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Q: engine light on on 2007 Mazda Mazda6

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Advance Auto checked and said vap control system leak detected. Very small leak. What knd of money I should look tp pay?
Evaporative Emission Control (EVAP) system leaks are sometimes hard to find because they could be anywere in the system which has many components including the fuel tank and gascap. It's possible that your gascap is the source of the leak and is the easiest and cheapest part of the system to service. First thing I'd do is get the gascap checked by a mechanic with a fuel cap tester for use in emissions checks (or simply buy a new one - may be cheaper than getting one tested). If the cap is OK, and you're sure you are screwing it on tight enough, the leak is elsewhere. There could be a fault in the tank, a solenoid, vacuum line, gas filller tube, evaporative emissions canister, etc.. Therefore there is no way to estimate how much it would cost to repair the system. Get the car checked by an emissions or Mazda specialist. I'd suspect the gascap first, though.
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