RE: [Chrysler300] Weird Carter carb problem - '65 300

["Laurence G. Johnson" <laurence_g_johnson@xxxxxxxxxxx>]

Hi Ryan,
I'd start by bypassing the fuel delivery system entirely. Get a metal gallon 
can with a screw on cap and solder some 5/16 or 3/8 copper tubing in near 
the bottom to form a spout. Make a dummy gas line 2-3 inches long  and screw 
it into the carb. Connect the two spouts with 3-4 feet of appropriate fuel 
hose, fill the can with gas an hang it from the open hood latch with some 
wire. Now see if it will run. If it runs OK then the problem is in the 
delivery system. Look for air leaks in the gas line that runs up through the 
car, rust pin holes, split or cracked rubber connectors, etc. An air leak 
will cause the pump to lose its prime under load and fuel delivery to the 
carb will be inconsistent. Look at the fuel pump once your assured that the 
lines are OK.

If it doesn't run the problem is in the carb. Take the top back off the carb 
and make sure the floats have some "drop." There is a tang at the  
needle/seat end of the float to set the drop. If there is little drop, the 
needles are pinned shut and the fuel can't get into the carb. Also, make 
sure that the needle/seat assemplies are screwed in tight. If either/both 
are loose they will unscrew themselves outward and pin the float to the 
bottom of the fuel bowl, again cutting off the gas entry. Good luck.

>From: "Ryan Hill" <ryan_hillc300@xxxxxxxxxxx>
>To: Chrysler300@xxxxxxxxxxxxxxx
>Subject: [Chrysler300] Weird Carter carb problem - '65 300
>Date: Mon, 09 May 2005 01:25:03 -0700
laurence_g_johnson=hotmail.com@xxxxxxxxxxxxxxxxxxxxxxxx
>
>Hopefully someone out there will be able to shed some light on this 
>problem.
>I just fired up my freshly rebuilt engine last week for the first time. It
>started right up after priming the carb a few times and ran quite well 
>while
>I broke-in the cam and watched for problems. I started the car several 
>times
>and put it back in the garage. I'll add that the carb was also rebuilt by
>me.
>
>The following day I went to start her back up and discovered it would only
>fire when primed with a squirt of fuel and then would stall. The throttle
>pump squirters didn't seem to be working. Removed the top of the carb and
>checked for fuel. Fuel was present in the bowls, needle and seats were
>functioning. When I investigated further, noticed the new plunger I had
>installed was faulty and after reinstalling the original, all was well with
>the squirters.
>
>After putting it all back together, the car will still only run on the fuel
>I prime it with OR if I pump the throttle a few times to squirt a little
>fuel in it will run on that, then stall. If I trickle fuel in manually it
>will also continue running but doesn't run on it's own any longer.
>
>Any guesses? The fuel pump is pumping fuel but I'm wondering if it's just
>not pumping enough? It is one of the few parts I didn't replace or rebuild.
>What would cause a carb to not provide enough fuel at idle to keep the car
>running? Remember also, it was working well when I first broke in the cam
>just hours earlier. Is there an easy way to check for adequate fuel
>pressure?
>
>Any help would be greatly appreciated!
>
>Ryan Hill (Vancouver)
>
>




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