will a bad water pump cause your car to burn high HC during smog test?
- The DevilLv 710 months agoFavourite answer
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.
- 10 months ago
No not at all.....unlesx engine is overheating
- DanLv 510 months ago
No, and if you had anyone tell you this walk away.
- ScottLv 710 months ago
No. One has nothing to do with the other.
- What do you think of the answers? You can sign in to give your opinion on the answer.
- JetDocLv 710 months ago
No. HC is Hydrocarbons. It's an indication that your engine is running rich/burning too much fuel.
- L.N.Lv 710 months ago
No, elevated temperatures cause high NOx.