Re: [Chrysler300] Distributor Cap, 300G

[Mark Souders <MRS954@xxxxxxx>]

Hey, I just realized this is the same problem I had this past summer with my 64 300. Upon attempted rapid acceleration, it would bog out and stall. I repaired or replaced everything until I finally found the real problem. It needed a vacuum advance chamber. The original one was sucking air. I checked the local discounters, and found that NAPA had a new chamber for $49 and a complete distributor for $44. It was a no-brainer for me. I got the new distributor. The problem disappeared after I installed it and set it up. Check it out, maybe yours is the same problem.

Regards,
Mark


-----Original Message-----
From: RLS <obiwan10@xxxxxxxxxxx>
To: Bob Jasinski <rpjasin@xxxxxxxxxxx>; 'Paul Weihl' <pweihl@xxxxxxxxxxx>; Chrysler300@xxxxxxxxxxxxxxx; Bill Huff <czbill@xxxxxxxxxx>
Sent: Thu, 11 Dec 2008 12:29 am
Subject: Re: [Chrysler300] Distributor Cap, 300G



Both going up uphill and sudden opening of the throttle will cause a major 
decrease in engine vacuum.  This will then cause the breaker plate in the 
distributor to move as the timing is retarded.  Have you checked to find if the 
wire to the points is good and is not slightly separating when the breaker plate 
moves.  Is the screw that holds the wire to the points tight?

Was initial timing set with the vacuum line to the distributor disconnected(this 
is required when vacuum signal is continuous when the throttle is closed,,,non 
ported).  If not disconnected at timing set time, it is possible that you are 
running with severely retarded timing when the throttle is opened and vacuum 
decreases, which could cause engine to stall.

Is exhaust system stopped up in anyway?

What carb are you running, likely a Carter??  Holley's have a power valve that 
opens to enrich the mixture at low vacuum.  I do not know mechanism in Carter to 
do likewise, but it certainly must exist.  If this system is failing, this might 
cause your condition.

Fuel pump pressure or volume ok?   Bob J's idea on fuel filter is another.  
Float levels ok(3 time carb rebuild they better be!).

Coil ok?  High cylinder pressure from sudden acceleration with weak spark could 
blow out the fire.  Ignition switch and ignition wire to coil ok?

Did this problem begin suddenly or had you made some change to something and 
then it began?  What was situation leading up to the problem.  Was all well and 
then failure?

Gas ok, no water in it?

Put a vacuum gauge on engine, how much vacuum at idle and what happens when you 
suddenly open the throttle(before engine stalls).

My best guess of all above is distributor or wiring to it or power circuit in 
carb.  I did not read all the prior responses, so if some of my thoughts are 
repeats, please disregard.


  ----- Original Message ----- 
  From: Bill Huff 
  To: Bob Jasinski ; 'Paul Weihl' ; Chrysler300@xxxxxxxxxxxxxxx 
  Sent: Wednesday, December 10, 2008 3:47 PM
  Subject: RE: [Chrysler300] Distribut
or Cap, 300G


  If the carburetors were rebuilt properly, and if there is adequate 
  fuel squirt from the accelerator pumps, it should not be a fuel 
  starvation problem between the tank and the carb inlet. It takes a 
  short while to empty the float bowls and the engine is dying on 
  acceleration from idle. You could fill the carbs, disconnect the 
  fuel line and probably drive several hundred feet before the engine 
  died. To eliminate the carbs as a source, trying known good ones is 
  best, but obviously that may not be readily possible. When the 
  engine dies, does it backfire? There may be known specific issues 
  with ram cars that could cause this.

  The car must run down the road or you wouldn't know that it won't go 
  up the hill. How is the power and response when accelerating 
  slowly? Will the car run up to speed and will it go up the hill with 
  slower application of throttle?

  I would still verify that the distributor's mechanical advance is not 
  stuck, being retarded will suck everything from an engine when accelerating.

  Bill Huff

  At 12/10/200804:11 PM, Bob Jasinski wrote:

  >Have you checked or replaced the fuel filters?
  >
  >Bob J
  >
  >_____
  >
  >From: 
  ><mailto:Chrysler300%40yahoogroups.com>Chrysler300@xxxxxxxxxxxxxxx 
  >[mailto:Chrysler300@xxxxxxxxxxxxxxx] On
  >Behalf Of Paul Weihl
  >Sent: Tuesday, December 09, 2008 6:31 PM
  >To: <mailto:Chrysler300%40yahoogroups.com>Chrysler300@xxxxxxxxxxxxxxx
  >Subject: [Chrysler300] Distributor Cap, 300G
  >
  >Thanks to all that responded to my question about correct plug wires to
  >distributor cap. With your suggestions, I have eliminated that problem,
  >everything was correct. My problem was, and still is, that the engine will
  >stall when sudden acceleration from idle and will stall when going up hill,
  >no power. I was sure it was in the ignition or vacuum advance, but not so.
  >Timing light shows vacuum advance works. Engine was rebuild about 1,000
  >miles ago so everything was either rebuild or new parts. Di
dn't have the
  >problem when work was completed. Carburetors were rebuild 3 times, timing
  >and dwell are within specs, accelerator pumps work like they should and
  >chokes open as engine warms up. Engine starts easy and idles smooth. I have
  >tried everything I could think of, guess I'm still missing something. Hoping
  >someone had a similar problem that they fixed or can offer some suggestion
  >to get this beast running correctly. Again, any and all suggestion will be
  >greatly appreciated. Thanks!
  >
  >Paul
  >
  >[Non-text portions of this message have been removed]
  >
  >[Non-text portions of this message have been removed]
  >
  >

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