 carb air leak?, occasioally surging idle |
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| VaccaRabite |
 Sep 22 2010, 08:03 PM
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En Garde!  Group: Admin Posts: 13,756 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region 
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I am having a weird issue with my carbs.
They will go along fine at 1100 RPM idle all day. Suddenly I will stop at a sign or red light and the idle will climb from 1100 to 1700 and my car will start making unsynced carb noises. Sometimes it will settle back town if I tap the gas peddle, sometimes not. Once the idle surges, it will be like that for a while when I stop, and then it will suddenly drop back down to 1100 RPM and and behave nicely. I am guessing that I have an intermittant air leak in one of my carbs. Anything else I need to be looking at? My theories, in order of what I think is likely: 1) air leak somewhere 2) gas leaking past the inlet valve 3) weirdness with the linkage I have not been able to recreate the issue at home, its always when I am on the road so I don't yet know which carb is acting up. Its worse if I am driving the car hard, but will happen when I am just cruising around town some too. Ideas? Zach |
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| 904svo |
Sep 22 2010, 08:58 PM
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904SVO Group: Members Posts: 1,126 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
I don't think you have a air leak, air leak would made the engine slow down. I would suggest you check your linkage it sound like its twisting and hitting something
at times. I had a problem like this one time and found the spark plug wire was getting caught in the linkage and stopping it from hitting the idle stop. |
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Posts in this topic
Vacca Rabite carb air leak? Sep 22 2010, 08:03 PM
Vacca Rabite I'll take another look at the linkage. If it ... Sep 23 2010, 06:48 AM Cevan Zach, your next winter project should be to make a... Sep 23 2010, 07:34 AM
Vacca Rabite
Zach, your next winter project should be to make ... Sep 23 2010, 08:01 AM rhcb914 I also vote to look at the linkage. Make sure bot... Sep 23 2010, 07:34 AM bobhasissues I had similar issues and found that if the "a... Sep 23 2010, 08:15 AM |
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