RE: 383 running rough?

[Steven Charette <stevec@xxxxxxxxxxxxxxxxxxxx>]

Jim,
	Sounds like it's rich when the choke is on (cold).  Depending on
which AFB you have there is a cold setting spec. for the choke pull-off (the
little vacuum diaphragm with the vacuum hose running to it).  Generally you
pull the pull-off back by hand (or by applying vacuum to the hose) and
measure the opening at the upper edge of the choke plate, between the choke
plate and the air horn.  This is easily measured using drill bits.  

	If you don't have the setting for your specific carb, you can start
by increasing the opening mentioned above in very small increments until the
engine runs smoothly when cold.  This is likely to be a long an tedious
process, but without a spec to go by you're in "hit and miss" mode.

	Increase the opening by gently squeezing (closing) the "U" shaped
portion of the vacuum pull-off rod - it is the small diameter rod that goes
from the choke plate lever to the end of the vacuum pull-off (opposite end
from the vacuum hose).  If you get to the point that the car won't stay
running cold, you've gone too far and need to open the "U" up a bit.
	If you have a drill index, shoot to open the gap 1/16" with each
adjustment until she runs smooth.

	Just bear in mind that we're talking very minute adjustments.  Too
many large adjustments will have you looking for a new "U" shaped rod.

	Clear as mud?

SC  

-----Original Message-----
From: Gary H. [mailto:spigot2039@xxxxxxxxxxx] 
Sent: Sunday, December 13, 2009 12:59 PM
To: 1962to1965mopars@xxxxxxxxxx
Subject: Re: 383 running rough?


Jim's gmail settings are probably set to rich text or HTML, and Topica won't
send that format. 

Here is Jim's mail:

============================================================================
==
"It took a while, but I just finished converting my 63 Polara 500 383 from a
two to four barrel with a Carter AFB.

The good news is it runs.  The bad news is it's very rough when it's first
started like it's missing a cylinder or two.  I'm not as experienced as most
of you and I'm looking for advice on where to begin diagnosing.

When I first start it, the engine is missing and shakes back and forth,
which I'm sure isn't good for it.  Yesterday after idling for about ten
minutes it gradually fixed itself and then ran real smooth while warm.
Today after starting up, it's rough again.  After idling for about 5
minutes, it wasn't improving so I shut it down; I don't want to cause any
damage.  It's about 30 degrees outside.  The exhaust seems a little 'black',
but I haven't run it for about 6 months up until the 20 minutes yesterday.

Thanks in advance for any advice.

- Jim
Jim Altemose, Long Island, NY"
============================================================================
=====

Thanks,
Gary H.


-----Original Message-----
 
>Jim,
 
>YOU SHOT A BLANK!
 
>Herb
>
>
>
>-------Original Message-------
>
>From: Jim Altemose
>
>Date: 12/13/2009 10:11:38 AM
>
>To: 1962to1965mopars
>
>Subject: 383 running rough?
>
>[Non-text portions of this message have been removed]


----
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----
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.