[DeTomaso] RV: A question I'm hoping you can answer

Charles McCall charlesmccall at gmail.com
Thu Feb 17 14:30:23 EST 2011


I don't use Sta-bil. 

I do have that problem. Do you think we may be on to something? 

Charles McCall
1985 DeTomaso Pantera GT5-S #9375
"Raising Pantera Awareness Across Europe"
http://www.poca.com/index.php/gallery/?g2_itemId=2323

-----Mensaje original-----
De: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] En
nombre de Dave McManus
Enviado el: jueves, 17 de febrero de 2011 20:11
Para: 'Asa Jay Laughton'; detomaso at realbig.com
Asunto: Re: [DeTomaso] RV: A question I'm hoping you can answer

Mine has been under the blankets for 3 months. I always use Sta-Bil. 
Saturday I will fire it up for the first time. I have never had the problem
Charles has experienced. I will let you know after Saturday.
IndyDave

-----Original Message-----
From: Asa Jay Laughton [mailto:asajay at asajay.com] 
Sent: Wednesday, February 16, 2011 4:33 PM
To: detomaso at list.realbig.com
Subject: Re: [DeTomaso] RV: A question I'm hoping you can answer

Interesting.  So we have a hypothesis we need to test to.  Time to  
break out the scientific method tools.

I'd recommend the next time you let the engine sit for the month,  
prior to starting it up you pull all the plugs and replace them with  
brand new.  If the problem is not there, we can surmise the hypothesis  
is true and the problem has been identified albeit not resolved.

Asa Jay

Pantera Technical Research Institute, Pacific Northwest - Inland Empire

Quoting Charles McCall <charlesmccall at gmail.com>:

> Hi all,
>
>
>
> A few weeks ago we debated on the Forum what happens when you let your
> engine sit for months at a time without starting it. In my case, the
engine
> came to life cylinder-by-cylinder, and it literally took about 4-5 minutes
> before the engine was firing on all 8 cylinders.
>
>
>
> Starting the engine the following day it fired up immediately on all 8.
>
>
>
> Chuck Engels and I both have Chuck Nuytten carburetors on our cars (how
many
> Charles can we fit in one sentence?) and Chuck suggested that I write
Chuck
> to ask a carb expert what he thought.
>
> www.chucknuytten.com <http://www.chucknuytten.com/> . Both Chuck and I are
> very happy with their work.
>
>
>
> Here’s his reply. Sounds like the plug gets covered in dry gas-goo, and it
> takes a while to burn this gunk off.
>
>
>
> This also answers the hidden question of if my engine was telling me
> something by taking so long to wake up. Doesn’t sound like a weak spark,
> sounds like a gunked up spark plug that eventually burns clean

>
>
>
> Charles McCall
>
> 1985 DeTomaso Pantera GT5-S #9375
>
> "Raising Pantera Awareness Across Europe"
>
>  <http://www.poca.com/index.php/gallery/?g2_itemId=2323>
> http://www.poca.com/index.php/gallery/?g2_itemId=2323
>
>   _____
>
> De: Chuck Nuytten Carburetors - Tech [mailto:tech at chucknuytten.com]
> Enviado el: miércoles, 16 de febrero de 2011 21:10
> Para: Charles McCall
> Asunto: Re: A question I'm hoping you can answer
>
>
>
> Any car that is left unused for any length of time experiences drying up
of
> the fuel leaving a heavy slug or gunk.  This gets loosened up and flushed
> through the carburetor into the motor.  It is thick and nasty like old
oil.
> The missing you have recognized is the spark plug covered with this nasty
> stuff causing the spark plugs to miss-fire until it gets washed off and
> finally starts to ignite the cylinder once again.
>
>
>
> Fresh spark plugs installed once the motor has been started and allowed to
> run long enough to pass the gunk through the motor should clear up the
miss.
> The cylinder still has to be ignited to get the rings functioning properly
> to dry the inside of a missing cylinder.  Some times rust is formed above
> the top ring that needs to be passed out the exhaust port too.
>
>
>
> Let us know if you have any other questions.
>
>
>
> -Tech Dept.
>
> Chuck Nuytten Carburetors
>
> ----- Original Message -----
>
> From: Charles <mailto:charlesmccall at gmail.com>  McCall
>
> To: tech at chucknuytten.com
>
> Sent: Wednesday, February 16, 2011 9:41 AM
>
> Subject: A question I'm hoping you can answer
>
>
>
> Good afternoon Chuck
>
>
>
> I am a very satisfied customer of yours from several years ago and I have
a
> question that I’m hoping you can answer.
>
>
>
> A few weeks ago I started the engine of my Pantera (A Ford 351C) after not
> having started it for 3 or 4 months.
>
>
>
> It took a bit of cranking to get the engine to fire, which I perfectly
> understand. Over the months that it hasn’t been used, fuel evaporates from
> the carb bowls, the fuel line, and who knows where else so I can
understand
> that it may take a while for the mechanical fuel pump to fill the system.
>
>
>
> When you rebuilt my carb you milled off the choke, so my car has no choke.
> This is not a problem.
>
>
>
> When the engine finally fires, it ran on perhaps 5 cylinders for perhaps
60
> seconds, when a 6th cylinder joined the party. It ran very rugged for
> probably 2 minutes (real minutes) before another cylinder started to
> function properly. And it was probably 4-5 minutes before all cylinders
were
> contributing.
>
>
>
> In the meantime, the garage filled with exhaust fumes until the engine
began
> running on all 8 cylinders. My intake is a Weiand Xcelerator.
>
>
>
> I don’t believe that I have any problem with the engine or with my carb.
IF
> the engine is warm or has been used regularly, it starts immediately and
> runs on all 8 cylinders.
>
> Starting the engine the following day for example, it fired up
immediately.
> If I let it sit for 3 months, then it wakes slowly again.
>
>
>
> My question is more a philosophical question than anything else. What is
> happening that causes an engine that has not been started in 3 or 4 months
> to not fire on all cylinders until it warms up? With a common intake
plenum
> and a common carb, fuel should be reaching all cylinders. The whole root
of
> this question was that I was wondering if my engine was trying to tell me
> something – for example I have a weak spark in certain cylinders or ???
>
>
>
> If you could shed any light on this question I would be quite grateful.
And
> the DeTomaso forum would be grateful as well.
>
>
>
> Thank you!
>
>
>
> Charles McCall
>
> 1985 DeTomaso Pantera GT5-S #9375
>
> "Raising Pantera Awareness Across Europe"
>
>


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