 carb coughing |
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| dumbjim |
 Nov 28 2020, 09:18 PM
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#1
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Newbie  Group: Members Posts: 25 Joined: 21-June 05 From: st.louis mo. Member No.: 4,312  |
I decided to tune and sync my weber 40 idfs today for the first time. Everything went really smooth after reading about and watching video on the subject. First thing I did was check for vacuum leaks before going any further. After disconnecting the linkage and making all the adjustments, things seem to be running pretty smooth with the exception of the barrel for cylinder two will cough and burp. All four barrels are drawing 6 on my snail, with the engine warmed up. Any ideas what would cause this and possible corrections? Thanks in advance, this site has been extremely helpful to me in the past.
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| rhodyguy |
Nov 29 2020, 01:03 PM
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,240 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Turn the idle up with the dr side idle speed adj screw and remeasure. If your gauge has the holes in the base and body you might have to line the holes up to keep from pegging the gauge. Burp coming back thru the Venturi and at what rpm? I think of it as sneezing. Remember there are 3 factors. Idle jets, progression ports and the main jet circuitry.
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Posts in this topic
dumbjim carb coughing Nov 28 2020, 09:18 PM
914Toy
I decided to tune and sync my weber 40 idfs today... Nov 28 2020, 11:10 PM rhodyguy All 4 Venturi read the same at idle? Nov 29 2020, 07:35 AM
dumbjim
All 4 Venturi read the same at idle?
yup Nov 29 2020, 10:25 AM porschetub
Turn the idle up with the dr side idle speed adj ... Nov 29 2020, 05:06 PM |
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