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SVG223 |
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#1
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Newbie ![]() Group: Members Posts: 35 Joined: 6-February 22 From: Benton Arkansas Member No.: 26,317 Region Association: None ![]() |
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Dustin |
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#2
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Member ![]() ![]() Group: Members Posts: 111 Joined: 19-August 10 From: Woodland Hills, CA Member No.: 12,072 Region Association: None ![]() |
Goes to the deceleration valve.
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brubou |
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#3
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Bruce Bouchard ![]() ![]() Group: Members Posts: 92 Joined: 29-February 16 From: West Bradford, PA Member No.: 19,716 Region Association: MidAtlantic Region ![]() ![]() |
I think the fitting that goes there looks like a F
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ndfrigi |
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#4
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California ![]() ![]() |
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emerygt350 |
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#5
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 2,156 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States ![]() |
On earlier models, the f would go there. That later port is way too small for the f I have on my 73. Did they have a smaller f for late models?
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Krieger |
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#6
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,731 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None ![]() ![]() |
At the very least plug that hole. Do an inventory of the parts you have and then figure out what you might need and how to connect them. Its not that hard.
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BeatNavy |
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#7
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Certified Professional Scapegoat ![]() ![]() ![]() ![]() Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region ![]() ![]() |
Krieger is right. If someone deleted the decel valve you can simply cap that connection so it's not a vacuum leak anymore. With stock fuel injection you really should acquire a decel valve and plumb that back in, however. It prevents damage to the MPS on hard overrun.
Also, FWIW, that leak isn't really making you run lean. It's just giving the engine more air just like when you open the throttle. |
rjames |
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#8
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I'm made of metal ![]() ![]() ![]() ![]() Group: Members Posts: 3,974 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest ![]() ![]() |
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SVG223 |
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#9
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Newbie ![]() Group: Members Posts: 35 Joined: 6-February 22 From: Benton Arkansas Member No.: 26,317 Region Association: None ![]() |
You guys are great! That JeffBowlsby link even tells me the size hose it needs! The deceleration valve is there. What is strange is I got the car from a classic car dealer in Houston where they did a tune-up on the car before I bought it. The car takes a while to warm up, like it's a little lean, wants to die when backing out of the driveway. After it warms up it is fine. The tires are a little tall not sure if that is contributing 205/70-15.
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wonkipop |
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#10
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,420 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille ![]() ![]() |
You guys are great! That JeffBowlsby link even tells me the size hose it needs! The deceleration valve is there. What is strange is I got the car from a classic car dealer in Houston where they did a tune-up on the car before I bought it. The car takes a while to warm up, like it's a little lean, wants to die when backing out of the driveway. After it warms up it is fine. The tires are a little tall not sure if that is contributing 205/70-15. if it is anything like an L jet the warm up weak idle might be due to the AAV (aux air valve). ie its closing too quick or not opening at all for extra intake air when the engine is cold. |
SVG223 |
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#11
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Newbie ![]() Group: Members Posts: 35 Joined: 6-February 22 From: Benton Arkansas Member No.: 26,317 Region Association: None ![]() |
You guys are great! That JeffBowlsby link even tells me the size hose it needs! The deceleration valve is there. What is strange is I got the car from a classic car dealer in Houston where they did a tune-up on the car before I bought it. The car takes a while to warm up, like it's a little lean, wants to die when backing out of the driveway. After it warms up it is fine. The tires are a little tall not sure if that is contributing 205/70-15. if it is anything like an L jet the warm up weak idle might be due to the AAV (aux air valve). ie its closing too quick or not opening at all for extra intake air when the engine is cold. This sounds about right, I bet it's not opening at all. It dropped to 500rpm Ice cold when I covered the hole. Maybe I can take it off and soak it in something. |
BeatNavy |
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#12
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Certified Professional Scapegoat ![]() ![]() ![]() ![]() Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region ![]() ![]() |
Maybe I can take it off and soak it in something. You have the right idea. If you remove it it's very simple to bench test. Connect the lead to the positive terminal and ground the body of the AAR. It should go from fully open cold to fully closed in like 5 to 10 minutes. If not, yeah, clean/soak/etc. Watch Ian's video. |
wonkipop |
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#13
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,420 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille ![]() ![]() |
You guys are great! That JeffBowlsby link even tells me the size hose it needs! The deceleration valve is there. What is strange is I got the car from a classic car dealer in Houston where they did a tune-up on the car before I bought it. The car takes a while to warm up, like it's a little lean, wants to die when backing out of the driveway. After it warms up it is fine. The tires are a little tall not sure if that is contributing 205/70-15. if it is anything like an L jet the warm up weak idle might be due to the AAV (aux air valve). ie its closing too quick or not opening at all for extra intake air when the engine is cold. This sounds about right, I bet it's not opening at all. It dropped to 500rpm Ice cold when I covered the hole. Maybe I can take it off and soak it in something. not a D jet man, but i'd guess the rev drop is because the idle is set currently with that extra air entering via the open port. its like you have an idle port without the adjustment screw. you will need to reset your idle with that port blocked or correctly connected to decel. advice to cap the port for now if you can't hook up to decel valve is good. its only a small port but its sucking in unfiltered air and ........dust/dirt. you can run L jet without the decel. but i hear D jet needs it. as advice above says. EDIT - you will need the car fully warmed up to reset steady idle. then you can address the weak start up idle at cold. the AAV is an older style on the D jets and i don't know much about them. i'm currently investigating a weak AAV on my L jet. its really only a bug bear on cold start and i kind of put up with it for now. not much you can do with the AAVs on L jet except clean them out. but the "springs" (electric heated coil) do go weak with age. i assume D jet AAVs suffer similarly. |
ClayPerrine |
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#14
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Life's been good to me so far..... ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Admin Posts: 15,542 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille ![]() ![]() |
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wonkipop |
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#15
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 4,420 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille ![]() ![]() |
you can run L jet without the decel. but i hear D jet needs it. as advice above says. Not true. You really need the decel valve in the L-Jet to keep it from dying when the throttle snaps closed. Clay yeah - i don't seem to have that problem clay. and its been like that for 33 years. has a fuel pressure regulator subbed in as a visual emission cheat done by original owner. but i've been thinking about what you say and i figure it might have something to do with all the slight variations on L jet we found after mr bolwsby prompted the search for the EC-A, EC-B versions of 74 that lead to the two different versions in 75. i've got the version with the vac advance hook up off the distributor to the throttle body. the EC-B 49 state car of 74. i'd have to think about it more but i wonder if this does not make it come down so savagely without the decel. the L jets without that hook up might behave slightly differently. anyway its never been a problem on mine, though i have a decel sitting around now and just have to tweak the bracket and test it to put it in. when i get around to it i'll report to you on the difference. |
iankarr |
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#16
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The wrencher formerly known as Cuddy_K ![]() ![]() ![]() ![]() Group: Members Posts: 2,482 Joined: 22-May 15 From: Heber City, UT Member No.: 18,749 Region Association: Intermountain Region ![]() ![]() |
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I made a video on restoring the AAR. It assumes the wire is still intact and the heating element works. There was also a recent post about replacing the heating element. https://youtu.be/cBdjLrxvBIM |
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