 High idle problem, Hunting |
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| Flyinlow |
 Mar 31 2026, 05:39 PM
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#1
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Flyinlow  Group: Members Posts: 137 Joined: 17-October 20 From: British Columbia, Canada Member No.: 24,774 Region Association: Canada 
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Nearing the end of my restoration drove car today for first time in 30 years!! Start up is 1000 rpm a little high…. Then on its own goes to 3000 rpm then seems to settle to 2500 rpm.. when shifting rpm rises? I checked throttle cable for routing… all good and it did decel but not quickly as it seemed to be hunting any help much appreciated.TIA Dennis (IMG:style_emoticons/default/blink.gif)
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| mgphoto |
Mar 31 2026, 05:53 PM
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#2
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"If there is a mistake it will find me" Group: Members Posts: 1,425 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
Big air leak in the intake.
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| porschetub |
Mar 31 2026, 11:54 PM
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#3
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914 Guru Group: Members Posts: 5,062 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(mgphoto @ Apr 1 2026, 12:53 PM)  Big air leak in the intake. Certainly sounds like it, quick test on the throttle cable ,when the engine is up to temp disconnect it and see what it does . The vacuum leak is a telltale of loose /leaking air hose/s or many other reasons ,D-jet isn't happy with air leaks ,even a small leak will render the air screw to no non -op . Go back and check everything ,cheers. |
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Posts in this topic
Flyinlow High idle problem Mar 31 2026, 05:39 PM
Flyinlow Car is 74 2.0 D jet and I had no response from idl... Mar 31 2026, 05:44 PM emerygt350 If you just start the car and let it sit, what doe... Mar 31 2026, 05:49 PM
Flyinlow
If you just start the car and let it sit, what do... Mar 31 2026, 06:14 PM Flyinlow
Big air leak in the intake.
How would you determ... Mar 31 2026, 06:16 PM mgphoto If it changes when it gets hot must be something w... Mar 31 2026, 08:37 PM mgphoto If the idle undulates, it usually is the idle air ... Mar 31 2026, 08:41 PM |
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