Re: Missing cylinders

[Donald Gallimore <dongallimore@xxxxxxx>]

What cylinders are weak?  Blown head gasket if they are adjacent.

Burnt valves - had that happen to a car and under anything but the 
slightest acceleration, it back fired.

Lastly, if the ignition module was bad, why would it only affect the one three 
specific cylinders. I'd eliminate that as a problem.
 
Akron Don Gallimore



----- Original Message ----
> From: Jim Altemose <jaltemoose@xxxxxxxxx>
> To: 1962to1965mopars@xxxxxxxxxxxxxxxx
> Sent: Tue, November 22, 2011 5:10:16 PM
> Subject: Re: Missing cylinders
> 
> Thanks Stan.
> 
> A backfire now and then but not normally.  Maybe a little more now
> that I have 3 missing but I haven't run it much other than idle since
> this started.  BTW, I have about 82,000 on the original motor.  I use
> NAPA gold synthetic oil with ZDDP additive.  But I've only put about
> 6,000 or so on it.
> 
> I'll try pulling the valve covers, thanks.
> 
> - Jim
> Jim Altemose, Long Island, NY
> '63 Polara 500 (Max Wedge)
> '63 Polara 500 (383)
> '65 Belvedere I (Street Wedge)
> '71 Bronco
> 
> On Tue, Nov 22, 2011 at 4:58 PM, Stan Kafouse <skafouse@xxxxxxxxx> wrote:
> > Pull your valve covers and check  to see you have not wiped the cam.  Spin
> > the engine over and see what the valves are or are not doing. Valvoline
> > racing blend is whats needed to run a flat tappet cam. It has the zinc and
> > phospate needed.  If the valves are not or barely opening the the valve
> > timing is all over the place. Thus a very rough idle. Is it back firing thru
> > the carb when you rev it up? Back firing thru exhaust?
> > From: Jim Altemose <jaltemoose@xxxxxxxxx>
> > To: 1962to1965mopars@xxxxxxxxxxxxxxxx
> > Sent: Tuesday, November 22, 2011 4:51 PM
> > Subject: Missing cylinders
> >
> > 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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> --
> 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:
> http://www.1962to1965mopar.ornocar.org/mletiq.html and 
>http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
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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:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.
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