engine light on.got it checked said a small emistion leak.do i need a mechanic? on 2008 Chevrolet Aveo

replaced gas cap,changed oil,replace air filter

by in Tallapoosa, GA on September 11, 2011
2 answers 2 comments
ANSWER by , September 11, 2011
To find a leak in the fuel tank, fuel lines or charcoal canister a repair shop will use a "smoke machine" that generates an inert gas that locates the source of the small leak, or they may use a vacuum pump to test valves or even a scan tool to close valves and test them. Nothing you can do yourself.
COMMENT by , September 11, 2011
Pat when you say inert gas that is based on the tech using Nitrogen in the test procedure. Most techs do not use Nitrogen in testing with a smoke machine. When using a smoke machine with just shop air you are inviting a fire.
COMMENT by , September 12, 2011
thanks.
ANSWER by , September 12, 2011
yes, you better call for the help of a mechanic.