[DeTomaso] Resurrection

[Roger]

Hi Charlie
I would say that your problem is definitely carb related, I would bet my last cent that for some reason the carb is flooding, hence the black smoke.possibly a sticking or worn float needle. Next time it does it I would stop and just pull any plug, wou will probably see that it is very black an sooty
Roger

Sent from  Roger's iPhone

On 14 Apr 2013, at 20:31, "Mikael" <mikael_hass at mail.tele.dk> wrote:

> Some thoughts...
> 
> If it's like a switch being thrown as opposed to something that creeps up on
> you, that usually indicates ignition, not carb. Regardless:
> Carb: the feel of missing cylinders and having to rev it to keep it alive
> and black soot, I've tried that in a boat I bought with a Dominator, it was
> hardened power valve. But it was all the time...
> Could also be fuel bowls overflowing due to dirt, you need that fuel filter.
> Dirt could disappear again, thereby fixing itself until next time. Any sign
> of overflow? Like dirt on the intake, major engine fires?!?!
> Ignition: I had something similar on my Longchamp for a while with a Mallory
> electronic distr, the problem disappeared when I fixed a not too good
> battery ground wire. My starting when hot problems also disappeared. The
> simple things...
> 
> If none of the above helps, I would borrow or buy ignition components until
> fixed
> 
> Mikael
> 
> -----Oprindelig meddelelse-----
> Fra: Charles McCall [mailto:charlesmccall at gmail.com] 
> Sendt: 14. april 2013 15:17
> Til: detomaso at poca.com
> Emne: [DeTomaso] Resurrection
> 
> 1) ..and on the third day, they pushed the rock aside (opened the garage
> door) and found the cave empty with the exception of a loincloth (California
> Car Cover). The Pantera has come back to life again, for the first time of
> the year! 
> 
> 
> 
> 2) Resurrection of a subject kicked around last year but without coming to
> conclusions.. My engine for the past couple of years has had an intermittent
> problem where it feels like a couple of cylinders cut out. I'd like to
> resurrect the subject to see if we can come up with some new ideas. 
> 
> 
> 
> At first I suspected it was a fuel issue, and disassembled the carb. I did
> find a lot of very fine powder in the float bowls, which I cleaned out, and
> installed a fuel filter. 
> 
> 
> 
> I changed the spark plugs to rule out a fouling or failing plug. I haven't
> changed the wires. 
> 
> 
> 
> Symptoms - car can run fine for hours or days or months. Then it feels like
> a switch has been thrown and one or perhaps two cylinders stop firing. I
> have to put my foot into it to keep the engine running. Black smoke comes
> out the exhaust, and it I let the revs drop below 2000, the engine will die.
> This may last for as little as 5 minutes, or as long as 20, although the
> rough running tends to be interrupted by arriving at my destination. But as
> quickly as the problem arrives, it suddenly heals itself, the engine goes
> back to firing on all cylinders, idles happily at 1000rpm, and all is well.
> Perhaps for a day, perhaps for a month, or perhaps for an hour. 
> 
> 
> 
> My engine - 351C, Compcamps 282S cam, Aussie 2v closed chamber heads, Weiand
> Excelerator intake, Holley 700DP, MSD 6AL, MSD coil. Motorcraft AF42 plugs.
> MSD plug wires. 
> 
> 
> 
> We had just started talking about whether MSD boxes could act like this when
> the thread dropped off last year. If this isn't fuel related and is spark
> related, what can I check? 
> 
> 
> 
> Thanks!
> 
> 
> 
> Charles McCall
> Raising Pantera Awareness Across Europe
> 1985 DeTomaso Pantera #9375
> <http://www.poca.com/index.php/gallery/?g2_itemId=2323>
> http://www.poca.com/index.php/gallery/?g2_itemId=2323
> 
> 
> 
> 
> 
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