| Author | Message | ||
     Badlionsfan |
I ran my 94 Nissan 4x4 winter beater to get tested today and it failed the NOx part of the program. I've done a little reading on NOx, and it looks like a high combustion temp causes this. I'm thinking running a high octane gas should bring it down. Any other tips/tricks? I've heard about the CRC emission test formula additive, but don't know much about it. | ||
| Nik |
Clean out the EGR, and make sure the timing is set correctly. | ||
| Johnnymceldoo |
I thought Ohio did away with emissions testing? | ||
| Badlionsfan |
No, we just don't have to pay for it any more. Emissions testing is now funded by the money the state got from the tobacco settlements. | ||
| Natexlh1000 |
Back off on the timing a little. Hot combustion = Nitrogen being involved. You can put it back after you get your badge of merit. | ||
| Badlionsfan |
Time to invest in a service manual for this thing. | ||
| Aesquire |
Hi test gas may stop ping, so maybe ( only maybe ) it will lower your NOxides, by lowering combustion pressure... but timing is a more likely fix. Clean the EGR & make sure the check engine light works right. If someone talks you into trying pouring water into your motor... just use a spray bottle & be mellow. Good thing few cars have downdraft systems anymore. It was funny to watch guys pour a pint of water into a carb on the old cars to "loosen the carbon" with the steam.... there's a reason modern cars don't have water injection like WW2 airplanes. |
