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» Northern California Ford Owners     » Automotive   » Tech Talk   » Smog

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Author Topic: Smog
Wht86drop
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Whats the best way to lower Hydro Carbons? The car is a 4.6L 2V boosted but I dont know how much boost its pushing. Runs slightly rich but its barely enough for it not to pass. It has iridium spark plugs which I know runs hot but can it be an issue?

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Posts: 1669 | From: East Palo Alto, Fiji Islands | Registered: Jun 2012  |  :
Fostang
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Post your sheet and is the smog equipment all there including full cats?

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Posts: 3012 | From: Stockton/Danville | Registered: Nov 2003  |  :
jmcclesk
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quote:
Originally posted by Fostang:
Post your sheet and is the smog equipment all there including full cats?

what he said

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Posts: 4024 | From: marrysville | Registered: May 2002  |  :
Wht86drop
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I cant post pics but the car has 2 cats and all smog equipment is there just the egr is disconnected. Im going to connect the egr and the NOX will drop i know that. Im just like 60-100 points too high in HC which isnt too bad. Another thing is my cousin smogs my cars so he didnt run it with the actual test. He tested it in pretest mode or whatever. He told me i need cats but the car ran like shit when i got it and its 10 times better with just gapping the iridium plugs. I know iridiums arent supposed to be gapped but it was an experiment that worked. I was getting major spark blowout and it was at 60. Now its at 36 and runs great. Another thing is the intercooler pump is disconnected which i know is another issue.

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Posts: 1669 | From: East Palo Alto, Fiji Islands | Registered: Jun 2012  |  :
Wht86drop
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Just an fyi the car blew out black smoke when i hit the throttle and after i gapped the plugs it went away. Also i had the car tested after i did the plugs. No other changes yet

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Posts: 1669 | From: East Palo Alto, Fiji Islands | Registered: Jun 2012  |  :
NK2186
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high HC is caused from cats either not warmed up or not working properly. High NOX is cylinder temps which is something the EGR will help lower.

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Posts: 400 | From: Haystack | Registered: Aug 2012  |  :
Wht86drop
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I know but the car runs a little rich. Just enough for it not to pass. I wish i knew the cutpoint so i could figure out how much exactly is the HC too high. If anybody can check the cutpoint for HC in their smog book if its possible can you post it? It will help big time. The car is a 94 T-Bird with 4.6L and an Allen blower. I dont have a boost gauge so i dont know how much irs pushing

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Posts: 1669 | From: East Palo Alto, Fiji Islands | Registered: Jun 2012  |  :
hurting your feelings
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quote:
Originally posted by Wht86drop:
I know but the car runs a little rich. Just enough for it not to pass. I wish i knew the cutpoint so i could figure out how much exactly is the HC too high. If anybody can check the cutpoint for HC in their smog book if its possible can you post it? It will help big time. The car is a 94 T-Bird with 4.6L and an Allen blower. I dont have a boost gauge so i dont know how much irs pushing

Put the stock cats back on it.
Posts: 1830 | From: In front of the bank with a 45 an a ski mask | Registered: Jun 2014  |  :
Wht86drop
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Its got two cats already but they are high flow cats and i dont have the stocks for it. Its got shorty JBA headers too so if i do swap the midpipe ill have to figure out if the stock cats will mount to it. Looks like both sides of the headers have ball collectors or whatever its called.

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Posts: 1669 | From: East Palo Alto, Fiji Islands | Registered: Jun 2012  |  :
hurting your feelings
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Member # 13641

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quote:
Originally posted by Wht86drop:
Its got two cats already but they are high flow cats and i dont have the stocks for it. Its got shorty JBA headers too so if i do swap the midpipe ill have to figure out if the stock cats will mount to it. Looks like both sides of the headers have ball collectors or whatever its called.

If want it to pass put the stock cats on it.
Posts: 1830 | From: In front of the bank with a 45 an a ski mask | Registered: Jun 2014  |  :


 
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