[DeTomaso] Unhappy motor - looking for suggestions

[Mike Drew]

Fwiw I always carry my spare, rebuilt MSD box with me. That ensures that something other than the MSD will break instead...:)

Mike

Sent from my iPhone

On Nov 3, 2014, at 0:52, Charles McCall <charlesmccall at gmail.com> wrote:

>   PS - I have a spare, and recently rebuilt 6AL sitting at home.
> 
>   On Mon, Nov 3, 2014 at 9:25 AM, Charles McCall
>   <[1]charlesmccall at gmail.com> wrote:
> 
>   Forest - MSD 6AL
>   A
>   Thanks all!
> 
>   On Mon, Nov 3, 2014 at 6:37 AM, Forest Goodhart <[2]forestg at att.net>
>   wrote:
> 
>     A  A Charlie,
>     A  A What are you using for an ignition system? Points, duraspark,
>     MSD?
>     A  A Forest
>     A  A From: Charles McCall <[3]charlesmccall at gmail.com>
>     A  A To: [4]detomaso at poca.com
>     A  A Sent: Sunday, November 2, 2014 11:13 AM
>     A  A Subject: [DeTomaso] Unhappy motor - looking for suggestions
>     A  A  A Hi all
>     A  A  A I just got back from a Supercar event in northern Spain with
>     35 cars
>     A  A  A attending - Lambo, Ferrari, Viper, Porsche, and, as usual, a
>     lone
>     A  A  A DeTomaso!
>     A  A  A The highlight for me without a doubt was an 8-minute burst
>     on the
>     A  A  A highway with the police clearing the way for us, cruising at
>     a steady
>     A  A  A GPS-indicated 180 k/hr in a 35 car convoy... the people out
>     for a
>     A  A  A Sunday drive must have had their minds boggled...
> 
>   A  A  A Anyway, my engine is not happy. This morning in the hotel
>   parking lot
>   A  A I
>   A  A  A really thought that we'd have to skip today's event because it
>   A  A wouldn't
>   A  A  A start and didn't sound like it was even thinking about
>   starting. Took
>   A  A  A probably 5 minutes of crank-wait-crank-wait before it fired.
>   A  A Yesterday
>   A  A  A at the gas station it took 2-3 minutes to start, something that
>   has
>   A  A  A never, ever happened before. It is really hard to describe the
>   A  A problem
>   A  A  A so much of it is "feel", but I'll do my best.
>   A  A  A A few weeks ago I noticed that the engine would tend to stumble
>   if I
>   A  A  A would floor the throttle, then clear its throat and pull. For
>   A  A example,
>   A  A  A I like to heel-and-toe, just because, and when blipping the
>   throttle
>   A  A it
>   A  A  A would stumble instead of rev. The engine also felt a little
>   rougher,
>   A  A as
>   A  A  A though it vibrated more than I remembered it. I don't remember
>   if
>   A  A this
>   A  A  A was before or after I did a short tune-up, by adjusting the
>   valve
>   A  A lash
>   A  A  A (I have mechanical lifters), and cleaning the K&N air filter by
>   A  A  A applying K&N filter oil, etc. or if it is irrelevant. So I was
>   A  A messing
> 
>     A  A  A around in the engine bay recently...
>     A  A  A This weekend the engine felt considerably worse. It felt
>     like it
>     A  A would
>     A  A  A stumble under partial throttle as well. It would stumble a
>     little bit
>     A  A  A under trailing throttle going downhill as well, so I don't
>     think it
>     A  A is
>     A  A  A a clogged fuel filter.
>     A  A  A Oil temp is perfect. Oil pressure is perfect. Water temp is
>     perfect.
>     A  A  A The engine idles perfectly. But if you floor the gas from
>     idle, it'll
>     A  A  A stall. The engine doesn't feel crisp, it feels bloated and
>     soft, if
>     A  A  A that makes sense. It feels rough, and it feels like it
>     occasionally
>     A  A  A stumbles under constant throttle at highway speed. It pulls
>     hard when
>     A  A  A accelerating, but I don't think as hard as it used to, or as
>     high (I
>     A  A  A have a 6500 rpm limiting chip in the MSD that it used to
>     pull very
>     A  A  A easily to).
>     A  A  A Suggestions for where to begin looking? And other info that
>     would
>     A  A help
>     A  A  A in troubleshooting?
>     A  A _______________________________________________
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>     References
>     A  A 1. mailto:[7]DeTomaso at poca.com
>     A  A 2. [8]http://poca.com/mailman/listinfo/detomaso_poca.com
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> References
> 
>   1. mailto:charlesmccall at gmail.com
>   2. mailto:forestg at att.net
>   3. mailto:charlesmccall at gmail.com
>   4. mailto:detomaso at poca.com
>   5. mailto:DeTomaso at poca.com
>   6. http://poca.com/mailman/listinfo/detomaso_poca.com
>   7. mailto:DeTomaso at poca.com
>   8. http://poca.com/mailman/listinfo/detomaso_poca.com
>   9. mailto:DeTomaso at poca.com
>  10. http://poca.com/mailman/listinfo/detomaso_poca.com
> _______________________________________________
> 
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