 Air fuel ratio Ljet |
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| Geezer914 |
 Jun 19 2022, 01:44 PM
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Geezer914  Group: Members Posts: 1,767 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States 
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I am trying to adjust the air fuel ratio on me 2056 Ljet. I read the article that was posted a while back. I adjusted the wiper arm and set the idle at 1100 rpm (Raby 9550 cam) with the idle AFR at 13.2. When I check the high rpm the AFR is at 12.1. If I adjust the high rpm AFR to 13.2, (moving the large wheel 7 teeth CW) the the idle AFR is 16.9 with the mix screw all the way down. If I readjust the wiper arm to 13.2, then the high rpm AFR goes back to 12.2. Can't seem to find a happy medium. I know when you adjust the wiper arm it changes the mixture linear from idle to high rpm. How much more can I adjust the large wheel CW?
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Replies
| 914werke |
Jun 24 2022, 02:51 PM
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"I got blisters on me fingers" Group: Members Posts: 10,943 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest
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Thanks for chiming in Clay. @ClayPerrine
Ive never had the need to deep dive into L-Jet so Im still feeling my way. Heads are plugged. Stock "non-adjustable" pressure regulator, the pressure referenced may not be as high as I noted as the gauge Im using isn't that granular. The gauge does respond as expected to throttle inputs. Pretty confident I've eliminated all the air leaks, as I stated, I'm now at a point where Im feeding fuel via throttle to keep it running vs chasing a high idle. New ...everything. Hoses seals, injectors you name it. Still cant get it down to anywhere near the 800-1K idle necessary ... stumbles & dies. |
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Posts in this topic
Geezer914 Air fuel ratio Ljet Jun 19 2022, 01:44 PM
emerygt350 Is any of this under load? Jun 19 2022, 05:08 PM Geezer914 No. The idle is going to be the idle. The only t... Jun 19 2022, 05:31 PM
emerygt350
No. The idle is going to be the idle. The only ... Jun 19 2022, 05:39 PM Mark Henry Load AFR with iron jugs should be just under 13:1,... Jun 20 2022, 09:26 AM 914werke Sounds like were on a parallel path. Following
Im ... Jun 20 2022, 12:37 PM Van B Geezer, seems to me you were fine with the values ... Jun 21 2022, 10:02 AM 914werke Hopefully the Geez is making better progress than ... Jun 23 2022, 07:48 PM Van B Hmmm… AFM screw is 3-4 turns out, correct?
What... Jun 23 2022, 08:51 PM Geezer914 If your idle is high and no change when you adjust... Jun 24 2022, 04:31 AM Geezer914 I ended up with 13.1 at 3000 rpm and 16.9 at idle.... Jun 24 2022, 04:34 AM 914werke If your idle is high and no change when you adjus... Jun 24 2022, 09:17 AM ClayPerrine
If your idle is high and no change when you adju... Jun 24 2022, 02:33 PM Van B There is no 27 degree mark for the L-Jet. I wonde... Jun 24 2022, 12:21 PM rhodyguy Something is amiss down wind of the AFM? Vac leak ... Jun 24 2022, 01:01 PM wonkipop
Thanks for chiming in Clay. [b]@[url=http://www.... Jun 24 2022, 06:25 PM Van B On last time: Does your fan have the single red pa... Jun 24 2022, 03:28 PM wonkipop
On last time: Does your fan have the single red p... Jun 24 2022, 05:08 PM wonkipop from factory manual on timing marks.
(interesting... Jun 24 2022, 05:36 PM 914werke So thanks to all who chimed in.
Sometime you get ... Jun 24 2022, 07:08 PM wonkipop good stuff.
:beer2:
good looking throttle body.... Jun 24 2022, 07:21 PM Van B Ah yeah that’ll do it. When you said TB was goo... Jun 24 2022, 07:26 PM 914werke UGH. Im back.
Well I thought I have this dicked b... Jun 28 2022, 03:44 PM wonkipop i'm probably not much help - i have an entirel... Jun 28 2022, 07:11 PM ClayPerrine I don't ever recommend changing the settings o... Jun 29 2022, 06:32 AM Van B
I don't ever recommend changing the settings ... Jun 29 2022, 11:28 PM 914werke I don't ever recommend changing the settings ... Jun 29 2022, 04:55 PM ClayPerrine
[quote name='ClayPerrine' post='3012025' date='Ju... Jun 30 2022, 04:59 AM Geezer914 Look up Internet Air Cooled Air Flow Meter. There... Jun 29 2022, 07:08 PM 914werke Just an FYI.. I had factory training on L-Jet ba... Jun 30 2022, 12:37 PM wonkipop
Just an FYI.. I had factory training on L-Jet b... Jun 30 2022, 06:19 PM ClayPerrine
Just an FYI.. I had factory training on L-Jet b... Jul 1 2022, 05:39 AM 914werke Rich, I apologize if I came across as admonishin... Jul 1 2022, 11:01 AM ClayPerrine
[quote name='ClayPerrine' post='3012437' date='Ju... Jul 1 2022, 01:36 PM StarBear
[quote name='ClayPerrine' post='3012437' date='J... Jul 3 2022, 06:48 AM nihil44 I have been outed by @wonkipop . I have been loit... Jul 4 2022, 06:41 PM 914werke here's what Im working with:
Jul 1 2022, 03:00 PM wonkipop thats a 75 1.8 AFM.
i believe it pairs with a 75 ... Jul 1 2022, 08:45 PM ClayPerrine
thats a 75 1.8 AFM.
i believe it pairs with a 75... Jul 2 2022, 06:24 AM wonkipop part #s / details for the L Jet components on a 91... Jul 1 2022, 09:49 PM wonkipop @914werke
some one who might be able to help wit... Jul 2 2022, 07:56 PM ClayPerrine I don't understand why you would have to ... Jul 4 2022, 08:10 PM nihil44 Clay,
I was just having a play with the Kombi AFM... Jul 4 2022, 08:32 PM wonkipop thanks for the images @nihil44
great to be able... Jul 4 2022, 08:40 PM Van B That ‘74 6 pin doesn’t look like either of min... Jul 4 2022, 11:19 PM nihil44 Apologies to the group for posting photos of what ... Jul 5 2022, 08:37 PM |
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