63 TB-No Power on 4&7

[Chandler63]

63 TB No Power on 4&7 Update

Power has been restored! The suggestion pointing me toward the carb, specifically the idle mixture screws was the ticket. It turns out that I had the wrong mixture screws installed. The new ones I purchased from Quadrajet Parts were about a 1/4 inch longer and made a huge difference. I am now running on all eight cylinders. Thanks again for all your help. Cheers!

[jopizz]

Congrats. The simplest solutions are always the best.

John

[fcar]

Ditto on your success!

[simplyconnected]

Here's the REAL winner; John you nailed it. (I knew you would.) Good show, ol' boy.

...The right side of the carburetor feeds cylinders 1,4,6,7. If the idle passage on the right side is partially blocked you will notice it more at low speed. One thing you can try is to remove the idle mixture screw on the right side and spray Gumout or any carburetor cleaner into the hole using the long plastic tip. I had constant problems with the idle passages on my Autolite 4100 carburetor getting clogged. After I changed to an Edelbrock carburetor the problem went away. I assume you adjusted the idle mixture screws on your rebuilt carb after you got it back.

John