 Need help identifying pinging sound cylinder 3 |
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| nditiz1 |
 Sep 10 2017, 02:15 PM
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#1
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Senior Member  Group: Members Posts: 1,191 Joined: 26-May 15 From: Mount Airy, Maryland Member No.: 18,763 Region Association: MidAtlantic Region 
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I recently adjusted my vales .06/.08 and also rebuilt my carbs. They were done separate and driven in between. I'm now noticing a pinging sound coming from the carb barrel on cylinder 3. If I put my hand over the carb throat it makes the sound go away. It is doing this at idle of ~950. I will load a video of the sound. What do you all think?
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| porschetub |
Sep 11 2017, 03:19 PM
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#2
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Advanced Member Group: Members Posts: 4,708 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
You mentioned the carb on the effected side won't balance as the other setting wise,its not your compression because that is great.
Appears you have a weaker vaccum signal on that side ...must be leaking air ?. I have never liked the thick gaskets supplied with some of the air cleaner kits,they tend to settle in and the manifold can leak @ the head,worth checking? Good luck. |
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Posts in this topic
nditiz1 Need help identifying pinging sound cylinder 3 Sep 10 2017, 02:15 PM
nditiz1 Here is the link to the clip:
https://youtu.be/aS... Sep 10 2017, 03:29 PM DM_2000 I'm on a slow internet connection at the momen... Sep 10 2017, 03:35 PM nditiz1 Let me know what you think after you watch the vid... Sep 10 2017, 05:43 PM DM_2000 In the mean time, are you getting fuel standoff ab... Sep 10 2017, 06:43 PM porschetub Read this and thought the noise may be lean spitba... Sep 10 2017, 10:24 PM nditiz1 I did adjust the mixture screws and synched the ca... Sep 11 2017, 04:14 AM nditiz1 After doing some more reading, I realized I did no... Sep 11 2017, 06:43 AM nditiz1 Readjusted the idle bypass screws on all to 1/2 tu... Sep 11 2017, 09:44 AM rhodyguy Check the flow on each Venturi with all 4 air by-p... Sep 11 2017, 01:08 PM nditiz1 @rhodyguy
I originally had all seated. I then no... Sep 11 2017, 02:28 PM rhodyguy Try going the other direction. IN not out. It... Sep 11 2017, 02:33 PM
nditiz1
Try going the other direction. IN not out. It... Sep 11 2017, 03:09 PM nditiz1
You mentioned the carb on the effected side won... Sep 11 2017, 03:31 PM |
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