Turbo Buick Forums banner
1 - 6 of 6 Posts

·
Registered
Joined
·
61 Posts
Discussion Starter · #1 · (Edited)
Man I just failed my emissions test today. I had a feeling that it might happen, but I was hoping that I would be relieved, and I obviously wasn't.

Here are the test results:

1. Gas Cap Check (Pass)

2. EVAP Components (Pass)

3. Hydrocarbons (Fail)
My Car registered at:2.50 (g)
State applicable: 1.60 (g)

4. Oxides of Nitrogen (Fail)
My car registered at: 3.43 (g)
State applicable: 2.50 (g)



From reading the numbers, what should I have done to my car so that it will pass the 2nd test.

I know for a fact that I need to have the spark plug wires connecting to the correct spark plugs. I had a feeling that they weren't in the correct sequential order, and when the guy at the emissions gave me the list of problems that I may be having, one of the reasons was the problem I just mentioned.

Other problems could be the catalytic converter, etc... I'm sure you guys know more about this stuff than me, so I am asking advice as to what I should be looking to have repaired before my next test.

All advice is appeciated.

Thanks
 

·
Fuhgeddaboudit
Joined
·
18,613 Posts
You need to get results with a good tuned running motor. That includes plug wires on correct. Also to help you we need to know your setup, chip, inj, etc. Is this a Turbo Buick? no car listed either?
 

·
Registered
Joined
·
2,098 Posts
If plug wires were switched, it would run really rough, and probably get much higher readings on unburned HC- if the car is a turbo Buick. The coilpack has numbers for the wires, so it's pretty easy to check.
 

·
Registered
Joined
·
2,347 Posts
get the engine running correctly then go back. that should fix your HC problem. as for NOx it could be as a result of that or it could be from a non-functioning EGR system. NOx is caused by high cylinder temperatures, and the EGR will help cool the cylinders down to reduce the amount of NOx
 

·
Registered
Joined
·
61 Posts
Discussion Starter · #5 ·
ULYCYC said:
You need to get results with a good tuned running motor. That includes plug wires on correct. Also to help you we need to know your setup, chip, inj, etc. Is this a Turbo Buick? no car listed either?

Sorry about that, it's an 87 Grand National
 

·
Resident Slut
Joined
·
5,477 Posts
thepremier said:
Sorry about that, it's an 87 Grand National
OK what are the rest of your mods..chip, inj, turbo, yad, yad , yad :dunno:
 
1 - 6 of 6 Posts
Top