One carb not drawing-what's up?

[jonalley]

Eljaro, That's a serious amount of dismantling. Is there any way I can test for such leaks-e.g. the way you use soap suds on a gas pipe assembly. I know it's suction not pressure but ???
I've gone over all the carb and maniflod bolts to test if any were loose. All seemed fairly tight. If I can I will start the car tomorrow( Monday here) and see if it runs the same. Then I suppose I have no other recourse but to start taking things apart. Thanks all. Jon

[jonalley]

Follow up question. I always press the post button and then remember...
Rick- you suggested it was very important that I do not use any sealer on the gaskets. Is there a reason? Since I might be faced with installing new gaskets on the manifold itself I need to understand the right and wrong. I would, by past practice, put Permatex on the main manifold gasket whan I put things together.Thanks, Jon

[cab]

he means the gasket under the top part of the carb,i test for leaks with some carb cleaner .I had an idle that would go high and then drop ,checked with some cleaner spray the bottom of carbs and then around the manifold with the motor running found the leaks ,redid the intake and now no leaks.bump up the timing a deg or to and balance the carbs.got my webers from red line called ingeles and got a jet kit made 1 change to the idle jet..

[Eljaro]

Originally Posted by jonalley

Eljaro, That's a serious amount of dismantling. Is there any way I can test for such leaks-e.g. the way you use soap suds on a gas pipe assembly. I know it's suction not pressure but ???
I've gone over all the carb and maniflod bolts to test if any were loose. All seemed fairly tight. If I can I will start the car tomorrow( Monday here) and see if it runs the same. Then I suppose I have no other recourse but to start taking things apart. Thanks all. Jon

if you remove the carburetor you can look inside the intake runner in the manifold and you should see if the manifold gasket is in place or is sticking out one side. Wit a little mirror you may also able to look at the gasket from the side and see if it is fractured or torn. This physical inspection gives you the best indication of the gasket condition.
I had some surprises when removing manifolds and seeing the gasket on some runner just displaced quite a bit.That can be an air leak and is the cause of high oil consumtion.

Also check if your carburetor fixing screws ae not bottoming out in the hole and you not really getting them tight enough.
Also check that the distributor is not interfering with the carb body. I had to grind down some of the intake manifold there in order to fit the dissy.