Author Topic: How to Pass Smog (Read 262753 times)

Goose · « **Reply #150 on:** Feb 05, 2008, 10:05:11 PM »

Quote from: Plekto on Jan 04, 2008, 02:39:19 PM

This is why I just go out and get the $30 Bosch one at my local mom and pop auto parts store.

Ive heard the universal bosch's are a big no-no...
I guess they dont read right for toyotas like the oem ones do or somthing...
idk, ill have to look it up. Theyre way cheaper but i heard theyre bad...

emsvitil · « **Reply #151 on:** Feb 05, 2008, 11:26:14 PM »

I'm using a Bosch with no problems

I did however upgrade it to a heated 3-wire...........

drabnor · « **Reply #152 on:** Feb 06, 2008, 11:41:15 AM »

Hey guys, I could use a bit of help with my '86 22rte 4runner, my first 22r series yota. It failed a pretest yesterday. First thing that surprised me was the timing, with the terminals shorted its at 15 * BTDC, unshorted its about 22* advanced

So I figure thats my first thing to do is to time it correct. Heres the #s it got:

test ------ rpm --- HC max --- HC measured --- CO max --- CO measured --- NO max --- NO measured

15mph --- 1761 --- 131 ---------- 67 ---------- .87 ---------- 0.00 -------- 1085 ------ 1868(fail)
25mph --- 1727 --- 103 ---------- 52 --- ------1.10 ---------- 0.00 -------- 1120 ------ 1933(fail)

notice the complete lack of CO and the high NO... would the timing so far out of whack cause the high NO?

its got new plugs/wires, i seafoamed it about 500 miles ago, running 87 octane.

it also failed CA's new evap system test so i plan to replace all the hoses in the system.

tia for the help!

Goose · « **Reply #153 on:** Feb 06, 2008, 02:06:40 PM »

Quote from: drabnor on Feb 06, 2008, 11:41:15 AM

it also failed CA's new evap system test so i plan to replace all the hoses in the system.

details on that :bull crap: ??

Hows the sea foam work for you?
I usually dump some propynal alcohol (Spelling?) in a fresh tank every few months... cleans the valves and what not nicely..

How old is the cat?

drabnor · « **Reply #154 on:** Feb 06, 2008, 02:36:18 PM »

Quote from: Goose on Feb 06, 2008, 02:06:40 PM

details on that :bull:pokinit:: ??

Hows the sea foam work for you?
I usually dump some propynal alcohol (Spelling?) in a fresh tank every few months... cleans the valves and what not nicely..

How old is the cat?

its a new test they just started doing on the 1st of Jan, pressure tests the entire evap system, if it doesn't hold x pressure for x time you fail

seafoam worked great, suck it into the throttle body and it cleans the intake tract/combustion chamber of carbon, also put it in the gas to clean the injectors

unsure of the cat's age, its prob original as well as the o2 sensor...

i plan on changing the o2 just to be sure. something is making it run lean, very lean ~15.7 a/f ratio

emsvitil · « **Reply #155 on:** Feb 06, 2008, 05:36:50 PM »

NOx goes up with advanced timing. Back off the timing to 2-3 degrees BTDC (spec is 5 BTDC and you're allowed +- 3)

Goose · « **Reply #156 on:** Feb 06, 2008, 07:35:40 PM »

Id definetly replace the cat.
Sometimes a brand new Nice n hot cat can burn off.. or hold back, alot of nasty stuff.
The o2 sensors are spendy, but well worth it.
Espesially if its running lean like that..
14.7's perfect right?

drabnor · « **Reply #157 on:** Feb 07, 2008, 12:49:36 PM »

Quote from: emsvitil on Feb 06, 2008, 05:36:50 PM

NOx goes up with advanced timing. Back off the timing to 2-3 degrees BTDC (spec is 5 BTDC and you're allowed +- 3)

Thank you! I'll give it a shot and see what happens...

Plekto · « **Reply #158 on:** Feb 12, 2008, 05:05:46 PM »

Quote from: Goose on Feb 05, 2008, 10:05:11 PM

Ive heard the universal bosch's are a big no-no...
I guess they dont read right for toyotas like the oem ones do or somthing...
idk, ill have to look it up. Theyre way cheaper but i heard theyre bad...

I think for a 22RE, they are fine if you get the right one. It was the only one listed in the computer and the item looks identical to the OEM as well.

Other types that plug in near the cat are a whole other story, you're right. All I know is I passed smog, if barely. NOx is O2 sensor most likely of if you're running stock exhaust, look for leaks and cracks near the sensor.(also cat, but O2 is usually much cheaper and you're not far off.

superyota · « **Reply #159 on:** Feb 20, 2008, 09:39:41 AM »

any idea if the smog year will ever change again?

Plekto · « **Reply #160 on:** Feb 21, 2008, 05:00:26 PM »

Whenever Feinstein and Boxer leave office. They hate diesels and old cars with a passion.

P.S. The real reason they sued the EPA for stricter limits was because they want to keep the Mercedes bluetec and other similar lean burning diesels out of California. It doesn't matter to them if you could suck off of the pipe and get cleaner air than by opening the window - they are on a mission to get rid of every last one.

Thankfully the EPA kicked them in the shins.

kneedownnate · « **Reply #161 on:** Feb 21, 2008, 05:32:37 PM »

Quote from: superyota on Feb 20, 2008, 09:39:41 AM

any idea if the smog year will ever change again?

Doubtfull, they're already up to years that started to have a decent amount of smog control crap.

Orowheeler · « **Reply #162 on:** Feb 21, 2008, 08:53:46 PM »

my 22re is completely rebuilt and i didn't pass smog because of my o2 sensor i from a pick and pull. so it is worth spending 100 bucks for a brand new one.

davidr34 · « **Reply #163 on:** Mar 10, 2008, 01:32:56 PM »

to get the hc down, retard the timing correct? And can anyone send me some pics of where the 2 hoses go from the a/c line? ive look at the diagram i just can figure it out. thanks

fordh8r · « **Reply #164 on:** Mar 10, 2008, 03:34:26 PM »

Quote from: davidr34 on Mar 10, 2008, 01:32:56 PM

to get the hc down, retard the timing correct?

BUT! You can't be more than +/- 2 degrees from the spec.

emsvitil · « **Reply #165 on:** Mar 10, 2008, 03:43:32 PM »

You retard for high NOx.

HC & CO are the opposite, so I think you advance a little

Misfit4Runner · « **Reply #166 on:** Apr 17, 2008, 03:49:20 PM »

well i tried to get my runner 3.4 smogged and blew over 200 points on my NO at 15mph. so i sprayed a half can of STP choke and carb cleaner (sensor safe) in the carb and a pint of rubbing alchol in the tank and knock off my air cleaner. 20 min later I passed 293 out 512 at 15mph and 222 out of 765 at 25. im not sure if guy at the 1st place was a complete yahoo or the carb cleaning and alchol was what did it. I was gonna change the oil but after 120 on smog tests I said to hell with it.

superyota · « **Reply #167 on:** Apr 18, 2008, 09:58:04 AM »

3.4 with a carb?

Duffil · « **Reply #168 on:** Apr 18, 2008, 09:43:06 PM »

Quote from: superyota on Apr 18, 2008, 09:58:04 AM

3.4 with a carb?

i think he means he sprayed carb cleaner in the throttle body

85toyrunner_rockrig · « **Reply #169 on:** Apr 29, 2009, 05:24:41 PM »

i love living in SW colorado, no smog req.

johnstrings · « **Reply #170 on:** May 01, 2009, 06:50:39 PM »

Thanks...

That is VERY informative...

potter85 · « **Reply #171 on:** May 25, 2009, 08:08:15 PM »

smog is just another way to drain money from people....It has a great idea behind it but unlike what everone assumes not all smog comes from cars. I dont see grandpa smogging his tractor every 2 years... Same with laws like the beadlock law... They enforce it for the money

86rustbucket · « **Reply #172 on:** Jun 07, 2009, 02:22:17 AM »

yes smog is bull crap.go smog your black n white piggy

86rustbucket · « **Reply #173 on:** Jun 07, 2009, 02:30:21 AM »

iv had good luck by filling up with chavron 91 and a bottle of berrymans fuel system cleaner.run out most of the tank and go to the smog shop with the engine goog and warm and let the engine idle while your waiting

usmc4runner · « **Reply #174 on:** Oct 07, 2009, 09:10:30 AM »

Im in atlanta and i failed horribly the first time.. popped a vacuum leak and passeed she did

superyota · « **Reply #175 on:** Oct 16, 2009, 04:10:39 PM »

just took my 90 4runner with 3.0 in for smag today and it failed horribly. i put new ngk plugs in it yesterday, new cap/rotor/wires, 91 octane chevron, and 1 bottle of rubbing alcohol, cleaned the air filter(k&n), turned the idle up to 1000 rpm, and also retarded the timing 2 deg. Also used a infrared gun today to check the temp before and after the cat and it was almost 100 deg. hotter after the cat, so i'm assuming its working right. here are the numbers:

%CO2 %O2 ( HC----------PPM) (-----------CO%-----------)
Test RPM MEAS MEAS MAX GP MEAS MAX GP MEAS Results
Idle 991 11.32 0.5 120 270 2376 1.00 2.50 4.92 GROSS POL
2500 RPM 2683 12.26 0.2 180 330 324 1.00 2.50 3.97 GROSS POL

GP=Gross Polluter Limits
MAX=Max Allowable
MEAS=Amount Measured

any suggestions? just went to dmv and got a 30 day pass for it.

Pat · « **Reply #176 on:** Oct 16, 2009, 04:58:37 PM »

it is running extremely rich.. Check you efi system.. It is so rich it is causing the Hc to be extremely high.. Does this truck seem like it even runs good? High hydrocarbons mean you are in a misfire condition when it is that high..

Most EFI toyotas when running correct are close to .00 to .03 on the co% even if you took the cat off

superyota · « **Reply #177 on:** Oct 16, 2009, 05:13:03 PM »

runs a little rough at idle. but off idle it runs great. i still havn't figured out why it runs ruff. do you think a new cat would even come close to cleaning it up?

Pat · « **Reply #178 on:** Oct 16, 2009, 05:20:52 PM »

no, not running that rich.. You either have a real issue with way too much fuel or a cylinder that needs attention.. Do a compression test before you go to crazy in the troubleshooting ares.. Does it use water at all?

how many miles are on this motor?

superyota · « **Reply #179 on:** Oct 16, 2009, 05:26:00 PM »

no, the old motor had bad gaskets, just replaced it with one i got off priate from a guy in placerville, supposed to have 110k on it. it was in his 4runner and it was his daily driver. ran great. he pulled it out after i paid for it. doesn't use any water, or oil. i'm wondering if the old motor with bad gaskets and buring oil could ruin the cat, but if it won't lower the emissions, i don't see the point of changing the cat. i'll try a comp. test. thanks for the info. i'll keep posted.

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