run rough it's sucking in the cleaner. I have also done the same thing with a unlit propane torch, if the idle picks up, you found it.

 

thats a cool trick! i woulda never thought of it. im gunna use that to find leaks from now on.

 

Ya it works good on the intake manifold to check to leaks.