Vacuum Leak Diagnosis Cost
RepairPrice Estimates are based on the estimated time for the repair, labor rates charged by trained automotive professionals, and prices for quality parts.
These estimates are designed to show a range of fair prices, instead of a single price, because there is more than one part that is appropriate to use in each repair, and more than a single mechanic who is qualified to do the repair.
Each estimate is customized for your vehicle and geographic area. Estimates exclude applicable taxes, diagnostic charges and disposal fees.
Vacuum Leak Diagnosis Estimate (National Average)
When locating a vacuum leak, we recommend using a smoke machine to find all of the areas that are leaking.
After all of the known vacuum leaks are repaired, we recommend performing a drive cycle test drive to verify that the air-to-fuel ratio has returned to normal.
When an engine has a vacuum leak, it may:
1. Idle rough
2. Be hard to start and/or keep running when cold
4. Hesitate under acceleration
5. Get poor fuel economy
The Check Engine Light may illuminate setting a P0171 or P0174 code, indicating that the fuel system is running too lean due to the vacuum leak.
Vacuum leak symptoms can be caused by a defective mass air flow sensor, ignition misfires, a defective idle air control motor, or a stuck-open EGR valve.