my 1999 grand prix is sucking alot of air so bad you can hear it causing car to run real bad or not stay runing at all tryed finding vacum leak but no luck
Thursday, June 3rd, 2010 AT 4:36 PM
1 Reply
BLACKOP555
MECHANIC
10,371 POSTS
Best way is definetely a smoke test that a shop can perform. But for you on your own it can be attempted by spraying around the intake hoses, faccum lines, throttle body gasket and the upper and lower intake manifold gasket with starter fluid or carb cleaner. The area when sprayed that changes idle is where the leak is