 Carb throat popping at speed, New Problem!!! |
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| LetoAtreides |
 Aug 15 2008, 10:38 PM
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Member  Group: Members Posts: 86 Joined: 15-May 07 From: Half Moon Bay, California Member No.: 7,739 Region Association: None  |
Ok, so I know I've posted this before, but I still cant figure it out, and I need to know all of the possible circumstances under which this condition occurs.
One of the throads on my dual carbs is excessively lout at speed. It sounds like pop-pop-pop. Any ideas? |
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| LetoAtreides |
Aug 22 2008, 09:20 PM
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#2
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Member Group: Members Posts: 86 Joined: 15-May 07 From: Half Moon Bay, California Member No.: 7,739 Region Association: None |
Dellorto:
main jet 36 Venturii 140 I don't know the rest. They came with the car and worked perfectly on my old engine, so I don't know why they're acting up now. Plugs are as follows: 1: black 2: brown 3: black 4: brown The exhaust does smell a little rich and has some smoke when the car is first warming up. the popping seems to come from the 1-2 carburetor. I fixed the whistle! Just had to tighten the nuts that hold the carb to the manifold. |
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Posts in this topic
LetoAtreides Carb throat popping at speed Aug 15 2008, 10:38 PM
r_towle well, its lean.
How it has become lean could be al... Aug 15 2008, 11:13 PM drive-ability
Ok, so I know I've posted this before, but I ... Aug 15 2008, 11:14 PM Elliot Cannon If it accelerates OK but starts popping when you a... Aug 15 2008, 11:23 PM ArtechnikA also - check for bad, bent, or misaligned linkage.... Aug 16 2008, 09:10 AM LetoAtreides Update!
I adjusted the linkage on one side, a... Aug 16 2008, 04:57 PM LetoAtreides So i think I've pretty much fixed my popping p... Aug 20 2008, 12:56 PM r_towle What is your timing set at???
Rich Aug 20 2008, 01:11 PM LetoAtreides I timed it using an electronic tach. I rotated th... Aug 20 2008, 02:15 PM ArtechnikA Normally I am a very patient person but this has p... Aug 20 2008, 03:26 PM Mark Henry I understand how Rich feels, the T4 doesn't li... Aug 20 2008, 03:39 PM LetoAtreides Sorry for testing your patience, ArtechnikA, let m... Aug 20 2008, 05:26 PM
ArtechnikA
I'm 19 years old and learning to work on my o... Aug 20 2008, 07:07 PM LetoAtreides Thanks for the info.
How much is a smidge? is i... Aug 20 2008, 10:32 PM r_towle I will try to clarify.
Step one.
Static time the ... Aug 20 2008, 10:52 PM LetoAtreides Ok, cool.
I checked the points and dwell angle ve... Aug 20 2008, 11:03 PM ArtechnikA 27, 28 - that's probably as close as most of u... Aug 21 2008, 06:47 AM rhodyguy i suggest you limp or tow your car to High Perfoma... Aug 21 2008, 09:15 AM LetoAtreides
Yeah, I've done business with Rich, and he... Aug 21 2008, 01:39 PM LetoAtreides Ok, so I timed my car by the book, and it idles a ... Aug 22 2008, 05:17 PM ArtechnikA
Ok, so I timed my car by the book, and it idles a... Aug 22 2008, 06:28 PM ArtechnikA
Dellorto:
main jet 36
Venturii 140
Ahhh - no.
Th... Aug 23 2008, 07:00 AM LetoAtreides Ok, sorry about the bogus numbers. I thought the ... Aug 23 2008, 10:39 AM LetoAtreides Ok, main jet is 140
pump jet is 35
I'll have t... Aug 23 2008, 10:48 AM LetoAtreides idle jet is 55
throat is 40
sparks are nice and b... Aug 23 2008, 05:28 PM ArtechnikA
Tried driving it a bit today and no backfires whi... Aug 24 2008, 07:09 AM rhodyguy what are the flow #s as indicated on your synchron... Aug 24 2008, 07:46 AM |
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