When I press my brakes the truck idles up
and then starts running like crap and u can
hear air blowing while ur foot is on the
brake is that a vacume leak or what?
Yes check all your vacuum hoses from the master cylinder to the motor
(The brake booster)
You going to need a brake booster. If it looks like the rear of the master cylinder has been leaking into it the you'll need that too
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