D jet slow idle, Found this... |
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D jet slow idle, Found this... |
bobboinski |
Sep 24 2021, 06:11 PM
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#1
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Member Group: Members Posts: 198 Joined: 23-April 16 From: Petaluma Member No.: 19,929 Region Association: Northern California |
I have been fighting the D jet slow idle on my 1971 1.7. Have checked and rechecked everything. Bought a smoke machine. Bought a new timing light with advance. All new ignition parts. Checked MPS. Checked all sensors with ohm meter. Disassembled and cleaned Distributor. Good compression. So started disconnecting things. When i disconnected and plugged the vacuum retard I was able to adjust a 900 rpm idle with the (finally effective after removing vacuum retard) idle air bleed. So I did a search for "914 vacuum retard" and this link came up. Read the last post. Exactly fits my symptoms. I'm going to try what he describes tomorrow and see what happens. But I'm pretty sure I'm on the right track finally. Thoughts?
https://shoptalkforums.com/viewtopic.php?t=2513 |
emerygt350 |
Sep 24 2021, 08:27 PM
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#2
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Advanced Member Group: Members Posts: 2,145 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Lots of good stuff in there but also some odd bits. What I did, after all my vacuum leaks were fixed, was set the idle using the timing.
I am still not super happy but pretty close. Since you have a 71, pcv, I believe, is passive or non existent? How do you feel about your TPS? If those are not issues than warm your engine up real nice, close that idle screw and maybe turn it open a half turn or so. Then loosen your distributor and set the idle by your timing. This only works if everything else is good. If you have vacuum leaks and messed up injectors etc, don't bother. |
bobboinski |
Sep 25 2021, 09:00 AM
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#3
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Member Group: Members Posts: 198 Joined: 23-April 16 From: Petaluma Member No.: 19,929 Region Association: Northern California |
Lots of good stuff in there but also some odd bits. What I did, after all my vacuum leaks were fixed, was set the idle using the timing. I am still not super happy but pretty close. Since you have a 71, pcv, I believe, is passive or non existent? How do you feel about your TPS? If those are not issues than warm your engine up real nice, close that idle screw and maybe turn it open a half turn or so. Then loosen your distributor and set the idle by your timing. This only works if everything else is good. If you have vacuum leaks and messed up injectors etc, don't bother. I did what you are saying yesterday. It worked and now I don't feel like the car is always going to die at idle. And no pinging under load. (IMG:style_emoticons/default/driving.gif) |
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