Failed Emissions HELP
- Thread starter NOWAY55
- Start date
QUICK STORM
B.A.M.F. BMW Tech
Re: Failed Emissions HELP
i would change fuel pressure, maybe lower it.
i would change fuel pressure, maybe lower it.
Last edited:
It's just a six
Super Member
Re: Failed Emissions HELP
If you go too low you will get a lean miss.
Repost:::::
I had a problem passing mine last time also.
It to, was running great.
I bought a can of stuff @ Auto zone for passing smog. Not sure if that did anything.
But,,, I had also changed my plugs, car & rotor that had 11,000 miles on them.
Took it back for testing & it passed.
What is you fuel pressure set @?
I know on my truck, If I set it too low like, 38psi it would have a lean miss causing it to fail, bumped it back up to 42-43 psi then it passed.
Make sure to tell them to really heat up the cat.(AKA)light off the cat.
They hold the RPM's to about 2000 RPM for about five minutes,,, then do there testing.
If you just want to know if your Truck is going to fail or pass, w/out the DMV being notified, turn your idle up to 1200 RPM, but @ least you will know your truck will pass or not
.
If it looks like it will pass just turn your idle back down. but keep it close to 1000 RPM.
Good luck
QUICK STORM said:
If you go too low you will get a lean miss.
Repost:::::
I had a problem passing mine last time also.
It to, was running great.
I bought a can of stuff @ Auto zone for passing smog. Not sure if that did anything.
But,,, I had also changed my plugs, car & rotor that had 11,000 miles on them.
Took it back for testing & it passed.
What is you fuel pressure set @?
I know on my truck, If I set it too low like, 38psi it would have a lean miss causing it to fail, bumped it back up to 42-43 psi then it passed.
Make sure to tell them to really heat up the cat.(AKA)light off the cat.
They hold the RPM's to about 2000 RPM for about five minutes,,, then do there testing.
If you just want to know if your Truck is going to fail or pass, w/out the DMV being notified, turn your idle up to 1200 RPM, but @ least you will know your truck will pass or not
.
If it looks like it will pass just turn your idle back down. but keep it close to 1000 RPM.
Good luck
Last edited:
SeattleSy#1255
Category 5 Conservative
Re: Failed Emissions HELP
unplug the tan wire under the pass. side. and turn down the fp if you have a AFPR. baby it to the place, pass, and baby it back. It'll run like shit, but it'll pass.
unplug the tan wire under the pass. side. and turn down the fp if you have a AFPR. baby it to the place, pass, and baby it back. It'll run like shit, but it'll pass.
SeattleSy#1255
Category 5 Conservative
Re: Failed Emissions HELP
she's not there yet my friend...don't give up hope! But we are in for a nightmare if it happens. She plays moderate for apeal to public, but her radical lefty is waiting to come out. She's fake...go figure, a woman is fake.
jbonehead85 said:
she's not there yet my friend...don't give up hope! But we are in for a nightmare if it happens. She plays moderate for apeal to public, but her radical lefty is waiting to come out. She's fake...go figure, a woman is fake.
It's just a six
Super Member
Re: Failed Emissions HELP
If you go too low on your fuel pressure ,,,,you will get a lean miss & fail.
Ask me how I know?????
If you go too low on your fuel pressure ,,,,you will get a lean miss & fail.
Ask me how I know?????
QUICK STORM
B.A.M.F. BMW Tech
Re: Failed Emissions HELP
when CO is too high, this indicates that fuel mixture is too rich. ask me how i know, used to be a smog tech.
when CO is too high, this indicates that fuel mixture is too rich. ask me how i know, used to be a smog tech.
SeattleSy#1255
Category 5 Conservative
Re: Failed Emissions HELP
why dont you just unplug the tan wire and turn down the FP and go pass?
NOWAY55 said:
why dont you just unplug the tan wire and turn down the FP and go pass?
It's just a six
Super Member
Re: Failed Emissions HELP
Like I said before,,, if you turn down you fuel pressure too low you will get a lean miss & fail.
Also,, you do not want to advance your timeing,, you would need to retard your timeing.
That way it really gets your combustion chambers & valves hot,, so it will burn the unburned fuel.
Like I said before,,, if you turn down you fuel pressure too low you will get a lean miss & fail.
Also,, you do not want to advance your timeing,, you would need to retard your timeing.
That way it really gets your combustion chambers & valves hot,, so it will burn the unburned fuel.
SeattleSy#1255
Category 5 Conservative
Re: Failed Emissions HELP
I don't know what you think i'm saying...im' not saying turn down the FP to create misses and fail. What type of sense would that make. I just said turn it down.
Do a search on unplugging the tan wire and passing emissions. Plenty of people have had success doing it. Its not unpopular. If nothing else it worth a shot and is free. The worse thing that will happen is you fail again.
It's just a six said:
I don't know what you think i'm saying...im' not saying turn down the FP to create misses and fail. What type of sense would that make. I just said turn it down.
Do a search on unplugging the tan wire and passing emissions. Plenty of people have had success doing it. Its not unpopular. If nothing else it worth a shot and is free. The worse thing that will happen is you fail again.
It's just a six
Super Member
Re: Failed Emissions HELP
I am saying I turned down my fuel pressure to 37 PSI,I did not think it was missing, could not here it miss, but is showed up as a lean miss (on the printout) when smog testing it.
I am saying I turned down my fuel pressure to 37 PSI,I did not think it was missing, could not here it miss, but is showed up as a lean miss (on the printout) when smog testing it.
SeattleSy#1255
Category 5 Conservative
Re: Failed Emissions HELP
oh ok got it.
It's just a six said:
oh ok got it.