Re: IML: '68 Rough Running/Mine also

[louis colon <luis10241@xxxxxxxxx>]

Hi Imperial Lovers,

I have a similer problem that David has but mine does not start unless I have the gas pedel half way. She just putts and if I floor it it will back fire. This just started out of nowhere. the car always has started and run fine until a couple of weeks ago. i car did sit for a while in the winter and is parked on 33% slope back first. I have the holly carb on it and was planning to change it to a better carb because the holly gave the 440,s trouble. You guys think it the carburator? It there a test that I can do find out what the problem is? What carb who you recommend. Spring is here and I want to get her going with the top down.

 

Thanks guys for all your help in advance.

David Duricy <desotobravo@xxxxxxxxx> wrote:

> Hello, everyone.
>
> I've decided that I would like
>  to enjoy the '68
> convertible on the road this season. To that end, I
> gave it ten gallons of fresh gas and have been trying
> to get the carb in tune. I rebuilt it last year.
>
> The car starts easily; it takes only a turn of the key
> when warm. When cold, just jab the accelerator then
> turn key. However, the idle is rough with a kind of
> surge that comes and goes. There is hesitation on
> throttle.
>
> The car has lots of power, which seems to come on
> suddenly and randomly during acceleration.
>
> I have capped off the manifold vacuum to the
> accessories in hopes of "curing" a vacuum leak, but
> the rough running remains.
>
> I have checked and re-checked the float level
>
> The fuel pump seems to be providing fuel in abundance.
>
> Timing is spot on.
>
> Every now and again, very briefly, the car will
> suddenly run silently and smoothly.
>
> What could be causing this poor running?
>
> In a related vein, the car has a
>  Carter AVS model 4429
> S carb. I am puzzeled the by the needles. They are
> white metal, like aluminum, rather than the usual
> brass. Their rubber points are small disks, rather
> than the points I see on other needles, like the ones
> that came in the rebuild kit. When I try to use the
> needles from the kit, they seem to be too large and
> jam the float action.
>
> Insights welcome.
>
> Best Regards,
> Dave Duricy
> desotoland.com
> 1968 Imperial Crown convertible
> 1973 Imperial LeBaron (retired from fleet?)
>
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Luis Colon
1968 Blue Convertable,1974 Chysler New Yorker.

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