Author Topic: Sorry for another failed cali smog but my numbers are pretty high plz help (Read 2810 times)

eskimo19 · « **on:** Jul 11, 2013, 02:45:29 PM »

86 4runner Sr5 22re 5 speed stock failed cali smog fresh oil change guaranteed to pass stuff and air filter

I have a #5 stored code im guessing o2 sensor since the truck came from a no smog area and im sure none of that has been replaced. The truck seemed to run fine thats why i took it in but smog tech said my timing was at 15 and that was it. I am going to be doing plugs cap, rotor, clean egr, valve adjustment, fix the timing. any help would be appreciated if you think i should add something else. Just a broke Airman so dont have alot of money to be throwing around.

-----CO2---O2---HC-MAX----AVE----MEAS----CO-MAX----AVE----MEAS----NO-MAX----AVE----MEAS

15mph----14.2---0.6-------131--------60----148----0.61---------0.08----0.48-------1085-----285-----1848

25mph----14.2---0.4-------103--------44----135----0.77---------0.10----0.51-------1120-----289-----1902

jl93221 · « **Reply #1 on:** Jul 11, 2013, 06:19:23 PM »

new catalytic converter can make a big difference, how old is yours?

lucky7 · « **Reply #2 on:** Jul 11, 2013, 06:22:58 PM »

Get a cheap cat they go bad fast if someone ran cheap gas in it

eskimo19 · « **Reply #3 on:** Jul 11, 2013, 08:01:18 PM »

My guess is that cat is original, the guy i bought it from didnt mention to much he only towed it behind a motor home. had to replace the timing chain gasket because it was puking oil but it looked like someone was working on it before. Im thinking of getting an LC engineering cat any thoughts on their cats?

emsvitil · « **Reply #4 on:** Jul 11, 2013, 08:07:20 PM »

Timing needs to be 5 degrees +- 3

I get best results at 2.5 - 3 degrees BTDC

High NOX can sometimes be fixed by adding backpressure. I add a plate after the cat to do this.

http://board.marlincrawler.com/index.php?topic=64908.msg798411#msg798411

eskimo19 · « **Reply #5 on:** Jul 11, 2013, 08:39:00 PM »

did you make that plate??

emsvitil · « **Reply #6 on:** Jul 11, 2013, 08:42:01 PM »

Quote from: eskimo19 on Jul 11, 2013, 08:39:00 PM

did you make that plate??

Yes, it's just sheet metal.

Installed after the cat (only during smog tests)

Snowtoy · « **Reply #7 on:** Jul 11, 2013, 11:10:43 PM »

With the timing that far off, it would be hard to say what the cause is. Do the tune-up, maybe pull the cat to see what it looks like(should be able to see blurry light through the other end), then do another pretest to get an idea of where it is at at stock settings.

$300 for an LC engineering cat isn't worth the money, just buy one from a local auto parts store.

eskimo19 · « **Reply #8 on:** Jul 12, 2013, 02:49:54 AM »

thanks for the all the advice and ill go ahead and do all that stuff and see where it leaves me.

Vang530 · « **Reply #9 on:** Jul 12, 2013, 05:05:02 AM »

get yourself a $10 timing light at harbor freight and get it back close to spec (5 when jumping the correct jumpers)..15 degrees is way too much!

jl93221 · « **Reply #10 on:** Jul 12, 2013, 07:02:07 AM »

whatever cat you decide to buy make sure it has a carb number stamped on it

eskimo19 · « **Reply #11 on:** Jul 24, 2013, 12:05:45 PM »

ok took it back in today and still failed i did cap rotor plugs wires adjusted timing to 5 BTDC been running injector cleaner ever tank checked for vacuum leaks has new air filter cleaned egr and its working replaced o2 sensor with denso one and dont have any stored codes. drove it 40 miles on freeway prior to test and left running for 5 min before they took it in. would a new cat pass me with these number?
thanks :wall:http://board.marlincrawler.com/Smileys/marlin/wall.gif

o2 HC CO NO
max ave meas max ave meas max ave meas
15 MPH .7 131 60 144 .61 .08 .48 1085 285 964

25 MPH .4 103 44 137 .77 .10 .58 1120 289 1288

emsvitil · « **Reply #12 on:** Jul 24, 2013, 01:27:19 PM »

You mentioned that you think the cat is original.

How many miles on the truck?

eskimo19 · « **Reply #13 on:** Jul 24, 2013, 03:07:53 PM »

279,xxx on the clock and the cat has been welded from the down pipe so either it was replaced a long time ago or who knows but looks older.

emsvitil · « **Reply #14 on:** Jul 24, 2013, 03:55:37 PM »

Quote from: eskimo19 on Jul 24, 2013, 12:05:45 PM

o2 HC CO NO
max ave meas max ave meas max ave meas
15 MPH .7 131 60 144 .61 .08 .48 1085 285 964

25 MPH .4 103 44 137 .77 .10 .58 1120 289 1288

In 2007 my numbers were

15mph 1.2 o2 max 146 ave 43 meas 119 max 1.04 ave .16 meas .07 max 1136 ave 406 meas 769
25mph 0.9 max 118 ave 32 meas 87 max 1.32 ave .15 meas .09 max 1222 ave 349 meas 1176

just squeaked thru

Put a new cat on for 2009

HC CO NO
15mph meas 15 meas 0.00 meas 325
25mph meas 14 meas 0.00 meas 88

So I think a new cat will solve the problem

Also note the 2009 measurements were with the backpressure gasket in place

Snowtoy · « **Reply #15 on:** Jul 24, 2013, 04:19:31 PM »

Could be the cat, your HC's are on the high side. Have you checked for intake/exhaust leaks?

eskimo19 · « **Reply #16 on:** Jul 24, 2013, 08:57:45 PM »

slight exhaust leak coming from the weld seems on the muffler not bad and thats after the cat and i found a crack on the intake tube connecting to the intake. im not sure if its sucking air from there and if it is would that really throw my numbers that high?
thank you for all the replies i will be replacing the cat soon. found a magnaflow cat thats cali legal for 250

emsvitil · « **Reply #17 on:** Jul 24, 2013, 09:02:27 PM »

250, that seems high............

(but I have no idea what they cost now..........)

jimbo74 · « **Reply #18 on:** Jul 24, 2013, 09:58:19 PM »

those $100 cats aren't CA smog legal...... they are 49 state, except CA legal..... they have a note on them that says not for sale or use in ca on a pollution controlled vehicle

emsvitil · « **Reply #19 on:** Jul 24, 2013, 10:02:10 PM »

I thought the CA versions were closer to $150.

I saw a universal no-name brand at rockauto for just over $100 that was CA legal...........

eskimo19 · « **Reply #20 on:** Jul 24, 2013, 10:45:55 PM »

i know it needs the cali carb stamp, would the rock auto one work?

eskimo19 · « **Reply #21 on:** Aug 05, 2013, 07:11:05 PM »

well found that my cat was completely hollowed out, nothing left so got the new one on and we will see tomorrow. thanks for all the help

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