thanks, jeff. i think i have it all sorted out now.
cale
thanks, jeff. i think i have it all sorted out now.
cale
i just wanted to post up a quick update.
i got the entire system installed a while ago but just got the car on the road recently.
the difference is amazing. the car always stunk inside while sitting at lights, but i thought it was due to having no cats and the exhaust blowing in. no, it was that uncapped vapor hose tucked in the fender. my girlfriend who didn't even know what i did to the car over the winter, aside from rebuilding the transmission even said "wow, the car doesn't smell bad anymore."
driving it, there are no drivability problems. i just went out in the garage. the car is sitting there and i can't smell any fuel. man it stunk before, sweet!
i hid the lines in the fender so it looks pretty clean.
thanks to all that helped me figure this out.
cale
I am trying to get my EVAP system working properly on my '85 GT, and I found this post on a search. Unfortunately, my 1985 Mustang is actually missing the valve, so I have to get a new one.
It seems these delay valves are color-coded to their function. Is the "brown delay valve" that goes in the line between your distributor vacuum source and the purge valve, (teed into the line to the distributor) supposed to be brown/black or brown/white?
Last edited by RickFury; 12-13-2010 at 11:06 AM.
On my carbed '85, the delay valve is black/brown.
The purpose of the delay valve is to slow the vacuum to the purge valves, so that they
don't open during throttle transitions.
There are basically four types of delay valves used in Fords. The first three types are
identical, apart from nipple sizes, and the direction of flow relative to the colored vs
black (or white) side. The third type has delay in both flow directions. Within each of
these types, you'll also have differences in delay timing, which is where the actual color
starts to matter. Unfortunately, I don't have a chart that lists the color codes.
In practical terms, I wouldn't worry too much about whether you have the exact delay
valve that was originally used, especially if you're running it off distributor ported vacuum.
(The factory purge system ran off EGR vacuum.)
Cheers,
Jeff Cook
'85 GT Hatch, 5-speed T-Top, Eibachs, Konis, & ARE 5-Spokes ... '85 GT Vert, CFI/AOD, all factory...
'79 Fairmont StaWag, 5.0, 62K original miles ... '04 Azure Blue 40th Anny Mach 1, 37K original miles...
2012 F150 S-Crew 4x4 5.0 "Blue Coyote"... 65 coupe, 289 auto, Pony interior ... '67 coupe 6-cyl 4-speed ...
'68 Vert, Mexican block 307 4-speed... '71 Datsun 510 ...
And a 1-of-328 Deep Blue Pearl 2003 Marauder 4.6 DOHC, J-Mod, 4.10s and Lidio tune
Thank you, JACook.
Here is a link to the chart for all the different delay vlaves:
http://en.wikipedia.org/wiki/Vacuum_delay_valve
In checking my parts stash, I found that I already have a green/black delay valve. According to the chart, here is a comparison of the correct brown/black delay valve compared to the green/black one I already have:
1.) brown/black: Time (seconds) = 20, Threshold (+/-seconds) = 4, Direction = Forward
2.) green/black: Time (seconds) = 200, Threshold (+/-seconds) = 40, Direction = Forward
Unfortunately, there is not much of a description on how to read this chart to compare different valves. Can you tell me what the difference would be in using the brown/black valve versus a green/black valve?
Last edited by RickFury; 12-15-2010 at 01:45 PM.
Well, first, there is no universal color code that applies across manufacturers. So knowing
what the colors mean for a Jeep, won't help when you're working on a Ford.
Without having measured the valves, I'll suggest that if you're running the purge system
off EGR vacuum, you might want to find a brown/black delay valve. (Though I'm not sure
it's really that important.) If you're running the purge system off distributor ported vacuum,
then the green/black valve may be more appropriate.
This admittedly unscientific suggestion is based on the type of vacuum each valve was
originally used with. But the purge system is not so critical, as long as you get canister
purge when the engine is at cruise. What's more important is that you use the orifice in
the main purge line. Without the orifice you may get lean surging at cruise.
Cheers,
Jeff Cook
'85 GT Hatch, 5-speed T-Top, Eibachs, Konis, & ARE 5-Spokes ... '85 GT Vert, CFI/AOD, all factory...
'79 Fairmont StaWag, 5.0, 62K original miles ... '04 Azure Blue 40th Anny Mach 1, 37K original miles...
2012 F150 S-Crew 4x4 5.0 "Blue Coyote"... 65 coupe, 289 auto, Pony interior ... '67 coupe 6-cyl 4-speed ...
'68 Vert, Mexican block 307 4-speed... '71 Datsun 510 ...
And a 1-of-328 Deep Blue Pearl 2003 Marauder 4.6 DOHC, J-Mod, 4.10s and Lidio tune
Thanks again, JACook.
My EGR has been removed, and I am running the EVAP system off of distributor ported vacuum. Everything seems to work as it should so far. The only thing I am running into is some slight "stuttering" when I am accelerating at part throttle.
I tried the green/black delay valve I have and it actually seemed to help it a little bit, but it is still sometimes there if I accelerate slowly. I think if I had a valve that would "delay" just a little bit longer than the one I have, it would solve the problem. I blew into the valve before I used it to make sure it still worked, and it seemed to "delay" only a few seconds. According to the chart, though, the green/black valve has a time of 200 seconds. But I don't understand what the "threshold" means.
I would be looking at the orifice that goes in the purge line between manifold vacuum, and
the canister. If you don't have an orifice, or if it's too large, you'll notice it at part-throttle.
Cheers,
Jeff Cook
'85 GT Hatch, 5-speed T-Top, Eibachs, Konis, & ARE 5-Spokes ... '85 GT Vert, CFI/AOD, all factory...
'79 Fairmont StaWag, 5.0, 62K original miles ... '04 Azure Blue 40th Anny Mach 1, 37K original miles...
2012 F150 S-Crew 4x4 5.0 "Blue Coyote"... 65 coupe, 289 auto, Pony interior ... '67 coupe 6-cyl 4-speed ...
'68 Vert, Mexican block 307 4-speed... '71 Datsun 510 ...
And a 1-of-328 Deep Blue Pearl 2003 Marauder 4.6 DOHC, J-Mod, 4.10s and Lidio tune
All of this information will be helpful when I properly connect my charcoal canister and vacuum lines soon.
Thanks to JACook and all the other posters.
Have
86 Coupe LX Conversion 5.0 5spd
70 Mustang Conv. My 1st car. Still have it.
70 Ranchero 302 Auto
07 Focus daily driver
Totaled
70 Ranchero 351C Auto
85 Coupe 1 of 62 Sand Beige
I have one of the original canisters on my car. The guy I sold it to took of all he could see, he missed the canister in the wheel well. It has the two main ports but not the other small ports. A previously posted picture show the valve I have in one of the main ports, and a cap on the other. Is it possible to use the main port F shaped fitting and hook up the purge valve to it?
Would I hook the small, top port on the connector to the tank and the lower, larger port to the purge valve?
Does any of that make sense? I'd rather buy as few parts as possible.
Have
86 Coupe LX Conversion 5.0 5spd
70 Mustang Conv. My 1st car. Still have it.
70 Ranchero 302 Auto
07 Focus daily driver
Totaled
70 Ranchero 351C Auto
85 Coupe 1 of 62 Sand Beige
Cancel that last post. I forgot I purchased a second canister and it has the small and large ports, as well as the main openings that I need to cap.
I'll be able to use all the info provided above.
Thanks.
Have
86 Coupe LX Conversion 5.0 5spd
70 Mustang Conv. My 1st car. Still have it.
70 Ranchero 302 Auto
07 Focus daily driver
Totaled
70 Ranchero 351C Auto
85 Coupe 1 of 62 Sand Beige
So I'm putting all of the valves and new vacuum hose in tomorrow.
Is there one place better than another for the location of the purge valve?
Engine compartment or fenderwell?
Cable tied or free hanging?
Thanks for your input.
Have
86 Coupe LX Conversion 5.0 5spd
70 Mustang Conv. My 1st car. Still have it.
70 Ranchero 302 Auto
07 Focus daily driver
Totaled
70 Ranchero 351C Auto
85 Coupe 1 of 62 Sand Beige
bump. .
Have
86 Coupe LX Conversion 5.0 5spd
70 Mustang Conv. My 1st car. Still have it.
70 Ranchero 302 Auto
07 Focus daily driver
Totaled
70 Ranchero 351C Auto
85 Coupe 1 of 62 Sand Beige
mine is back behind the fender apron along with all of my lines. i zip tied it where it needed to be supported.
cale
I realize this is an old thread but it keeps coming up in my searches to make heads or tails of the vacuum system.
I found this list of FORD vacuum delay valves which may be more relevant to our cars than the list previously linked to.
Spark Delay Valve
Time in SecondsColor Code I.D. Number Minimum Maximum White/Brown 2 2 5 White/Green 20 9 20 Black/Grey 1 1 4 Black/Brown 2 2 5 Black/White 5 4 12 Black/Yellow 10 5.8 14 Black/Blue 15 7 16 Black/Green 20 9 20 Black/Orange 30 13 24 Black/Red 40 15 28
The list was found here, http://www.1bad6t.com/Maverick/repai...ntrols_02.html
Hi there. Nice information.
About Respect https://www.youtube.com/watch?v=2bk9WG8KWW0
X's Album http://vb.foureyedpride.com/album.php?albumid=2922
Oz JPS Stang http://www.nzmustang.com/Images/Hist...cecars/jps.htm
4V (A)US Race V8's https://www.youtube.com/watch?v=Tqk18A-ibjA
ITZOLD 81 Fox http://vb.foureyedpride.com/showthre...-fun-and-games
6V i6's @ http://www.xecltd.info/?rd=10 ; AWD i6's @ http://www.apetracing.co.nz/
113 mph 84 5.0 at Amaroo https://www.youtube.com/watch?v=iTezv3Pzdls&t=8s
Techno KCM Loop Out: Severed Heads 1m³ Angels 1985 https://youtu.be/Wll6G1KpLqQ
Future Shock https://youtu.be/rDKGkWU0lWQ
Cheers,
Jeff Cook
'85 GT Hatch, 5-speed T-Top, Eibachs, Konis, & ARE 5-Spokes ... '85 GT Vert, CFI/AOD, all factory...
'79 Fairmont StaWag, 5.0, 62K original miles ... '04 Azure Blue 40th Anny Mach 1, 37K original miles...
2012 F150 S-Crew 4x4 5.0 "Blue Coyote"... 65 coupe, 289 auto, Pony interior ... '67 coupe 6-cyl 4-speed ...
'68 Vert, Mexican block 307 4-speed... '71 Datsun 510 ...
And a 1-of-328 Deep Blue Pearl 2003 Marauder 4.6 DOHC, J-Mod, 4.10s and Lidio tune
Damn, I was hoping this would be a simple hook up.
Sent from my SM-G965U using Tapatalk
About Respect https://www.youtube.com/watch?v=2bk9WG8KWW0
X's Album http://vb.foureyedpride.com/album.php?albumid=2922
Oz JPS Stang http://www.nzmustang.com/Images/Hist...cecars/jps.htm
4V (A)US Race V8's https://www.youtube.com/watch?v=Tqk18A-ibjA
ITZOLD 81 Fox http://vb.foureyedpride.com/showthre...-fun-and-games
6V i6's @ http://www.xecltd.info/?rd=10 ; AWD i6's @ http://www.apetracing.co.nz/
113 mph 84 5.0 at Amaroo https://www.youtube.com/watch?v=iTezv3Pzdls&t=8s
Techno KCM Loop Out: Severed Heads 1m³ Angels 1985 https://youtu.be/Wll6G1KpLqQ
Future Shock https://youtu.be/rDKGkWU0lWQ
Last edited by xctasy; 04-10-2020 at 04:02 AM.
About Respect https://www.youtube.com/watch?v=2bk9WG8KWW0
X's Album http://vb.foureyedpride.com/album.php?albumid=2922
Oz JPS Stang http://www.nzmustang.com/Images/Hist...cecars/jps.htm
4V (A)US Race V8's https://www.youtube.com/watch?v=Tqk18A-ibjA
ITZOLD 81 Fox http://vb.foureyedpride.com/showthre...-fun-and-games
6V i6's @ http://www.xecltd.info/?rd=10 ; AWD i6's @ http://www.apetracing.co.nz/
113 mph 84 5.0 at Amaroo https://www.youtube.com/watch?v=iTezv3Pzdls&t=8s
Techno KCM Loop Out: Severed Heads 1m³ Angels 1985 https://youtu.be/Wll6G1KpLqQ
Future Shock https://youtu.be/rDKGkWU0lWQ
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