Recent Topics
Raptor 700- M1 vs. T4
by Torch94. 12/10/18 11:38 AM
Unusual 75W-90 Cold Specs
by badtlc. 12/10/18 10:39 AM
BITOG Mobile Login
by RamFan. 12/10/18 10:20 AM
Rehab cast iron cornbread mold
by bcossa2001. 12/10/18 07:58 AM
Beware Youtube
by SilverFusion2010. 12/10/18 06:35 AM
Where do you normally change your oil?
by ZZman. 12/10/18 04:54 AM
Lowe's - $25 off $25 - YMMV
by tony1679. 12/10/18 04:42 AM
Need advice on Filter choices
by GMguy84. 12/10/18 12:41 AM
Chevron Supreme synthetic oil? What happened?
by Onetor. 12/09/18 11:50 PM
235 50 15
by WiskyBadger. 12/09/18 11:21 PM
QUICKJACK 5000 ---COSTCO
by Deere John. 12/09/18 10:26 PM
Diesel Fuel Oil Dilution - 5w-30 Castrol Edge Pro. C1
by BladerunnerBoats. 12/09/18 10:24 PM
Home Remodeling Question
by FirstNissan. 12/09/18 10:22 PM
It Snowed Last Night.
by gfh77665. 12/09/18 10:13 PM
Are you Naughty or Nice?
by MolaKule. 12/09/18 09:49 PM
Made me Laugh
by mbacfp. 12/09/18 09:25 PM
Newest Members
Torch94, EvilFox, Hawkerpilot05, paintballzero, A_User55555
66641 Registered Users
Who's Online Now
98 registered members (4WD, 53' Stude, andyd, 240_Ed, 69GTX, aquariuscsm, 7 invisible), 2,051 guests, and 34 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums67
Topics294,870
Posts4,923,430
Members66,641
Most Online2,553
Oct 27th, 2018
Donate to BITOG
Previous Thread
Next Thread
Print Thread
Hop To
Page 1 of 2 1 2
Just passed smog test. Hydrocarbons a bit high #4458877
07/13/17 11:33 PM
07/13/17 11:33 PM
Joined: Oct 2010
Posts: 1,789
california
wrcsixeight Offline OP
wrcsixeight  Offline OP
Joined: Oct 2010
Posts: 1,789
california
Here are 3 smog test results 12 years apart on same vehicle/engine, most recent 2017 on bottom:



In a previous thread showing macro pics of my previous bosch +2 sparkplugs, Trav said the coil could be on its way out.

All the other ignition components are new, Taylor 8mm wires, NGK Gpower platinum plugs, new airtex/wells distributor cap and rotor.

It is a 12 or 13 year old Echlin.

Thinking the replacement will be an Airtex/Wells.

http://www.rockauto.com/en/moreinfo.php?pk=2060580&cc=1073506&jsn=438

I was impressed with their distributor cap


LA 318 Roller Cam
Pennzoil Platinum 10w-30
Fram ultra XG8A
Fram Ultra XG16 on remote transmission filter mount
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4458886
07/13/17 11:50 PM
07/13/17 11:50 PM
Joined: Jul 2009
Posts: 432
Seattle
Superflop Offline
Superflop  Offline
Joined: Jul 2009
Posts: 432
Seattle
You have good wires plugs and cap n rotor throw in a nice coil like an accel, flame thrhrower or screamin demon and open the gap a bit to something like 60 thousandths. On my old 1994 grand cherokee with 318 i had taylor wires, summit racing cap and rotor and a screamin demon coil with plugs gapped at 65 and it ran like a swiss watch.


2002 saab 9-5 2.3t wagon
2014 dodge grand caravan
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4458926
07/14/17 02:39 AM
07/14/17 02:39 AM
Joined: Jan 2011
Posts: 2,821
N.Ohio
Lubener Offline
Lubener  Offline
Joined: Jan 2011
Posts: 2,821
N.Ohio
I would not worry over it. The readings are not drastically different from 2005 and would pass with flying colors in my state.. You passed and do not need to worry till next test time.Why look for problems that may not exist. Your probably dealing with a converter which is slowly losing its effectiveness or a small vacuum leak.

Last edited by Lubener; 07/14/17 02:51 AM.

The "thinking" man's friend.
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4458933
07/14/17 03:04 AM
07/14/17 03:04 AM
Joined: Dec 2013
Posts: 3,989
Manchester, England
Olas Offline
Olas  Offline
Joined: Dec 2013
Posts: 3,989
Manchester, England
A beefier coil and a bottle of HEET and you'll pass with flying colours smile


Cable ties should hold it
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4458959
07/14/17 05:00 AM
07/14/17 05:00 AM
Joined: Jul 2005
Posts: 30,959
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,959
NY
I'd find something else to worry about, you passed. The engine and emissions system are older with more time, miles, and wear on it than the last test. That in and of itself can make slight changes in emissions.


God Bless Our Troops

Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459001
07/14/17 05:52 AM
07/14/17 05:52 AM
Joined: Dec 2016
Posts: 7,109
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,109
Waco, TX
Instead of changing the coil, you could try closing the gap between the rotor and the individual poles in the distributor cap. I usually modify the rotor to accomplish this.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459025
07/14/17 06:20 AM
07/14/17 06:20 AM
Joined: Sep 2015
Posts: 1,588
USA
mk378 Offline
mk378  Offline
Joined: Sep 2015
Posts: 1,588
USA
CO has also always been a bit high, and NO kind of low (at least it was back in the first test when the converter was new). This suggests a rich run not misfiring.

Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459059
07/14/17 07:09 AM
07/14/17 07:09 AM
Joined: Apr 2017
Posts: 1,481
Ontario, Canada
mightymousetech Offline
mightymousetech  Offline
Joined: Apr 2017
Posts: 1,481
Ontario, Canada
HC high at low speed, I would be replacing the PCV valve first.


Mighty Mouse Tech
BMW Tech, Former Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459112
07/14/17 08:29 AM
07/14/17 08:29 AM
Joined: Sep 2015
Posts: 6,073
Kalifornia Kollective
BrocLuno Online content
BrocLuno  Online Content
Joined: Sep 2015
Posts: 6,073
Kalifornia Kollective
+1

And, run a new dedicated ground lead from the battery Neg ( - ) pinch bolt to the intake and then on to the firewall. #8 wire or bigger with crimped and soldered lugs the size to fit the bolts chosen. It will help the ECU see all the engine sensor circuits with a clean "O" baseline, so the injection will be better and more stable.

Coils don't fade away. They either work, or are shorted internally and don't. They can be intermittent with heat. But they do not slowly die.


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Just passed smog test. Hydrocarbons a bit high [Re: mk378] #4459149
07/14/17 09:30 AM
07/14/17 09:30 AM
Joined: Jan 2011
Posts: 2,821
N.Ohio
Lubener Offline
Lubener  Offline
Joined: Jan 2011
Posts: 2,821
N.Ohio
Originally Posted By: mk378
CO has also always been a bit high, and NO kind of low (at least it was back in the first test when the converter was new). This suggests a rich run not misfiring.

The CO isn't high. He's atleast half of the limit.


The "thinking" man's friend.
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459216
07/14/17 11:10 AM
07/14/17 11:10 AM
Joined: Nov 2013
Posts: 872
Central Coast California
RedOakRanch Offline
RedOakRanch  Offline
Joined: Nov 2013
Posts: 872
Central Coast California
I just got a handed down 1994 Crown Vic with 200k, it only blew 5ppm on nasty plugs. I only knew because I have since changed them. I'd think one of the sensors or cat is starting to go on your vehicle. My friends 99 dodge 360 passed with a broom sticked cat a few years ago and it blew higher numbers similar to yours.


1994 Ford Crown Vic 207k-Frankenbrew 0w20,30,40!
2005 Chevy 1500 Crewcab 4X4 180k-BC 0w30 $2/qt
2016 Outback 2.5 Limited 60k-shop brand?
Re: Just passed smog test. Hydrocarbons a bit high [Re: BrocLuno] #4459220
07/14/17 11:13 AM
07/14/17 11:13 AM
Joined: Sep 2004
Posts: 7,799
Marshfield , MA
andyd Online content
andyd  Online Content
Joined: Sep 2004
Posts: 7,799
Marshfield , MA
Originally Posted By: BrocLuno
+1



Coils don't fade away. They either work, or are shorted internally and don't. They can be intermittent with heat. But they do not slowly die.
I used to think that too. Until I had one that would run poorly and raw gas collected in the exhaust and touched off. One of my BMW buddies reported a similar situation. These were the typical can type coils. On the whole reliable. easy to replace.


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459225
07/14/17 11:17 AM
07/14/17 11:17 AM
Joined: May 2006
Posts: 300
California
brave sir robin Offline
brave sir robin  Offline
Joined: May 2006
Posts: 300
California
I drive my truck less than 500 miles a year so between smog checks I'm not exactly wearing out parts. Every time I get it tested it shows different totals sometimes vastly different numbers with no hardware changes. Before I start spending money I would just go on nice freeway trip with a few WOT pulls and then pull into the smog station with it nice and hot.


With dreams to be a king, first one should be a man
95 Nissan Pathfinder 5w-30 M1-HM
68 Buick Electra 10w-30 QS Defy
02 Aprilia Falco 15w-40 Rotella
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459231
07/14/17 11:30 AM
07/14/17 11:30 AM
Joined: Oct 2010
Posts: 1,789
california
wrcsixeight Offline OP
wrcsixeight  Offline OP
Joined: Oct 2010
Posts: 1,789
california
It will be two years before I get another smog test, as I don't have a friend with a sniffer just to run that portion of the test, and will not be paying just to see the results of any changes I might make.

I replaced the last coil as oil was weeping out of the tower. These are mounted on their sides.

I had pulled into station with several WOT pulls and with it as hot as the engine gets. They pulled in onto the rollers almost immediately.

With all new ignition components, but the coil, I was hoping for better HC readings

A new coil is about 25$


LA 318 Roller Cam
Pennzoil Platinum 10w-30
Fram ultra XG8A
Fram Ultra XG16 on remote transmission filter mount
Re: Just passed smog test. Hydrocarbons a bit high [Re: wrcsixeight] #4459306
07/14/17 12:43 PM
07/14/17 12:43 PM
Joined: Apr 2009
Posts: 315
Maryland
walterjay Offline
walterjay  Offline
Joined: Apr 2009
Posts: 315
Maryland
You passed. You're good. Sleep well tonight.

Page 1 of 2 1 2

BOB IS THE OIL GUY® Powered by UBB.threads™