Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
10-15-2020, 11:36 AM | #26 |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
There’s a photo of the number you can barely see the seven at the end
|
10-15-2020, 11:57 AM | #27 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,494
|
Re: Vacuum gauge adjusting mixture
Can’t find that number in my books or in here.
https://www.digitalcorvettes.com/thr...by-lars.88376/ There is info in there on how to determine primary rod size. You might need to pop a rod out to see what you’ve got. |
10-17-2020, 04:02 PM | #28 |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
So I adjusted my mixture today and was able to bring the vacuum up to around 19 pounds according to my gauge. I connected it to the port that is bottom front and center that the green arrow is pointing at. I tried connecting it to the blue arrow port but that only had vacuum when I pushed on the gas. I have to say that the exhaust fumes are much less Nauseous. It must have been running rich.
I connected Quadrajetparts.com and they gave me what they thought the original size of the rods might be and some options or rods I should purchase. It is running fairly well right now so o might wait on getting it dyno turned for a while. |
10-18-2020, 08:33 AM | #29 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,494
|
Re: Vacuum gauge adjusting mixture
If your electric choke does weird things just remove that blue cap from the barb on the housing. It’s not supposed to be plugged. It’s an air supply.
|
10-18-2020, 11:53 AM | #30 |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
Huh. Okay I will definitely uncap that
|
10-18-2020, 12:43 PM | #31 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,494
|
Re: Vacuum gauge adjusting mixture
And likely someone will come along on here and point out that uncapped like that It might allow some dirt inside.
Could happen. Just run a hose from it up behind the carb to the hose barb situated top centre of the top of the carb. That barb is filtered air. |
10-20-2020, 09:13 PM | #32 |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
Did these things ever run consistently when new? It seems like every time I drive it it runs different including the idle being lower in the morning than in the evening. One time it stutters and another time it doesn’t. Some times is really responsive and others not so much. Is it a quadrajet thing or at all carbs this finicky. I used to have an edelbrock from the parts store and it also seamed like it was always needed adjustment.
|
10-20-2020, 10:05 PM | #33 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,494
|
Re: Vacuum gauge adjusting mixture
They sure did, but they weren’t modded at all.
The heat riser valves worked, the heat crossover was wide open, the stove and pipe were there for heat when needed and the gas was better. Still some quirks like you have though. Mainly caused by ambient temps and humidity changes day to day or hour to hour. |
10-20-2020, 10:06 PM | #34 |
Senior Member
Join Date: Dec 2009
Location: TN.
Posts: 7,623
|
Re: Vacuum gauge adjusting mixture
Glad to hear you got your truck running some what normal
I would suggest that you try (Sea Foam) https://seafoamworks.com/ This will clean your system so you can get a Fresh start. Just my opinion
__________________
________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
10-20-2020, 10:49 PM | #35 | |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
Quote:
|
|
10-20-2020, 10:59 PM | #36 |
Senior Member
Join Date: Dec 2009
Location: TN.
Posts: 7,623
|
Re: Vacuum gauge adjusting mixture
Yes. It works wonders.
I buy it by the gallon. .
__________________
________________________________________________________________________________________ ____________________________________________ 84 Chevy K-20 63 Impala (my high school car) http://67-72chevytrucks.com/vboard/s...Crew Cab Build |
10-20-2020, 11:01 PM | #37 | |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
Quote:
|
|
11-15-2020, 06:49 PM | #38 |
Registered User
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,578
|
Re: Vacuum gauge adjusting mixture
Thank you guys for your help. I got it turned better than it has been sense the carb was installed.
|
Bookmarks |
Thread Tools | |
Display Modes | |
|
|