 1976 2.0L D-jet, distributor vacuum |
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| Ron914 |
 Mar 24 2025, 05:21 PM
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#1
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Member  Group: Members Posts: 356 Joined: 19-April 22 From: Huntington Beach,Ca Member No.: 26,487 Region Association: Southern California 
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@emerygt350
I was asked my a member helping me with my high idle /vacuum leak problem how I currently have it hooked up .This is the diagram I am using .  |
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| rjames |
May 7 2025, 09:03 AM
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#2
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I'm made of metal Group: Members Posts: 4,313 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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If the MPS won’t hold vacuum or is set way too lean, your idle will likely hunt no matter what else you do.
Fix the MPS first. |
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| emerygt350 |
May 7 2025, 09:39 AM
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#3
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Advanced Member Group: Members Posts: 3,016 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
QUOTE(rjames @ May 7 2025, 09:03 AM)  If the MPS won’t hold vacuum or is set way too lean, your idle will likely hunt no matter what else you do. Fix the MPS first. It's a really weak leak, and with a leak you are actually going rich. Hunting is normally a lean condition. |
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| rjames |
May 7 2025, 10:32 AM
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#4
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I'm made of metal Group: Members Posts: 4,313 Joined: 24-July 05 From: Shoreline, WA Member No.: 4,467 Region Association: Pacific Northwest
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QUOTE(emerygt350 @ May 7 2025, 08:39 AM) QUOTE(rjames @ May 7 2025, 09:03 AM) If the MPS won’t hold vacuum or is set way too lean, your idle will likely hunt no matter what else you do. Fix the MPS first. It's a really weak leak, and with a leak you are actually going rich. Hunting is normally a lean condition. You're right regarding a leak leading to a rich condition. That said, my experience with a MPS that had a cracked diaphragm resulted in a hunting idle and I couldn't fully resolve it by adjusting the mixture via the ECE. The hunting idle is what clued me in that the MPS may be bad in the first place. The OP may get different results though. |
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Posts in this topic
Ron914 1976 2.0L D-jet Mar 24 2025, 05:21 PM
emerygt350 How high is the idle currently? Mar 24 2025, 05:28 PM
Ron914
How high is the idle currently?
still around 140... Mar 24 2025, 06:19 PM Ron914 I think I might have a bad decel valve but others ... Mar 24 2025, 06:20 PM IronHillRestorations You might want to make sure the advance mechanism ... Mar 24 2025, 08:12 PM porschetub [quote name='IronHillRestorations' date=... May 8 2025, 06:46 PM emerygt350 That was my first thought. But you don't have... Mar 25 2025, 05:31 AM Ron914
That was my first thought. But you don't hav... Mar 25 2025, 07:59 AM emerygt350
That was my first thought. But you don't ha... Mar 25 2025, 08:48 AM emerygt350 Also ... 1400 just happens to be where the aar put... Mar 25 2025, 05:34 AM Ron914 Good morning Emery ,
I purchased these last night ... Mar 26 2025, 08:00 AM emerygt350 Oh the trouble we go through ;).
Someday I hope... Mar 26 2025, 08:45 AM Ron914 Great to hear you have family in Huntington Beach ... Mar 26 2025, 10:02 AM emerygt350 Very cool. Nothing bike related going on for anot... Mar 26 2025, 10:32 AM Ron914
Very cool. Nothing bike related going on for ano... Mar 26 2025, 10:58 AM emerygt350 If there is salt she hides in the garage. Otherwi... Mar 26 2025, 12:18 PM Ron914 Good morning Emery @emerygt350 ,
I finally had a ... Apr 5 2025, 07:25 AM Ron914
Good morning Emery [b]@[url=http://www.914world.... Apr 5 2025, 07:27 AM Ron914
Good morning Emery [b]@[url=http://www.914world... Apr 5 2025, 07:50 AM emerygt350 Let me see if I understand what you posted. When ... Apr 5 2025, 08:13 AM Ron914
Let me see if I understand what you posted. When... Apr 5 2025, 01:19 PM emerygt350 Definitely check the vacuum before you go breaking... Apr 5 2025, 02:34 PM Ron914
Definitely check the vacuum before you go breakin... Apr 5 2025, 03:43 PM Ron914
Definitely check the vacuum before you go breaki... Apr 5 2025, 03:46 PM Ron914
[quote name='Ron914' post='3199804' date='Apr 5 2... Apr 5 2025, 03:48 PM fiacra
[quote name='Ron914' post='3199804' date='Apr 5 2... Apr 5 2025, 04:14 PM emerygt350 That interval is what I shoot for, and I drive my ... Apr 5 2025, 05:13 PM Ron914 Emery ,
If the flaps are working and nothing has ... Apr 7 2025, 07:29 AM Ron914 Before I left for AZ I took photos of a couple of ... Apr 10 2025, 06:25 PM Superhawk996 Part on the left is the oil pressure switch for th... Apr 11 2025, 04:19 AM emerygt350 I would hate to be changing the cht sender at the ... Apr 11 2025, 07:07 AM Superhawk996
Hopefully what you have installed is the right o... Apr 11 2025, 08:11 AM Ron914 Hello Emery,
Finally had time to look at my car t... Apr 22 2025, 08:42 PM emerygt350 Definitely don't use the retard till you are g... Apr 23 2025, 06:09 AM emerygt350 The more I think about the more I suspect your diz... Apr 23 2025, 06:15 AM Superhawk996 :agree:
Gauge measures oil temp. Vehicle shoul... Apr 23 2025, 07:38 AM Ron914 I was probably idling and driving 30-40 minutes. I... Apr 23 2025, 07:58 AM Superhawk996
“ I assumed the thermo would pull them if w... Apr 23 2025, 08:57 AM ClayPerrine
“ I assumed the thermo would pull them if ... Apr 23 2025, 10:03 AM Ron914
“ I assumed the thermo would pull them if... Apr 24 2025, 12:04 PM Ron914 @emerygt350 ,Superhawk996,
I pulled my car out thi... Apr 24 2025, 01:38 PM Superhawk996 MPS should not be bleeding down noticeably
Redo ... Apr 24 2025, 01:44 PM Ron914
MPS should not be bleeding down noticeably
Redo... Apr 24 2025, 04:49 PM emerygt350 And your car should start with the vacuum hose off... Apr 24 2025, 02:18 PM Superhawk996 I am not sure if anyone has the diaphragms.
Tr... Apr 24 2025, 02:48 PM Ron914
And your car should start with the vacuum hose of... Apr 24 2025, 04:55 PM emerygt350 Hmmm... I put a new to me fan on mine when I rebu... Apr 24 2025, 07:02 PM Superhawk996
And your mps should hold air much longer than th... Apr 24 2025, 07:19 PM Ron914
Hmmm... I put a new to me fan on mine when I reb... Apr 24 2025, 07:57 PM Ron914 If I can find parts I will need some coaching on r... Apr 24 2025, 08:05 PM Ron914 Nothing on Patrick's site
I just found this bu... Apr 24 2025, 08:11 PM emerygt350 That's part of it. On a 76 if you have the ori... Apr 24 2025, 08:21 PM Superhawk996 Was revisiting a previous thread
Found this:
... Apr 24 2025, 08:23 PM Ron914
Was revisiting a previous thread
Found this:
... Apr 24 2025, 08:28 PM Superhawk996 I’m getting old - I don’t remember seeing that... Apr 24 2025, 08:45 PM Ron914
I’m getting old - I don’t remember seeing tha... Apr 24 2025, 09:11 PM Superhawk996
[quote name='Superhawk996' post='3202614' date='A... Apr 25 2025, 07:26 AM emerygt350 That's tough. The rebuild kit plus the tuning... Apr 25 2025, 04:24 AM Ron914
That's tough. The rebuild kit plus the tunin... Apr 25 2025, 06:47 AM Ron914 I found this AFR on a website ,What do you think ?... Apr 25 2025, 06:56 AM TJB/914 Hi Ron,
I sent you a PM this morning.
I have what ... Apr 25 2025, 07:03 AM Ron914 @Superhawk996 , [b]@[url=http://www.914world.com/b... Apr 25 2025, 07:45 AM Superhawk996
[b]@[url=http://www.914world.com/bbs2/index.php?s... Apr 25 2025, 07:56 AM JeffBowlsby
[b]@[url=http://www.914world.com/bbs2/index.php?s... Apr 25 2025, 08:29 AM Ron914
[b]@[url=http://www.914world.com/bbs2/index.php?... Apr 25 2025, 08:32 AM TJB/914
[b]@[url=http://www.914world.com/bbs2/index.php?s... Apr 25 2025, 09:00 AM Ron914
[b]@[url=http://www.914world.com/bbs2/index.php?... Apr 25 2025, 09:10 AM JeffBowlsby Sincere apologies Ron, did not realize your engine... Apr 25 2025, 09:03 AM Ron914 What else do you have in that box of junk(just kid... Apr 25 2025, 09:13 AM Ron914 @emerygt350 , [b]@[url=http://www.914world.com/bbs... Apr 25 2025, 10:39 AM emerygt350 I suggest an aem O2 sensor and gauge, I have tried... Apr 25 2025, 11:15 AM Ron914
I suggest an aem O2 sensor and gauge, I have trie... Apr 25 2025, 12:21 PM emerygt350 In this video my I am cruising down the highway at... Apr 25 2025, 11:20 AM Ron914
In this video my I am cruising down the highway a... Apr 25 2025, 07:58 PM Ron914 @emerygt350 , [b]@[url=http://www.914world.com/bbs... Apr 25 2025, 04:25 PM Ron914 @emerygt350
I found these online ,would they be w... Apr 25 2025, 07:56 PM Ron914 I can actually buy this set up on Amazon with free... Apr 25 2025, 08:15 PM Ron914 I forgot this one , and these choices look like my... Apr 25 2025, 08:24 PM emerygt350 Yes, those look good. Make sure the cables are lo... Apr 25 2025, 08:27 PM Ron914
Yes, those look good. Make sure the cables are l... Apr 25 2025, 09:11 PM emerygt350 If there is a 12 you may want that instead. Apr 26 2025, 04:19 AM Ron914
If there is a 12 you may want that instead.
@em... Apr 26 2025, 07:00 AM emerygt350 I bought the 18 and it was way too much. I just l... Apr 26 2025, 02:04 PM Ron914
I bought the 18 and it was way too much. I just ... Apr 26 2025, 04:48 PM Ron914 @emerygt350
Update: Where I am as of today . I k... May 6 2025, 05:13 PM rjames I have lost track of some of this thread, and I kn... May 6 2025, 05:37 PM Ron914
I have lost track of some of this thread, and I k... May 6 2025, 06:06 PM emerygt350 That looks like some good progress. I couldn... May 6 2025, 06:11 PM Ron914
That looks like some good progress. I couldn... May 6 2025, 06:47 PM emerygt350 The only thing you will be playing with are the id... May 7 2025, 05:14 AM Ron914 Still working on my D-Jet issues I ran my motor an... May 7 2025, 02:14 PM emerygt350 Very good idea. You have the chart for that temp ... May 7 2025, 04:42 PM Ron914
Very good idea. You have the chart for that temp... May 7 2025, 05:00 PM emerygt350 One is for the supplementary heater on my afr (doe... May 7 2025, 07:36 PM Ron914
One is for the supplementary heater on my afr (do... May 7 2025, 09:50 PM emerygt350 You may want the afr up top and the cht down low w... May 7 2025, 07:37 PM emerygt350 The instructions are online, not sure what model y... May 8 2025, 04:19 AM |
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