Re: [Chrysler300] 300c

[Gary Nelson <Gary@xxxx>]

Vince

One more thing to look at that has not been mentioned. If not very careful 
when rebuilding carbs it is easy to have a float dragging on side of float 
bowl. All it takes is one of the eight floats dragging and it will flood at 
idle and stall. Give it a little throttle and it will clean up as you 
described. Then it will flood and stall again. When I am setting float 
height with air horn upside down I look straight down over each float to 
make sure they are centered between the gasket on each side. The connector 
bar between floats is very easy to bend and unknowingly will drag on side 
of bowl.
This happened to me. Before you do anything drastic, worth looking into.
Good luck.

Gary

At 10:32 PM 9/15/2002 -0400, Laurence G. Johnson wrote:
> Here are some things to look at when the engine runs out of fuel idling. The
> root causes of this problem are - low fuel level in either or both carbs, -
> low intake manifold vacuum insufficient to support the idle circuits in the
> carbs.
>
> - Plug a vacuum gage into the intake anywhere below the carb throttle
> plates and read the vacuum level at idle with throttle plates closed.
> If the vacuum is above approx 15 ins, move on. If low, look for an
> intake vacuum leak at the cylinder head gaskets, or the carb base
> gaskets, or in any of the attached vacuum hoses. If OK, suspect the
> new camshaft. It could have too much duration or overlap which kills
> intake vacuum. It could also be installed wrong, a couple of teeth
> off will lower the vacuum too. If nothing here, move on the the
> carbs.
>
> - These old WCFB's have brass sight plugs on the driver side which can
> be remover allowing you to observe the fuel levels in all 4 float
> bowls. Take them out and look for low fuel levels in the carbs. The
> fuel should just wet the threads at the bottom of the sight holes.
> If not, reset the float levels accordingly. Check the needle/seat
> assemblies to confirm that they are tight and haven't backed off
> lowering the float level. Good luck..
>
>
> >
> >I just finished installing a rebuilt (original engine) in my C. The cam
> >was
> >ground to original specs by iskenderian. Carbs are rebuilt (cleaned,new
> >gasket and seats),and all ignition parts new. The car starts instantly,
> >but
> >I can't get the idle low enough without stalling. It does run well at a
> >fast
> >idle. It runs for about 5-10 sec and then simply can't get enough gas to
> >idle. Touching the accelerator linkage gives it a little gas from the
> >accelerator pump and it keeps running again for 5-10 seconds. When it is
> >fully warmed up, It is better, but not good enough. Turning the bleeders
> >out
> >doesn' t seem to help except I'm not sure how to do both carbs at the same
> >time. Anyone have any ideas? The car idled well before the rebuild with
> >the
> >same carbs. Does the overbore with the new cam cause a change in the low
> >speed jets? I'm open for ideas Thanks Vince
> >
>
>
>
>
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