 Found empty vacuum hose connection, What did it hook to? |
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| SVG223 |
 Feb 19 2022, 12:59 AM
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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  |
Newly acquired 914, 1976 2.0. Has missing vacuum hose. Does anyone know what it hooks to? This causes the car to idle high, I put my finger over it and the idle dropped from 1700 down to 500 rpm. Is this causing a lean fuel-air mixture? Thanks
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| SVG223 |
Feb 19 2022, 02:23 PM
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#2
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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 |
Feb 19 2022, 04:10 PM
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#3
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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 
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QUOTE(SVG223 @ Feb 19 2022, 02:23 PM)  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. |
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| SVG223 |
Feb 19 2022, 05:13 PM
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#4
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Newbie Group: Members Posts: 35 Joined: 6-February 22 From: Benton Arkansas Member No.: 26,317 Region Association: None |
QUOTE(wonkipop @ Feb 19 2022, 04:10 PM) QUOTE(SVG223 @ Feb 19 2022, 02:23 PM) 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. |
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| BeatNavy |
Feb 19 2022, 05:17 PM
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#5
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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
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QUOTE(SVG223 @ Feb 19 2022, 06:13 PM) 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. |
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Posts in this topic
SVG223 Found empty vacuum hose connection Feb 19 2022, 12:59 AM
Dustin Goes to the deceleration valve. Feb 19 2022, 02:35 AM brubou I think the fitting that goes there looks like a F Feb 19 2022, 09:11 AM ndfrigi
[url=http://www.914world.com/bbs2/index.php?sho... Feb 19 2022, 09:24 AM emerygt350 On earlier models, the f would go there. That lat... Feb 19 2022, 09:25 AM
BeatNavy Krieger is right. If someone deleted the decel va... Feb 19 2022, 10:27 AM
rjames
On earlier models, the f would go there. That la... Feb 19 2022, 02:16 PM Krieger At the very least plug that hole. Do an inventory... Feb 19 2022, 09:56 AM wonkipop
[quote name='wonkipop' post='2982880' date='Feb 1... Feb 19 2022, 05:21 PM ClayPerrine
you can run L jet without the decel. but i hear ... Feb 19 2022, 06:23 PM wonkipop
you can run L jet without the decel. but i hear... Feb 19 2022, 06:29 PM iankarr :wttc:
I made a video on restoring the AAR. It a... Feb 19 2022, 07:02 PM |
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