[DeTomaso] Unhappy motor - looking for suggestions
Charles McCall
charlesmccall at gmail.com
Mon Nov 3 03:25:29 EST 2014
Forest - MSD 6AL
Thanks all!
On Mon, Nov 3, 2014 at 6:37 AM, Forest Goodhart <forestg at att.net> wrote:
> Charlie,
>
> What are you using for an ignition system? Points, duraspark, MSD?
>
> Forest
> From: Charles McCall <charlesmccall at gmail.com>
> To: detomaso at poca.com
> Sent: Sunday, November 2, 2014 11:13 AM
> Subject: [DeTomaso] Unhappy motor - looking for suggestions
> Hi all
> I just got back from a Supercar event in northern Spain with 35 cars
> attending - Lambo, Ferrari, Viper, Porsche, and, as usual, a lone
> DeTomaso!
> The highlight for me without a doubt was an 8-minute burst on the
> highway with the police clearing the way for us, cruising at a steady
> GPS-indicated 180 k/hr in a 35 car convoy... the people out for a
> Sunday drive must have had their minds boggled...
> Anyway, my engine is not happy. This morning in the hotel parking lot
> I
> really thought that we'd have to skip today's event because it
> wouldn't
> start and didn't sound like it was even thinking about starting. Took
> probably 5 minutes of crank-wait-crank-wait before it fired.
> Yesterday
> at the gas station it took 2-3 minutes to start, something that has
> never, ever happened before. It is really hard to describe the
> problem
> so much of it is "feel", but I'll do my best.
> A few weeks ago I noticed that the engine would tend to stumble if I
> would floor the throttle, then clear its throat and pull. For
> example,
> I like to heel-and-toe, just because, and when blipping the throttle
> it
> would stumble instead of rev. The engine also felt a little rougher,
> as
> though it vibrated more than I remembered it. I don't remember if
> this
> was before or after I did a short tune-up, by adjusting the valve
> lash
> (I have mechanical lifters), and cleaning the K&N air filter by
> applying K&N filter oil, etc. or if it is irrelevant. So I was
> messing
> around in the engine bay recently...
> This weekend the engine felt considerably worse. It felt like it
> would
> stumble under partial throttle as well. It would stumble a little bit
> under trailing throttle going downhill as well, so I don't think it
> is
> a clogged fuel filter.
> Oil temp is perfect. Oil pressure is perfect. Water temp is perfect.
> The engine idles perfectly. But if you floor the gas from idle, it'll
> stall. The engine doesn't feel crisp, it feels bloated and soft, if
> that makes sense. It feels rough, and it feels like it occasionally
> stumbles under constant throttle at highway speed. It pulls hard when
> accelerating, but I don't think as hard as it used to, or as high (I
> have a 6500 rpm limiting chip in the MSD that it used to pull very
> easily to).
> Suggestions for where to begin looking? And other info that would
> help
> in troubleshooting?
> _______________________________________________
> Detomaso Forum Managed by POCA
> DeTomaso mailing list
> [1]DeTomaso at poca.com
> [2]http://poca.com/mailman/listinfo/detomaso_poca.com
>
> References
>
> 1. mailto:DeTomaso at poca.com
> 2. http://poca.com/mailman/listinfo/detomaso_poca.com
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> DeTomaso mailing list
> DeTomaso at poca.com
> http://poca.com/mailman/listinfo/detomaso_poca.com
>
>
-------------- next part --------------
Forest - MSD 6AL
A
Thanks all!
On Mon, Nov 3, 2014 at 6:37 AM, Forest Goodhart <[1]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 <[2]charlesmccall at gmail.com>
A A To: [3]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 _______________________________________________
A A Detomaso Forum Managed by POCA
A A DeTomaso mailing list
A A [1][4]DeTomaso at poca.com
A A [2][5]http://poca.com/mailman/listinfo/detomaso_poca.com
References
A A 1. mailto:[6]DeTomaso at poca.com
A A 2. [7]http://poca.com/mailman/listinfo/detomaso_poca.com
_______________________________________________
Detomaso Forum Managed by POCA
DeTomaso mailing list
[8]DeTomaso at poca.com
[9]http://poca.com/mailman/listinfo/detomaso_poca.com
References
1. mailto:forestg at att.net
2. mailto:charlesmccall at gmail.com
3. mailto:detomaso at poca.com
4. mailto:DeTomaso at poca.com
5. http://poca.com/mailman/listinfo/detomaso_poca.com
6. mailto:DeTomaso at poca.com
7. http://poca.com/mailman/listinfo/detomaso_poca.com
8. mailto:DeTomaso at poca.com
9. http://poca.com/mailman/listinfo/detomaso_poca.com
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