[DeTomaso] Help!-Car stumbles, power loss---occasionally!
Panteratime
panteratime at aol.com
Fri May 12 07:38:41 EDT 2023
Folks,First-Thanks for all the quick and helpful feedback on my issue.
Since most information centers around "Fuel" and not timing , I'm going to replace my fancy Edelbrock Billet aluminum filter with another same filter unless you recommend another filter. My filter is very hard to get to behind the carb so I'd like to do it once. (I may have to cut the fuel line to get it off the fittings)!
I also understand the recommendation to remove the fuel gauge sender mechanism and replace with a 73 unit. Removing the side window is required? Best place to get the 73 unit?
Also-Sounds like there is a "sock" in bottom of tank that clogs up, I do have concerns with "Ripping" it out with a fish hook! (ok--I added the funny part about a fish hook!) How do you fish the remains out if its in pieces from trying to rip it out? Sounds like these fragments will clog the new filter right up if u miss a piece!
Thanks again for all you support!
-----Original Message-----
From: Jack DeRyke via DeTomaso <detomaso at server.detomasolist.com>
To: detomaso at server.detomasolist.com <detomaso at server.detomasolist.com>
Sent: Thu, May 11, 2023 2:17 pm
Subject: Re: [DeTomaso] Help!-Car stumbles, power loss---occasionally!
Sounds like the thing is temporarily going lean for some reason. One
problem well known in the Pantera world is the '71-72 cars having a
welded interior fuel-out line in the tank. Old cars that sit with gas
in them often get rust perforation of this non-replaceable steel fuel
line from water in old gas. That means that when the fuel level drops
below the rust pit(s), the fuel pump sucks air plus gas, resulting in
fuel starvation. If thats the problem, the fix is to replace the early
fuel gauge sender with the available '73-up sender. Which has a new
fuel feed line built into it. It is a bolt-in replacement.
Plus, on the bottom of the early in-tank line is a nylon 'sock' used as
a fuel filter. This builds up varnish and drastically cuts fuel flow.
This one is repairable: you pull the left side window for tank access
(the glass & frame only pushes in place) and remove the fuel sender.
Then reach into the tank thru the window & sender hole with some sort
of non-sparking 3-ft-long rod and rip the nylon sock off the bottom of
the welded line. Fish the remains out and you're done. Cheap but
time-consuming. Good luck-
-----Original Message-----
From: Panteratime via DeTomaso <detomaso at server.detomasolist.com>
To: detomaso at server.detomasolist.com <detomaso at server.detomasolist.com>
Sent: Thu, May 11, 2023 4:27 am
Subject: [DeTomaso] Help!-Car stumbles, power loss---occasionally!
Folks,
The vehicle:
1972 stock Pantera with Demon carb, Blaster ignition coil
Rarely driven car -maybe 1000 miles a year
The Owner:
(Average mechanic skills, I did install intake manifold, stainless
brake lines, Fluidyne aluminum radiator , plugs, Demon carb, etc when
I
bought car over 20 years ago)
I never touched a distributor!
The scenerio:
Took a really nice ride out east of Long Island to wineries with club
last Saturday. Full full tank of gas, oil level fine, car ran well.
All of a sudden on acceleration from a stop light the car stumbles
a
bit, loss of power, then rides great after it gets past a certain
point. Car runs fine at speed, stumbled occasionally a few more
times
on acceleration as trip went on. I also noticed a higher idle than
normal. (Temp a bit higher than normal as well, thought maybe cause
idle was too high) (One time I had dieseling after shut off). The
guys asked how long since I changed my points and I said I never did.
They recommended removing the bulkhead and checking the timing and
looking at the points and possible stuck float bulb in carb. (I'll
change my belts when bulkhead is off as well)
Then the conversation went to changing to electronic ignition, set em
n
forget em.
The Ask:
* Any other suggestions on what issue may be?
* Thoughts on electronic ignition and/or what brand electronic
ignition you all recommend
* Any thing to look at with carb?
Thank you in advance!
Cliff NY
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-------------- next part --------------
Folks,
First-Thanks for all the quick and helpful feedback on my issue.
Since most information centers around "Fuel" and not timing , I'm going
to replace my fancy Edelbrock Billet aluminum filter with another same
filter unless you recommend another filter. My filter is very hard to
get to behind the carb so I'd like to do it once. (I may have to cut
the fuel line to get it off the fittings)!
I also understand the recommendation to remove the fuel gauge sender
mechanism and replace with a 73 unit. Removing the side window is
required? Best place to get the 73 unit?
Also-Sounds like there is a "sock" in bottom of tank that clogs up, I
do have concerns with "Ripping" it out with a fish hook! (ok--I added
the funny part about a fish hook!) How do you fish the remains out if
its in pieces from trying to rip it out? Sounds like these fragments
will clog the new filter right up if u miss a piece!
Thanks again for all you support!
-----Original Message-----
From: Jack DeRyke via DeTomaso <detomaso at server.detomasolist.com>
To: detomaso at server.detomasolist.com <detomaso at server.detomasolist.com>
Sent: Thu, May 11, 2023 2:17 pm
Subject: Re: [DeTomaso] Help!-Car stumbles, power loss---occasionally!
Sounds like the thing is temporarily going lean for some reason. One
problem well known in the Pantera world is the '71-72 cars having a
welded interior fuel-out line in the tank. Old cars that sit with gas
in them often get rust perforation of this non-replaceable steel fuel
line from water in old gas. That means that when the fuel level drops
below the rust pit(s), the fuel pump sucks air plus gas, resulting in
fuel starvation. If thats the problem, the fix is to replace the
early
fuel gauge sender with the available '73-up sender. Which has a new
fuel feed line built into it. It is a bolt-in replacement.
Plus, on the bottom of the early in-tank line is a nylon 'sock' used
as
a fuel filter. This builds up varnish and drastically cuts fuel flow.
This one is repairable: you pull the left side window for tank access
(the glass & frame only pushes in place) and remove the fuel sender.
Then reach into the tank thru the window & sender hole with some sort
of non-sparking 3-ft-long rod and rip the nylon sock off the bottom
of
the welded line. Fish the remains out and you're done. Cheap but
time-consuming. Good luck-
-----Original Message-----
From: Panteratime via DeTomaso <[1]detomaso at server.detomasolist.com>
To: [2]detomaso at server.detomasolist.com
<[3]detomaso at server.detomasolist.com>
Sent: Thu, May 11, 2023 4:27 am
Subject: [DeTomaso] Help!-Car stumbles, power loss---occasionally!
Folks,
The vehicle:
1972 stock Pantera with Demon carb, Blaster ignition coil
Rarely driven car -maybe 1000 miles a year
The Owner:
(Average mechanic skills, I did install intake manifold, stainless
brake lines, Fluidyne aluminum radiator , plugs, Demon carb, etc
when
I
bought car over 20 years ago)
I never touched a distributor!
The scenerio:
Took a really nice ride out east of Long Island to wineries with
club
last Saturday. Full full tank of gas, oil level fine, car ran
well.
All of a sudden on acceleration from a stop light the car
stumbles
a
bit, loss of power, then rides great after it gets past a certain
point. Car runs fine at speed, stumbled occasionally a few more
times
on acceleration as trip went on. I also noticed a higher idle than
normal. (Temp a bit higher than normal as well, thought maybe
cause
idle was too high) (One time I had dieseling after shut off). The
guys asked how long since I changed my points and I said I never
did.
They recommended removing the bulkhead and checking the timing and
looking at the points and possible stuck float bulb in carb. (I'll
change my belts when bulkhead is off as well)
Then the conversation went to changing to electronic ignition, set
em
n
forget em.
The Ask:
* Any other suggestions on what issue may be?
* Thoughts on electronic ignition and/or what brand electronic
ignition you all recommend
* Any thing to look at with carb?
Thank you in advance!
Cliff NY
_______________________________________________
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Posted emails must not exceed 1.5 Megabytes
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any
message posted here to all past, current, or future members of the
list. They also grant the list owner permission to maintain an
archive
or approve the archiving of list messages.
References
1. mailto:DeTomaso at server.detomasolist.com
2. [4]http://server.detomasolist.com/mailman/listinfo/detomaso
_______________________________________________
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Members who post to this list grant license to the list to forward any
message posted here to all past, current, or future members of the
list. They also grant the list owner permission to maintain an archive
or approve the archiving of list messages.
References
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2. mailto:detomaso at server.detomasolist.com
3. mailto:detomaso at server.detomasolist.com
4. http://server.detomasolist.com/mailman/listinfo/detomaso
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