Car stumbles under load. All sparks plugs and wires changed. Then I noticed a hole on the under side of my vacuum check valve. Is this a normal thing. I can hear a hissing sound. Maybe a vacuum leak there? Is that hole supposed to be there? Look like over time the heat ate away the bottom layer of the valve.
have the same problem?
Friday, February 25th, 2011 AT 8:38 PM