 D jet air screw adjustment, D jet air screw starting point |
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| SWH |
 Oct 14 2024, 11:27 PM
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#1
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Newbie  Group: Members Posts: 16 Joined: 27-April 24 From: Arizona Member No.: 28,084 Region Association: Southwest Region  |
Just completed engine rebuild on 1974 2.0L. Original D-jet injection system is in place. Did the cam break in this weekend. The throttle body has an air screw that I can’t find any information on where to set. Any information is appreciated in starting point adjustment and how to determine best setting.
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| emerygt350 |
Oct 15 2024, 05:07 AM
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#2
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Advanced Member Group: Members Posts: 3,506 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Looks great. That screw is really to taste at first. I would suggest you start a full turn or so out, then dial in appropriately to get your 900 idle. However, your idle is going to depend on timing and your ECU idle richness setting. If it is still original cam and displacement, and 0 vacuum leaks you shouldn't have a problem. Set the ECU to the factory notch (normally around 9 o'clock).
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| ctc911ctc |
Oct 15 2024, 08:45 AM
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#3
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Senior Member Group: Members Posts: 1,323 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States 
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9 Oclock in reference to the direction of the car (front - to - Back) or the direction of the ECU (PassengerSide to DriverSide)? QUOTE(emerygt350 @ Oct 15 2024, 05:07 AM)  Looks great. That screw is really to taste at first. I would suggest you start a full turn or so out, then dial in appropriately to get your 900 idle. However, your idle is going to depend on timing and your ECU idle richness setting. If it is still original cam and displacement, and 0 vacuum leaks you shouldn't have a problem. Set the ECU to the factory notch (normally around 9 o'clock). |
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Posts in this topic
SWH D jet air screw adjustment Oct 14 2024, 11:27 PM
emerygt350 As it would sit in the car and you looking towards... Oct 15 2024, 09:26 AM SWH Thanks for the feedback. I do have a mild cam from... Oct 16 2024, 01:50 PM emerygt350 Is it a 2056 (bigger jugs and pistons)? Even if n... Oct 16 2024, 05:30 PM TheCabinetmaker The air bleed screw sets final idle speed after dw... Oct 17 2024, 02:40 PM
dr914@autoatlanta.com sure does look great, how did you refinish the imp... Oct 17 2024, 03:00 PM |
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