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Hi All,

My 65' looses carb prime after sitting a week.

Car won't start after much cranking, can pump throttle and get no gas from the accelorator pump. I give it a little manual prime (gas in top of carb) and it fires and runs fine and accelorator pump works correctly. Then I go for a nice drive and have no further starting issues, until I let it set for a week or more.

Car is equiped with an 600cfm Edlebrock 1405 (manual choke) and a mechanical fuel pump (don't know anything about the pump except that it's chrome).

Any help?
 

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Most likely due to fuel evaporating from the carb. If you want a cure for the problem try running an electric pump. That can prime the carb for you before you try and start it.
 

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I've had that issue on all mine which has been several. I've used glass fuel filters and the fuel travels back towards the tank. Takes a long time to crank and get the fuel primed back up to the carb. Those have all been with mechanical pumps. I've wondered about having a one-way valve on the fuel line. It is annoying.
 

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The problem is a simple one, your fuel bowls are going dry, it happens to all carbs regardless of brand, if yours is leaking than that is another issue. One week seems a little quick for that to happen, can you adjust the floats higher to keep more fuel in there?.

My demon can go about 2 weeks before it runs dry...
 

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The problem is the carb. Even the old cater carbs do this.

The fuel bowl fuel drips threw the main jets and over time just evaporates.

Its a know problem. Just a characteristic of the carb.:eek:

Al
 

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Mine does the same thing also. I don't think it has anything to do with the heat but I decided to go ahead and run a heat sheild anyway. If the weather ever gets any better I'll let you guys know if it helped at all. I figured it couldn't hurt to try it and may help during the warm months.
 
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