Q: Q: Failed smog check

asked by on

I failed my smog check. The technician pointed out a radiator leak and also a weird clicking noise coming from the exhaust.

Neither of these issues should cause you to fail a smog test. Smog test look at your cars emission output. The radiator might be leaking and need to be repaired but it has nothing to do with your emissions. The clicking noise form the exhaust is usually heard when the engine is first turned off after it has been driven and is pretty hot. It is the normal noise of metal cooling off slowly and again has nothing to do with your emissions. Consider giving YourMechanic a call to help diagnose your exhaust’s clicking noise as well as help you repair your coolant leak.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Q: Failed smog check

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car is running hot but I put coolant in it

If you are full of coolant but are overheating then you either have a broken cooling fan or a thermostat that is stuck closed. If the fans are coming on then the most common failure will be the thermostat. ...

Q: Q: A/C

I'm not entirely clear, but I believe that you are saying that your AC is not working, but your concern is not with the AC but that the lack of a condenser fan will cause the car to overheat. Some...

Q: Why does my car "skip" when I accelerate from a complete stop

Hi there. Typically when an engine 'skips' it is due to an ignition misfire. All combustion engines have a firing order in which each cylinder is designed to complete the combustion process in a certain order. The "skip" occurs when...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...