[DeTomaso] Unhappy motor - looking for suggestions
Charles McCall
charlesmccall at gmail.com
Mon Nov 3 03:52:59 EST 2014
PS - I have a spare, and recently rebuilt 6AL sitting at home.
On Mon, Nov 3, 2014 at 9:25 AM, Charles McCall <charlesmccall at gmail.com>
wrote:
> 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 --------------
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 _______________________________________________
A A Detomaso Forum Managed by POCA
A A DeTomaso mailing list
A A [1][5]DeTomaso at poca.com
A A [2][6]http://poca.com/mailman/listinfo/detomaso_poca.com
References
A A 1. mailto:[7]DeTomaso at poca.com
A A 2. [8]http://poca.com/mailman/listinfo/detomaso_poca.com
_______________________________________________
Detomaso Forum Managed by POCA
DeTomaso mailing list
[9]DeTomaso at poca.com
[10]http://poca.com/mailman/listinfo/detomaso_poca.com
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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