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1979 Dodge failed NEW ca smog test element. #754681
December 05th 2019 9:19 pm
December 05th 2019 9:19 pm
Joined: Feb 2018
Posts: 40
California
oldpar Offline OP
newbie
oldpar  Offline OP
newbie
Joined: Feb 2018
Posts: 40
California
1979 Dodge B200 360 engine big plastic fuel tank (36 gal )

Went for Ca smog test and was introduced to a new element never encountered before.
Evap system pressure test.
They screwed a cap onto the fuel filler and pressure tested the fuel tank and evap system (charcoal filters lines etc.)
They failed the van saying there was a gross leak somewhere in the system.
It is a 2 cannister system, one cannister has a filter element at the bottom so looks to me like there is no way it could be sealed for a pressure test. Also there is a port at the bottom of the other cannister that is open to air. Does not show on the smog system diagram under hood.
Plugged the port on cannister #2 and changed cannister #1 to a sealed unit (although the original is a matching oem # to the vehicle. Failed again ! Getting a smoke test tommorrow to find leak points. (bet it is at the top of the fuel tank ?)
Ques #1 Cannister with filter element at bottom normal ?
Ques #2 what would the extra port on bottom of Cannister #2 be for ?


Last edited by oldpar; December 05th 2019 9:52 pm.

1979 Dodge B200 wrangler factory authorized van conversion.
360 cid 727 auto trans NP203 full time 4 wd
Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754686
December 06th 2019 7:38 am
December 06th 2019 7:38 am
Joined: May 2018
Posts: 1,343
TN
Astrocreep66 Offline
old hand
Astrocreep66  Offline
old hand
Joined: May 2018
Posts: 1,343
TN
Easiest and cheapest way to fix it is to move to Tennessee..lol..CA knows old vehicles are hard to keep to the tough emissions standards they set. Top of tank or broken return line are common.


When in doubt..get the sawzall out..
Re: 1979 Dodge failed NEW ca smog test element. [Re: Astrocreep66] #754690
December 06th 2019 9:36 am
December 06th 2019 9:36 am
Joined: Feb 2018
Posts: 40
California
oldpar Offline OP
newbie
oldpar  Offline OP
newbie
Joined: Feb 2018
Posts: 40
California
Thank you for the fast response.
Moving to Tennessee seems the best option for more reasons than that !
Thought about this evap system pressure test all night.
The canisters have been there since van was new. The one with the filter on the bottom was replaced once with an exact oem replacement part when the filter material broke and charcoal ran out the bottom. That tells me that it is an open or vented system so I am thinking that the test itself can not be done.
So before I make a lot of work and expense I thought I might try asking a calif air resource board referee station or carb themselves.


Last edited by oldpar; December 06th 2019 9:40 am.

1979 Dodge B200 wrangler factory authorized van conversion.
360 cid 727 auto trans NP203 full time 4 wd
Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754694
December 06th 2019 11:28 am
December 06th 2019 11:28 am
Joined: Nov 2013
Posts: 1,462
West Texas
W
Wedgy Offline
old hand
Wedgy  Offline
old hand
W
Joined: Nov 2013
Posts: 1,462
West Texas
Hi Oldpar,

No way around it if you do have a leak. Probably a lot of hose back and forth too. Question. Are they pulling Vacuum off of the tank?
You could run an air hose yourself and maybe hear it, Mebe?
Smog has always sucked, but, Starting to hear tales of woe coming out of Cali.

Cali refugee, Texas in 2014. No income tax. No CARB! Gas is 2.11 a gallon here. No way I could manage owning the fleet, in California.

I close my eyes and imagine a Snowflake CARB Referee Code 3 meltdown, as you pull up in your magnificent Pathfinder BVan.

Good Wrenching, and Van On!

Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754719
December 06th 2019 6:20 pm
December 06th 2019 6:20 pm
Joined: Feb 2018
Posts: 40
California
oldpar Offline OP
newbie
oldpar  Offline OP
newbie
Joined: Feb 2018
Posts: 40
California
Thank you for the replies guys !
Figured it out.
The open canister is normal, When they did the test they clamped the wrong line AFTER the canister. The line that they did not clamp and should have runs from fuel tank to 1st canister and is supposed to be clamped BEFORE the canister.
Actually the test does not need to be run at all on my vehicle because the line from my fuel tank to canister is metal with a very short piece of hose at each end so can not be clamped at all. That is the reason I never saw the test run before ! LOL
Passed smog with flying colors.

California stinks trying to talk wife into moving to a free state !


1979 Dodge B200 wrangler factory authorized van conversion.
360 cid 727 auto trans NP203 full time 4 wd
Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754734
December 07th 2019 1:35 am
December 07th 2019 1:35 am
Joined: Oct 2019
Posts: 17
SE MN
txmnjim Offline
stranger
txmnjim  Offline
stranger
Joined: Oct 2019
Posts: 17
SE MN
heck, even texas has emission tests...but minnesota doesnt ;)

Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754744
December 07th 2019 2:13 pm
December 07th 2019 2:13 pm
Joined: Sep 2019
Posts: 52
Santa Rosa
N
No_Sprk Offline
journeyman
No_Sprk  Offline
journeyman
N
Joined: Sep 2019
Posts: 52
Santa Rosa
my smog guy didnt do the EVAP on my 77 g10... which sucks because another one of his smog techs did it on a 80s volvo i brought it which made it fail.

heres a tip. always fill the tank up. it helps with the evap test. less room inside the tank means its easier to pull a vacuum. there can be some vacuum lost but it has to hold a certain number.

FYI all cars under 1996 have EVAP tests. i guess some techs dont do it.


1977 G10 SWB 250ci TH350 3.08 10bolt
Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754746
December 07th 2019 2:36 pm
December 07th 2019 2:36 pm
Joined: Jun 2010
Posts: 14,933
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 14,933
Van Diego California
Yep I have them also on my G30's every 2 yrs. other tips along with full tank is low on oil N bring it in hot after 10 miles racing on the freeway for Cali smog test. These tips have passed me every time for the last 2 decades on my 454's.


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754755
December 07th 2019 10:34 pm
December 07th 2019 10:34 pm
Joined: Feb 2018
Posts: 40
California
oldpar Offline OP
newbie
oldpar  Offline OP
newbie
Joined: Feb 2018
Posts: 40
California
frscke1 Yep I do the same !
Get that catalytic converter good and hot !
Another advantage I have is full time 4wd, No dyno rollers !


Last edited by oldpar; December 07th 2019 10:41 pm.

1979 Dodge B200 wrangler factory authorized van conversion.
360 cid 727 auto trans NP203 full time 4 wd
Re: 1979 Dodge failed NEW ca smog test element. [Re: oldpar] #754756
December 07th 2019 10:52 pm
December 07th 2019 10:52 pm
Joined: Feb 2018
Posts: 40
California
oldpar Offline OP
newbie
oldpar  Offline OP
newbie
Joined: Feb 2018
Posts: 40
California
No sprk Yes correct I looked it up during my research all vehicles pre 1996 have to have it done.
Rule went into effect 2007.
EXCEPT if the lines are difficult or impossible to get to then the tech makes a note of "not accessible" in the smog report.
Mine has a metal tube running along frame from fuel tank to canister with short nipples at each end. impossible to clamp correctly before the charcoal canister.
Also, if you have dual fuel tanks it is exempt from the evap test.

Last edited by oldpar; December 07th 2019 10:59 pm.

1979 Dodge B200 wrangler factory authorized van conversion.
360 cid 727 auto trans NP203 full time 4 wd
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