RE: carb puzzle?

[Rich Kinsley <rlkinsley@xxxxxxxxx>]

The fuel pump shield is an easy addition that can't do anything but 
help. However it's more for when the car is running and the fuel flowing 
in the line. Insulating the line is good too and would have more 
relation to expansion in the line forcing gas into the carb. Still the 
float should stop it unless the pressure becomes quite excessive. The 
phenolic or wood spacer would definetly help decrease the carb 
temperature and help to prevent expansion there. But I think there is 
another gremlin in the equation and that is the modern fuel. It just 
evaporates so fast it's incredible. Be sure not to use ethanol blends 
unless you're driving in really cold weather. It helps then. I'm not 
real sure that there isn't some in all the new fuels anyway.

Of course it is correct to be sure the float level is right and the 
needle and seat are functioning properly. And silly as it sounds don't 
rev the engine just as you shut it off. That squirts excess gas in there 
too. Good luck.

Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies
=====================================================================
spigot2039@xxxxxxxxxxx wrote:
> 
> Hi all,
> 
> A fellow is trying to get his 1965 Coronet's Poly 318 carb to stop 
> weeping gas on the manifold after the engine is hot and the car is shut 
> off. He bought a re-manufactured carb from Holey and it is doing the 
> same thing the old original carb was doing. It is a Ball & Ball 2 barrel 
> manufactured by Carter. The model is the BBD-38445 for a 273 with 
> automatic trans. 
> 
> He talked to Holley's technical help about fuel leaking onto the intake 
> manifold after the engine is shut down for a short time, maybe from the 
> throttle shaft on the drivers side of the carb. They said it was either 
> 1) excessive fuel tank pressure caused by possibly a blocked vent 
> tube;(this is not possible as the car's fuel cap is loose due to someone 
> messing with it previously); or 2)a problem with underhood heat causing 
> the pressure in the carb to build up and force fuel into the throat 
> while the engine is not running and drip onto the the plates and then 
> onto the shaft. The fuel line from the fuel pump could be getting too 
> much heat from the exhaust manifold.  The Holley technician suggested a 
> phenolic spacer under the carb to act as a heat sink.
> 
> I suggested he make sure the fuel line is not too close to the engine. 
> Then, if that does not help, try to insulate the fuel line from the pump 
> to the carb through buying some generic insulation material at a NAPA 
> type store or street rod vendor. Or first just wrapping a bunch of 
> aluminum foil around the fuel line and wrap some aluminum tape over it 
> to keep it in place and see what happens. At least for a test.  Or some 
> other method to shield the fuel line from the heat coming off the intake 
> manifold. 
> 
> I suggested he could build a heat sink / carb spacer out of MDX plywood 
> like Rich K. and then a fuel pump heat shield like Rich did too.
> 
> Any thoughts?
> 
> Thanks,
> Gary H.
> 
>  
>   



Rich Kinsley '64 Dodge Polara 4dr 318poly w/goodies


----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html.