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HELP! 67 Coupe issues with Carb? Power? Fuel? ??

  • Thread starter Thread starter ynasef
  • Start date Start date Nov 18, 2020
Y

ynasef

New Member
Nov 18, 2020
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Bahrain
Nov 18, 2020
#1
  • Nov 18, 2020
  • #1
Hey everyone,

I have been having a lot of trouble getting my 67 coupe started lately. I ordered a new Edelbrorck 1901 AVS2 500 cfm carb and installed it, the car ran great and no issues at all!

Due to circumstances, the car was parked after that for 2 to 3 months. Now, when I came to start the car again, there was a transmission leak, which I fixed and replaced everything. The car would crank but would not start.

Suddenly the car turned over and started but was rough and not idling properly, I managed to drive a short distance and then it would not start unless I have my foot on the gas pedal, as soon as I lift my foot off it would just die.

I checked the power supply and everything seemed to check out. I replaced the Spark Plugs, MSD Coil, Rotor and Cap on MSD Ready to Run Distributor, Checked the Spark Wires, Cleaned the Carb and there was not gunk in the bowls, Replaced the Starter Solenoid with a brand new one, and STILL NO GO!

Every time I try to start the car it would crank and turn on as long as I have my foot on the gas pedal, BUT AS SOON AS I TAKE MY FOOT OFF, IT DIES OUT! What is going on here? Can anyone help, I have been trying to figure this out for a long time now.
 

Adieu

Easy there, this ain't a dating site.
20+ Year Stangneter
Mar 7, 2002
9,531
5,187
224
Nov 18, 2020
#2
  • Nov 18, 2020
  • #2
What has likely happened is that your gasoline in the tank has gone stale from sitting. Modern gasoline formulations do so in 30-90 days. On top of that, the only bad thing about an Edelbrock carburetor is that it is prone to gasoline evaporating from it when it sits for more than a few days, which can leave deposits behind.

Drain the old fuel from your tank and fill it with fresh fuel, crank the engine for a few seconds with the coil disconnected to fill the bowls of the carburetor, re-connect the coil, and try to start it again.
 
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TIGGER

Founding Member
Mar 6, 2000
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Portland, OR
Nov 18, 2020
#3
  • Nov 18, 2020
  • #3
Maybe check for vacuum leaks as well.
 
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ynasef

New Member
Nov 18, 2020
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Bahrain
Nov 19, 2020
#4
  • Nov 19, 2020
  • #4
MustangIIMatt said:
What has likely happened is that your gasoline in the tank has gone stale from sitting. Modern gasoline formulations do so in 30-90 days. On top of that, the only bad thing about an Edelbrock carburetor is that it is prone to gasoline evaporating from it when it sits for more than a few days, which can leave deposits behind.

Drain the old fuel from your tank and fill it with fresh fuel, crank the engine for a few seconds with the coil disconnected to fill the bowls of the carburetor, re-connect the coil, and try to start it again.
Click to expand...
I found the problem today after opening the top part of the carb and doing some cleaning and adjustments. Turned the car on and realized that the Primary Booster Venturis were blocked and were barely spitting fuel!!

Now I will remove those venturis and probably soak them and clean them, But what should I soak them in?
 

Adieu

Easy there, this ain't a dating site.
20+ Year Stangneter
Mar 7, 2002
9,531
5,187
224
Nov 19, 2020
#5
  • Nov 19, 2020
  • #5
ynasef said:
I found the problem today after opening the top part of the carb and doing some cleaning and adjustments. Turned the car on and realized that the Primary Booster Venturis were blocked and were barely spitting fuel!!

Now I will remove those venturis and probably soak them and clean them, But what should I soak them in?
Click to expand...
B12 Chemtool if you can get it, another non-aerosol carburetor cleaner if you can't.
 
Reactions: ynasef
Y

ynasef

New Member
Nov 18, 2020
3
0
1
Bahrain
Nov 19, 2020
#6
  • Nov 19, 2020
  • #6
TIGGER said:
Maybe check for vacuum leaks as well.
Click to expand...
I found the problem today after opening the top part of the carb and doing some cleaning and adjustments. Turned the car on and realized that the Primary Booster Venturis were blocked and were barely spitting fuel!!

Now I will remove those venturis and probably soak them and clean them, But what should I soak them in?
MustangIIMatt said:
B12 Chemtool if you can get it, another non-aerosol carburetor cleaner if you can't.
Click to expand...
Great! Thanks. I got a bottle of B12 Chemtool today and will do the soak and see. Thank you for your help
 
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