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Failed smog

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Offline oak_raid

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Re: Failed smog
« Reply #15 on: April 28, 2009, 05:19:19 PM »
The FSM just seems to jump around alot.  Like it tells you what to check, but not how to check it or where to find how to check it. 

Its probably just me trying to read it too fast.

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Offline ppltrak

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Re: Failed smog
« Reply #16 on: April 28, 2009, 08:55:17 PM »
Check Your EGR it is the main NOX reducer.
94 purple/green splash tracker w/ calmini 3' heavly modified lift 32 11.5 r15 bfg m/t's  & custom air induction and header w/ 2"exh. no cat lockrite rear 2" B/L and a heavy right foot and now 583s steel up front and locked.
2002 GV 2.5l 4.5 ZN lift locked on 31's

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Offline oak_raid

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Re: Failed smog
« Reply #17 on: April 29, 2009, 05:04:27 PM »
Taking it tommorrow to have diagnostics done on the engine.  I'll update this when I find out more.

Thanks for all of your advice.  Sometimes just typing out your problems helps, lol

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Offline oak_raid

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Re: Failed smog
« Reply #18 on: May 02, 2009, 09:59:30 AM »
Found out a few things.  First, I have no vacuum leaks.  The EGR is working.  The carb needs rebuilt or replaced.

Been looking at prices for carbs.....they are pricey!!

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Offline oak_raid

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Re: Failed smog
« Reply #19 on: May 03, 2009, 08:01:42 PM »
Picked up a rebuilt carb, still attached to the intake manifold.  since most all of the vacuum lines were already hooked up, figured it would be easier to change the whole intake rather than just the carbs. 

Put it on today, cant get the intake to stop leaking.  Gonna haveta take it back off tomorrow and start again cuz I broke one of the bottom studs trying to get it to stop leaking.    :o 

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Offline oak_raid

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Re: Failed smog
« Reply #20 on: May 04, 2009, 09:22:24 PM »
Well ok, I got the intake all fixed up.  I had thought the truck ran good before, but what a difference!  This baby is purring like a kitten now.  Gonna run some cleaner through the system and try smog again. 

Also picked up a set of 5 BFG LT tires from the same guy I got the carb from.  They look sweet!

Its coming together nicely.

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Offline Drone637

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Re: Failed smog
« Reply #21 on: May 05, 2009, 12:39:24 AM »
It's amazing how much of a difference a clean carb can make.  Good to hear it's back on the road.  :)
96 Geo Tracker, x-SJ-410,  x-White Rabbit, x-Project Trouble
Crawlers NorthWest
x-Trouble Racing

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Offline pershingd

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Re: Failed smog
« Reply #22 on: May 07, 2009, 05:12:27 PM »
As I was reading the posts, I was thinking the carb needed work. I was going to recommend replacing it unless you had the guts to rebuild it, but you beat me to it.

Glad to hear you got it running better - I hope it passes smog testing for you.

David
2001 Chevy Tracker (2 door, 2.0L, 5 Speed - itching for a lift)
1999 Ford E-350 Super Duty (15 passenger, 6.8L V-10)

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Offline oak_raid

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Re: Failed smog
« Reply #23 on: May 07, 2009, 09:04:33 PM »
yeah, it made a big difference.

I put some G2P in the tank and have been running it through the system.  I can still smell a faint odor coming from the exhaust, but I think it is the G2P.  At least I hope it is.  The truck seems to run better every day, the power is really coming back.  I have taken it on the freeway numerous times, and havent had any problem getting it up to 65 mph.  It would probably go faster, but I aint pushing it.

 I still get a little (very little) gray smoke from the exhaust at cold startup, but only if I race the engine up.  The brownish fluid I had talked about coming from the exhaust before is gone though.   

I have been doing some reading on the seafoam, and am wondering if I should do this treatment as well.....

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Offline oak_raid

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Re: Failed smog
« Reply #24 on: May 14, 2009, 10:01:13 PM »
just to update.....

Took it this morning to test only station.  It failed again, almost as bad as the first time.  Not a gross polluter, but close.  It failed every measured reading, HC CO and NOx.  Took it straight to a muffler shop and had the cat replaced.  I knew when he cut the old cat out I had found my problem.  It had absolutely nothing inside.  NOTHING, as in you could see all the way through it.  He put a magnaflow cat in and I took it straight back to the smog station and retested it.......

Not only did it pass, but the numbers were so low it was almost unbelievable.  HC readings at 15 mph was 0 and at 25mph was 4.  The NOx where i was originally a gross polluter at 2100+ was down to 13. 

So, I guess I should have went with my first instinct and replaced the cat right off.  $500 later I got it right  ::).  Went to DMV and picked up my plates and registration.  I'm good to go.....now on to the fun stuff!!

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Offline Drone637

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Re: Failed smog
« Reply #25 on: May 15, 2009, 02:10:26 AM »
Sometimes it is amazing how much of a difference a cat will make...
96 Geo Tracker, x-SJ-410,  x-White Rabbit, x-Project Trouble
Crawlers NorthWest
x-Trouble Racing