Re: Missing cylinders

[Gary Wilson <gwwilson70@xxxxxxxxx>]

Best way is a compression test.   Sounds like you may have a cam going flat.  Check and make sure push rods are all moving up and down

On Tue, Nov 22, 2011 at 1:51 PM, Jim Altemose <jaltemoose@xxxxxxxxx> wrote:

My 63 Polara with 383 4 barrel AFB has been running rougher and
rougher.  I'm now missing on 3 cylinders.  I'm going to be doing some
deeper diagnosing over the holiday weekend but I'm hoping to get some
initial thoughts.  I had enough time the other day to pull plug wires
from the distributor while idling.  For sure 3 cylinders are missing;
when I pulled them it made no difference in the rough idle.  They ARE
getting a spark at least when I hold the end of the cable over the
vacant distributor hole.  I didn't have time to figure out exactly
which cylinders are missing; I'll do that this weekend.

Plug wires are only 2 years old.  So is rotor and distributor cap and
plugs.  My plan over the weekend is to pull the plugs and check for
fouling.  Then I was going to check the timing.  Someone suggested the
ignition module might be the culprit.  Does this make sense?  Is NAPA
a good source or should I be looking elsewhere?  I don't have points;
I have the 'magneto' inside the distributor but I'm not sure whether
it's Pertronix or what; I'll post a picture.  It was there already
when I bought it.

If plugs are wet and fouled, I thought I'd try to adjust the idle
mixture, which I'd been planning on doing.

Any tips on what I should be looking for that would cause 3 cylinders
to miss?  Maybe vacuum leak?  I was missing 1 or 2 at first, then the
3rd went.  I'm surprised it runs as much as it does on 5.

As always, thanks.

- Jim
Jim Altemose, Long Island, NY
'63 Polara 500 (Max Wedge)
'63 Polara 500 (383)
'65 Belvedere I (Street Wedge)
'71 Bronco

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Gwwilson

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Please address private mail -- mail of interest to only one person -- directly to that person. That is, 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!
 
1962 to 1965 Mopar Clubhouse Discussion Guidelines:
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