Edelbrock 1405 carb running rich

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

iamtherealJayy

Full Access Member
Joined
Nov 26, 2021
Posts
1,576
Reaction score
276
Location
Tennessee
First Name
Jacob
Truck Year
1987, 1978, 1976
Truck Model
V20, K10, K10
Engine Size
350, 350, 350
You must be registered for see images attach

This is with choke on, if I touch the throttle the choke closes, should I pump it a few times close the choke and attempt to start?
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
xc_hide_links_from_guests_guests_error_hide_media
Does this sound like it’s just too cold? It’s firing but not staying running. Is it too lean? Fouled plugs? I’m freezing outside so I know it’s not happy.
Yes, choke on and throttle screw turned in a few turns and I bet it fires right up
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
You must be registered for see images attach

This is with choke on, if I touch the throttle the choke closes, should I pump it a few times close the choke and attempt to start?
Yes, I would just zip tie the lever on the other side closed(to the back) and then pump 2-3 times and crank till it starts. If you have to give it light throttle to get it to fire, you don't have the screw in far enough.
 

iamtherealJayy

Full Access Member
Joined
Nov 26, 2021
Posts
1,576
Reaction score
276
Location
Tennessee
First Name
Jacob
Truck Year
1987, 1978, 1976
Truck Model
V20, K10, K10
Engine Size
350, 350, 350
I just turned the idle screw in until it shut the choke, then closed the chrome back. It still won’t start.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Yes, I would just zip tie the lever on the other side closed(to the back) and then pump 2-3 times and crank till it starts. If you have to give it light throttle to get it to fire, you don't have the screw in far enough.
Once it fires and has a chance to warm up a bit, then cut the zip tie and let the choke come off. Then blip the throttle and it will come off the high idle cam. Once that happens you can do the idle mixture and idle set screw adjustments as well as timing.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Maybe flooded? Make sure choke flap stays closed(suggest zip tie or safety wire). Throttle full open and crank. That should clear it if flooded.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
I just turned the idle screw in until it shut the choke, then closed the chrome back. It still won’t start.
I'm not sure what this means. Idle screw should have nothing to do with choke closure
 

iamtherealJayy

Full Access Member
Joined
Nov 26, 2021
Posts
1,576
Reaction score
276
Location
Tennessee
First Name
Jacob
Truck Year
1987, 1978, 1976
Truck Model
V20, K10, K10
Engine Size
350, 350, 350
@Bextreme04 I assume it opens the choke because it comes off the cam?
 

potent rodent

Full Access Member
Joined
Mar 22, 2020
Posts
195
Reaction score
112
Location
indiana
First Name
butch
Truck Year
86 and 78
Truck Model
1500
Engine Size
350 and 305
check and see if u r getting fuel from the squirters in the carb , u may have to advance or retard the dist while trying to start
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
@Bextreme04 I assume it opens the choke because it comes off the cam?
The idle screw will pull it off the cam if you screw it in too far and the lever on the passenger side isn't held to the rear. Hold that lever to the rear(again.. zip tie or wire), then unscrew the main idle screw(you want to be able to get it OFF high idle at some point), and screw in the high idle screw just a bit. Then you will have a carb that is functioning like you would expect on a normal cold start. It will give you the ability to mess with the throttle as needed to get it to start without letting the choke pull off.

Once its warmed up, then you can cut off the zip tie and let the choke be off.
 

iamtherealJayy

Full Access Member
Joined
Nov 26, 2021
Posts
1,576
Reaction score
276
Location
Tennessee
First Name
Jacob
Truck Year
1987, 1978, 1976
Truck Model
V20, K10, K10
Engine Size
350, 350, 350
As all good things do, it must come to an end. Battery didn’t like the cold weather either apparently. Started cranking slower and slower until I figured it had enough for today. It was firing but it stopped as soon as let off the key, I have the choke ziptied closed and I pumped it a couple times and it fires almost instantly but it doesn’t take off like it should. And once you let off the key it stalls out after a second.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
check and see if u r getting fuel from the squirters in the carb , u may have to advance or retard the dist while trying to start
That too... but you'll never get it to start in sub zero temps with no choke on and not on a high idle.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
As all good things do, it must come to an end. Battery didn’t like the cold weather either apparently. Started cranking slower and slower until I figured it had enough for today. It was firing but it stopped as soon as let off the key, I have the choke ziptied closed and I pumped it a couple times and it fires almost instantly but it doesn’t take off like it should. And once you let off the key it stalls out after a second.
Probably need to charge the battery and try again tomorrow. I'd give the high idle screw an extra turn or two and try again.
 

Bextreme04

Full Access Member
Joined
May 13, 2019
Posts
4,428
Reaction score
5,541
Location
Oregon
First Name
Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Also, you can leave the distributor somewhat tight(just enough to turn it with mild force. Then, turn it a bit clockwise and counterclockwise in between attempted starts. You will likely be 10-20 degrees off of where you want to be initially(which isn't helping this process)
 

potent rodent

Full Access Member
Joined
Mar 22, 2020
Posts
195
Reaction score
112
Location
indiana
First Name
butch
Truck Year
86 and 78
Truck Model
1500
Engine Size
350 and 305
hold it to the floor like eric said and crank it it may be flooded
 

Forum statistics

Threads
43,979
Posts
946,993
Members
36,035
Latest member
CCBJR
Top