PDA

View Full Version : Fail Emmission.


honda1982
09-21-2005, 09:50 PM
Well, I took my car to get it test and it Fail. I probably need to lean my VAFC out a little and change the spark plugs.
This is what it fail in
Readings: Limits:
NOx 3.7108 3.0000
CO 21.7199 20.0000
HC 2.4692 1.2000

High CO readings occur when the A/F mixture is too rich. (just need to lean out the VAFC a little)
High HC readings are result of unburned or partially burn fuel. (new spark plugs and lean out the VAFC should help)
High NOx reading are the result of high combustion temperatures and or high combustion pressures. (No clue how to fix this)

Can any1 help with this? someone told me to add some alcohol in the fuel system so it burn cleaner.
It's a 96GSR turbo 6psi

HuNgiEbOi
09-21-2005, 11:39 PM
yeah acholol makes it burn cleaner...make sure you test in the morning...warm up cat conv. don't fill up and get an emission test.....ummm your timing can a play little part in your high hc reading also.....key thing is make sure they don't boost your car when they're driving it....I have seen so many cars fail because they boosted the car...boost = more gas = higher hc/co readings...yeah lean out vafc too that's help...any other questions pm me...