Will a bad water pump cause your car to burn high HC during smog test?

Answer 1

That should not happen. Perhaps the NOx can go high from excess heat. The water pump only circulates water in the cooling system. If the water pump IS bad, replace it, but there are other problems. Bad valves and rings can cause high HC. Damaged exhaust or intake manifolds can affect the fuel mix. A weak spark can cause high HC. See what trouble codes come up with an OBD2 code check to eliminate 1000 guesses.

Answer 2

No not at all.....unlesx engine is overheating

Answer 3

No, and if you had anyone tell you this walk away.

Answer 4

No. One has nothing to do with the other.

Answer 5

No. HC is Hydrocarbons. It's an indication that your engine is running rich/burning too much fuel.

Answer 6

No, elevated temperatures cause high NOx.