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thelrgkid
08-23-2009, 11:37 PM
i just took my car to get smogged and my numbers came back for the NO (PPM) as 3368 and the max is 704. andone have any sugestions on how i can lower my emissions and maybe clean my engine or how i can check my fuel ratio or vacum test for leaks??
devnull
08-24-2009, 03:29 AM
What were your other numbers? HC PPM, O2%, CO%.

High NOx could be problem with EGR, catalytic converter, or carbon buildup on the pistons.
thelrgkid
08-24-2009, 04:17 PM
cool, anyone know how i can test my egr valve to see if its working and how do i clean the carbon build up?
LayNLow
08-24-2009, 04:45 PM
Seafoam will clean the carbon buildup out. Just follow the directions on the can.
thelrgkid
08-24-2009, 05:34 PM
Seafoam will clean the carbon buildup out. Just follow the directions on the can.


thanks, any one know how i can check my egr valve to see if its working???
thelrgkid
08-25-2009, 06:31 AM
Morning Bump!!!
miklos
09-13-2009, 01:00 AM
thanks, any one know how i can check my egr valve to see if its working???
Use a vacuum pump. The car should stall.
modulation
10-11-2009, 08:48 PM
i just took my car to get smogged and my numbers came back for the NO (PPM) as 3368 and the max is 704. andone have any sugestions on how i can lower my emissions and maybe clean my engine or how i can check my fuel ratio or vacum test for leaks??

That high of Nox and I'd suspect you have a Pre-Cat exhaust leak, or hole some where.
miklos
10-12-2009, 05:19 AM
I'm gonna drop it off at a gold shield mechanic shop.........it is too frustrating at this point. I'll let you know
s14canyoncity
10-12-2009, 06:21 AM
Seafoam will clean the carbon buildup out. Just follow the directions on the can.


never tried seafoam does it really work?
zenki.life
10-12-2009, 11:12 AM
never tried seafoam does it really work?

yes, it does. but its the same sorta as driving the ever living piss out of it on the freeway just before a smog.
thelrgkid
03-03-2010, 07:02 AM
It's been a while but here is some info on the smog business. On a dohc the lower timing chain cover has a little box to the left of it. This is your pcv and the hose on the back conects to the underside of the upper intake manifold. Min was broken... Vac leak=fail!
Sea foam does work. Carbon build up causes nox to spike! TIMING AT 18 BEFORE TDC!! there are also a bunch of small vac hoses on the back of the head.. Check em!!


MY PROBLEM (I hope) my upper timing chain tensioner was dead. Loose timing chain... Off timing... Also when I tore down the engine I cleaned the pistons!! Hella carbon!! Yup so lmk of you have smog questions. I been in it for 6 months. I might be able to help.