Classic Mustangs List Archive

This read-only message was archived from a public mail list.
Mail From: dano (Dan O'Reilly)

I've been having ongoing battles with rough idle and stalls in my '66 289 2V.
I have a rebuilt Pony Carburetor on it. I finally really got down to brass
tacks today and correlated all the info on tuning things from Chilton, Hayes
and the Ford shop manual. Bottom line, I had a bit too much advance (I have
high-altitude jets) and the idle mixture was WAY off. So the advance is now
set to about 15 degrees (the 'Stang people around here say that's about
right, because of the altitude) and the mixture screws are at about 2 1/4
turns. The idle was also set about 75 rpm too high. The idle is better
(lots), but I can still stall it when I romp on the accelerator (although
not as easily or as often).

So, I guess I'm looking for more ideas. I've also, by the way, re-torqued
the intake manifold (it wasn't torqued properly). I've checked for vacuum
leaks all over (manifold/carb/carb spacer) with brake cleaner and had no
luck. No tell-tale hissing of vacuum, either. But I'm about 80% sure I
have a vacuum problem.

The other thing I'm suspicious of, frankly, is the fuel pump, maybe starving
the carb. I've noticed recently that at idle, I'm hearing a tinny rattle
from the fuel pump (I put a new one on when I was fixing up the engine last
year). It's really making me suspicious now. I have a new gas tank and
fuel pickup/sending unit along with a new fuel line from pump to carb (the
previous owner had the wrong carb on it). I did blow the existing tank-to-
pump line out with compressed air, and I ran an auxiliary inline can filter
for a couple tanks of gas. I've since removed that filter.

Could the PCV valve (also new) possibly be a problem? I've checked it, and
it seems to be OK. I also pulled the hose off the carb spacer and it killed
the engine dead (instantly way too lean). So, that may be grasping at
straws.

I'm also going to pull the plugs and see how they look. There's no miss in
the idle, or under acceleration, or at any engine speed.

Suggestions, please?

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO

This read-only message was archived from a public mail list.
Mail From: shawkins6 (Steve Hawkins)

The stalling sounds like an accelerator pump problem.

Steve Hawkins



-----Original Message-----
From: (email redacted)
[mailtoemail redacted)] On Behalf Of Dan
O'Reilly
Sent: Thursday, June 23, 2005 9:36 PM
To: (email redacted)
Subject: [CM] Rough Idle/Stall


I've been having ongoing battles with rough idle and stalls in my '66
289 2V. I have a rebuilt Pony Carburetor on it. I finally really got
down to brass tacks today and correlated all the info on tuning things
from Chilton, Hayes and the Ford shop manual. Bottom line, I had a bit
too much advance (I have high-altitude jets) and the idle mixture was
WAY off. So the advance is now set to about 15 degrees (the 'Stang
people around here say that's about right, because of the altitude) and
the mixture screws are at about 2 1/4 turns. The idle was also set
about 75 rpm too high. The idle is better (lots), but I can still stall
it when I romp on the accelerator (although not as easily or as often).

So, I guess I'm looking for more ideas. I've also, by the way,
re-torqued the intake manifold (it wasn't torqued properly). I've
checked for vacuum leaks all over (manifold/carb/carb spacer) with brake
cleaner and had no luck. No tell-tale hissing of vacuum, either. But
I'm about 80% sure I have a vacuum problem.

The other thing I'm suspicious of, frankly, is the fuel pump, maybe
starving the carb. I've noticed recently that at idle, I'm hearing a
tinny rattle from the fuel pump (I put a new one on when I was fixing up
the engine last year). It's really making me suspicious now. I have a
new gas tank and fuel pickup/sending unit along with a new fuel line
from pump to carb (the
previous owner had the wrong carb on it). I did blow the existing
tank-to-
pump line out with compressed air, and I ran an auxiliary inline can
filter for a couple tanks of gas. I've since removed that filter.

Could the PCV valve (also new) possibly be a problem? I've checked it,
and it seems to be OK. I also pulled the hose off the carb spacer and
it killed the engine dead (instantly way too lean). So, that may be
grasping at straws.

I'm also going to pull the plugs and see how they look. There's no miss
in the idle, or under acceleration, or at any engine speed.

Suggestions, please?

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO



_______________________________________________
Classic-mustangs mailing list (email redacted)
lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

This read-only message was archived from a public mail list.
Mail From: dano (Dan O'Reilly)

In what respect? What to look at?

At 09:16 PM 6/23/2005, Steve Hawkins wrote:
>The stalling sounds like an accelerator pump problem.
>
>Steve Hawkins
>
>
>
>-----Original Message-----
>From: (email redacted)
>[mailtoemail redacted)] On Behalf Of Dan
>O'Reilly
>Sent: Thursday, June 23, 2005 9:36 PM
>To: (email redacted)
>Subject: [CM] Rough Idle/Stall
>
>
>I've been having ongoing battles with rough idle and stalls in my '66
>289 2V. I have a rebuilt Pony Carburetor on it. I finally really got
>down to brass tacks today and correlated all the info on tuning things
>from Chilton, Hayes and the Ford shop manual. Bottom line, I had a bit
>too much advance (I have high-altitude jets) and the idle mixture was
>WAY off. So the advance is now set to about 15 degrees (the 'Stang
>people around here say that's about right, because of the altitude) and
>the mixture screws are at about 2 1/4 turns. The idle was also set
>about 75 rpm too high. The idle is better (lots), but I can still stall
>it when I romp on the accelerator (although not as easily or as often).
>
>So, I guess I'm looking for more ideas. I've also, by the way,
>re-torqued the intake manifold (it wasn't torqued properly). I've
>checked for vacuum leaks all over (manifold/carb/carb spacer) with brake
>cleaner and had no luck. No tell-tale hissing of vacuum, either. But
>I'm about 80% sure I have a vacuum problem.
>
>The other thing I'm suspicious of, frankly, is the fuel pump, maybe
>starving the carb. I've noticed recently that at idle, I'm hearing a
>tinny rattle from the fuel pump (I put a new one on when I was fixing up
>the engine last year). It's really making me suspicious now. I have a
>new gas tank and fuel pickup/sending unit along with a new fuel line
>from pump to carb (the
>previous owner had the wrong carb on it). I did blow the existing
>tank-to-
>pump line out with compressed air, and I ran an auxiliary inline can
>filter for a couple tanks of gas. I've since removed that filter.
>
>Could the PCV valve (also new) possibly be a problem? I've checked it,
>and it seems to be OK. I also pulled the hose off the carb spacer and
>it killed the engine dead (instantly way too lean). So, that may be
>grasping at straws.
>
>I'm also going to pull the plugs and see how they look. There's no miss
>in the idle, or under acceleration, or at any engine speed.
>
>Suggestions, please?
>
>---
>
>Dan O'Reilly
>1966 Nightmist Blue Pony Coupe
>2002 Black Deluxe Convertible
>Colorado Springs, CO
>
>
>
>_______________________________________________
>Classic-mustangs mailing list (email redacted)
>lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs
>
>_______________________________________________
>Classic-mustangs mailing list
>(email redacted)
>lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO

This read-only message was archived from a public mail list.
Mail From: shawkins6 (Steve Hawkins)

The pump on the carb may not be set right. You may not be getting
enough gas during the transfer from the idle circuit to the main jets.

Steve Hawkins



-----Original Message-----
From: (email redacted)
[mailtoemail redacted)] On Behalf Of Dan
O'Reilly
Sent: Thursday, June 23, 2005 11:15 PM
To: A list for owners of Classic Mustangs
Cc: 'A list for owners of Classic Mustangs'
Subject: RE: [CM] Rough Idle/Stall


In what respect? What to look at?

At 09:16 PM 6/23/2005, Steve Hawkins wrote:
>The stalling sounds like an accelerator pump problem.
>
>Steve Hawkins
>
>
>
>-----Original Message-----
>From: (email redacted)
>[mailtoemail redacted)] On Behalf Of Dan

>O'Reilly
>Sent: Thursday, June 23, 2005 9:36 PM
>To: (email redacted)
>Subject: [CM] Rough Idle/Stall
>
>
>I've been having ongoing battles with rough idle and stalls in my '66
>289 2V. I have a rebuilt Pony Carburetor on it. I finally really got
>down to brass tacks today and correlated all the info on tuning things
>from Chilton, Hayes and the Ford shop manual. Bottom line, I had a bit

>too much advance (I have high-altitude jets) and the idle mixture was
>WAY off. So the advance is now set to about 15 degrees (the 'Stang
>people around here say that's about right, because of the altitude) and

>the mixture screws are at about 2 1/4 turns. The idle was also set
>about 75 rpm too high. The idle is better (lots), but I can still
>stall it when I romp on the accelerator (although not as easily or as
>often).
>
>So, I guess I'm looking for more ideas. I've also, by the way,
>re-torqued the intake manifold (it wasn't torqued properly). I've
>checked for vacuum leaks all over (manifold/carb/carb spacer) with
>brake cleaner and had no luck. No tell-tale hissing of vacuum, either.

>But I'm about 80% sure I have a vacuum problem.
>
>The other thing I'm suspicious of, frankly, is the fuel pump, maybe
>starving the carb. I've noticed recently that at idle, I'm hearing a
>tinny rattle from the fuel pump (I put a new one on when I was fixing
>up the engine last year). It's really making me suspicious now. I
>have a new gas tank and fuel pickup/sending unit along with a new fuel
>line from pump to carb (the
>previous owner had the wrong carb on it). I did blow the existing
>tank-to-
>pump line out with compressed air, and I ran an auxiliary inline can
>filter for a couple tanks of gas. I've since removed that filter.
>
>Could the PCV valve (also new) possibly be a problem? I've checked it,

>and it seems to be OK. I also pulled the hose off the carb spacer and
>it killed the engine dead (instantly way too lean). So, that may be
>grasping at straws.
>
>I'm also going to pull the plugs and see how they look. There's no
>miss in the idle, or under acceleration, or at any engine speed.
>
>Suggestions, please?
>
>---
>
>Dan O'Reilly
>1966 Nightmist Blue Pony Coupe
>2002 Black Deluxe Convertible
>Colorado Springs, CO
>
>
>
>_______________________________________________
>Classic-mustangs mailing list (email redacted)
>lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs
>
>_______________________________________________
>Classic-mustangs mailing list (email redacted)
>lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO



_______________________________________________
Classic-mustangs mailing list (email redacted)
lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

This read-only message was archived from a public mail list.
Mail From: dano (Dan O'Reilly)

An update: I spent a couple hours on the phone with Pony Carburetors, and
their net result is "there's something wrong with this carb, send it back
and we'll fix it". Duh...but the positive thing is, I was able to prove
to them, using their tests, that something's out of whack. I would have
preferred not having problems, but at least they're making good on their
promise of customer service.

Stay tuned (no pun intended)...should have the carb back early next week...

At 10:19 PM 6/23/2005, Steve Hawkins wrote:
>The pump on the carb may not be set right. You may not be getting
>enough gas during the transfer from the idle circuit to the main jets.
>
>Steve Hawkins
>
>
>
>-----Original Message-----
>From: (email redacted)
>[mailtoemail redacted)] On Behalf Of Dan
>O'Reilly
>Sent: Thursday, June 23, 2005 11:15 PM
>To: A list for owners of Classic Mustangs
>Cc: 'A list for owners of Classic Mustangs'
>Subject: RE: [CM] Rough Idle/Stall
>
>
>In what respect? What to look at?
>
>At 09:16 PM 6/23/2005, Steve Hawkins wrote:
> >The stalling sounds like an accelerator pump problem.
> >
> >Steve Hawkins
> >
> >
> >
> >-----Original Message-----
> >From: (email redacted)
> >[mailtoemail redacted)] On Behalf Of Dan
>
> >O'Reilly
> >Sent: Thursday, June 23, 2005 9:36 PM
> >To: (email redacted)
> >Subject: [CM] Rough Idle/Stall
> >
> >
> >I've been having ongoing battles with rough idle and stalls in my '66
> >289 2V. I have a rebuilt Pony Carburetor on it. I finally really got
> >down to brass tacks today and correlated all the info on tuning things
> >from Chilton, Hayes and the Ford shop manual. Bottom line, I had a bit
>
> >too much advance (I have high-altitude jets) and the idle mixture was
> >WAY off. So the advance is now set to about 15 degrees (the 'Stang
> >people around here say that's about right, because of the altitude) and
>
> >the mixture screws are at about 2 1/4 turns. The idle was also set
> >about 75 rpm too high. The idle is better (lots), but I can still
> >stall it when I romp on the accelerator (although not as easily or as
> >often).
> >
> >So, I guess I'm looking for more ideas. I've also, by the way,
> >re-torqued the intake manifold (it wasn't torqued properly). I've
> >checked for vacuum leaks all over (manifold/carb/carb spacer) with
> >brake cleaner and had no luck. No tell-tale hissing of vacuum, either.
>
> >But I'm about 80% sure I have a vacuum problem.
> >
> >The other thing I'm suspicious of, frankly, is the fuel pump, maybe
> >starving the carb. I've noticed recently that at idle, I'm hearing a
> >tinny rattle from the fuel pump (I put a new one on when I was fixing
> >up the engine last year). It's really making me suspicious now. I
> >have a new gas tank and fuel pickup/sending unit along with a new fuel
> >line from pump to carb (the
> >previous owner had the wrong carb on it). I did blow the existing
> >tank-to-
> >pump line out with compressed air, and I ran an auxiliary inline can
> >filter for a couple tanks of gas. I've since removed that filter.
> >
> >Could the PCV valve (also new) possibly be a problem? I've checked it,
>
> >and it seems to be OK. I also pulled the hose off the carb spacer and
> >it killed the engine dead (instantly way too lean). So, that may be
> >grasping at straws.
> >
> >I'm also going to pull the plugs and see how they look. There's no
> >miss in the idle, or under acceleration, or at any engine speed.
> >
> >Suggestions, please?

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO

This read-only message was archived from a public mail list.
Mail From: shawkins6 (Steve Hawkins)

That's great news

Steve Hawkins



-----Original Message-----
From: (email redacted)
[mailtoemail redacted)] On Behalf Of Dan
O'Reilly
Sent: Thursday, July 14, 2005 8:23 AM
To: A list for owners of Classic Mustangs
Cc: 'A list for owners of Classic Mustangs'
Subject: RE: [CM] Rough Idle/Stall


An update: I spent a couple hours on the phone with Pony Carburetors,
and their net result is "there's something wrong with this carb, send it
back and we'll fix it". Duh...but the positive thing is, I was able to
prove to them, using their tests, that something's out of whack. I
would have preferred not having problems, but at least they're making
good on their promise of customer service.

Stay tuned (no pun intended)...should have the carb back early next
week...

At 10:19 PM 6/23/2005, Steve Hawkins wrote:
>The pump on the carb may not be set right. You may not be getting
>enough gas during the transfer from the idle circuit to the main jets.
>
>Steve Hawkins
>
>
>
>-----Original Message-----
>From: (email redacted)
>[mailtoemail redacted)] On Behalf Of Dan

>O'Reilly
>Sent: Thursday, June 23, 2005 11:15 PM
>To: A list for owners of Classic Mustangs
>Cc: 'A list for owners of Classic Mustangs'
>Subject: RE: [CM] Rough Idle/Stall
>
>
>In what respect? What to look at?
>
>At 09:16 PM 6/23/2005, Steve Hawkins wrote:
> >The stalling sounds like an accelerator pump problem.
> >
> >Steve Hawkins
> >
> >
> >
> >-----Original Message-----
> >From: (email redacted)
> >[mailtoemail redacted)] On Behalf Of
> >Dan
>
> >O'Reilly
> >Sent: Thursday, June 23, 2005 9:36 PM
> >To: (email redacted)
> >Subject: [CM] Rough Idle/Stall
> >
> >
> >I've been having ongoing battles with rough idle and stalls in my '66

> >289 2V. I have a rebuilt Pony Carburetor on it. I finally really got

> >down to brass tacks today and correlated all the info on tuning
> >things from Chilton, Hayes and the Ford shop manual. Bottom line, I
> >had a bit
>
> >too much advance (I have high-altitude jets) and the idle mixture was

> >WAY off. So the advance is now set to about 15 degrees (the 'Stang
> >people around here say that's about right, because of the altitude)
> >and
>
> >the mixture screws are at about 2 1/4 turns. The idle was also set
> >about 75 rpm too high. The idle is better (lots), but I can still
> >stall it when I romp on the accelerator (although not as easily or as

> >often).
> >
> >So, I guess I'm looking for more ideas. I've also, by the way,
> >re-torqued the intake manifold (it wasn't torqued properly). I've
> >checked for vacuum leaks all over (manifold/carb/carb spacer) with
> >brake cleaner and had no luck. No tell-tale hissing of vacuum,
> >either.
>
> >But I'm about 80% sure I have a vacuum problem.
> >
> >The other thing I'm suspicious of, frankly, is the fuel pump, maybe
> >starving the carb. I've noticed recently that at idle, I'm hearing a

> >tinny rattle from the fuel pump (I put a new one on when I was fixing

> >up the engine last year). It's really making me suspicious now. I
> >have a new gas tank and fuel pickup/sending unit along with a new
> >fuel line from pump to carb (the
> >previous owner had the wrong carb on it). I did blow the existing
> >tank-to-
> >pump line out with compressed air, and I ran an auxiliary inline can
> >filter for a couple tanks of gas. I've since removed that filter.
> >
> >Could the PCV valve (also new) possibly be a problem? I've checked
> >it,
>
> >and it seems to be OK. I also pulled the hose off the carb spacer
> >and it killed the engine dead (instantly way too lean). So, that may

> >be grasping at straws.
> >
> >I'm also going to pull the plugs and see how they look. There's no
> >miss in the idle, or under acceleration, or at any engine speed.
> >
> >Suggestions, please?

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO



_______________________________________________
Classic-mustangs mailing list (email redacted)
lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

This read-only message was archived from a public mail list.
Mail From: dano (Dan O'Reilly)

Got a call back from Pony Carburetors today. They found at least 2 problems
with the carb:

- The accelerator pump was weak (Steve wins the cookie!).
- There were some "metal flakes" clogging up some of the idle ports.
- They didn't have the fast idle mechanism set properly.

I'll have the carb back later this week, I'll let you know how it comes out.

At 07:22 AM 7/14/2005, Dan O'Reilly wrote:
>An update: I spent a couple hours on the phone with Pony Carburetors, and
>their net result is "there's something wrong with this carb, send it back
>and we'll fix it". Duh...but the positive thing is, I was able to prove
>to them, using their tests, that something's out of whack. I would have
>preferred not having problems, but at least they're making good on their
>promise of customer service.
>
>Stay tuned (no pun intended)...should have the carb back early next week...
>
>At 10:19 PM 6/23/2005, Steve Hawkins wrote:
>>The pump on the carb may not be set right. You may not be getting
>>enough gas during the transfer from the idle circuit to the main jets.
>>
>>Steve Hawkins
>>
>>
>>
>>-----Original Message-----
>>From: (email redacted)
>>[mailtoemail redacted)] On Behalf Of Dan
>>O'Reilly
>>Sent: Thursday, June 23, 2005 11:15 PM
>>To: A list for owners of Classic Mustangs
>>Cc: 'A list for owners of Classic Mustangs'
>>Subject: RE: [CM] Rough Idle/Stall
>>
>>
>>In what respect? What to look at?
>>
>>At 09:16 PM 6/23/2005, Steve Hawkins wrote:
>> >The stalling sounds like an accelerator pump problem.
>> >
>> >Steve Hawkins
>> >
>> >
>> >
>> >-----Original Message-----
>> >From: (email redacted)
>> >[mailtoemail redacted)] On Behalf Of Dan
>>
>> >O'Reilly
>> >Sent: Thursday, June 23, 2005 9:36 PM
>> >To: (email redacted)
>> >Subject: [CM] Rough Idle/Stall
>> >
>> >
>> >I've been having ongoing battles with rough idle and stalls in my '66
>> >289 2V. I have a rebuilt Pony Carburetor on it. I finally really got
>> >down to brass tacks today and correlated all the info on tuning things
>> >from Chilton, Hayes and the Ford shop manual. Bottom line, I had a bit
>>
>> >too much advance (I have high-altitude jets) and the idle mixture was
>> >WAY off. So the advance is now set to about 15 degrees (the 'Stang
>> >people around here say that's about right, because of the altitude) and
>>
>> >the mixture screws are at about 2 1/4 turns. The idle was also set
>> >about 75 rpm too high. The idle is better (lots), but I can still
>> >stall it when I romp on the accelerator (although not as easily or as
>> >often).
>> >
>> >So, I guess I'm looking for more ideas. I've also, by the way,
>> >re-torqued the intake manifold (it wasn't torqued properly). I've
>> >checked for vacuum leaks all over (manifold/carb/carb spacer) with
>> >brake cleaner and had no luck. No tell-tale hissing of vacuum, either.
>>
>> >But I'm about 80% sure I have a vacuum problem.
>> >
>> >The other thing I'm suspicious of, frankly, is the fuel pump, maybe
>> >starving the carb. I've noticed recently that at idle, I'm hearing a
>> >tinny rattle from the fuel pump (I put a new one on when I was fixing
>> >up the engine last year). It's really making me suspicious now. I
>> >have a new gas tank and fuel pickup/sending unit along with a new fuel
>> >line from pump to carb (the
>> >previous owner had the wrong carb on it). I did blow the existing
>> >tank-to-
>> >pump line out with compressed air, and I ran an auxiliary inline can
>> >filter for a couple tanks of gas. I've since removed that filter.
>> >
>> >Could the PCV valve (also new) possibly be a problem? I've checked it,
>>
>> >and it seems to be OK. I also pulled the hose off the carb spacer and
>> >it killed the engine dead (instantly way too lean). So, that may be
>> >grasping at straws.
>> >
>> >I'm also going to pull the plugs and see how they look. There's no
>> >miss in the idle, or under acceleration, or at any engine speed.
>> >
>> >Suggestions, please?
>
>---
>
>Dan O'Reilly
>1966 Nightmist Blue Pony Coupe
>2002 Black Deluxe Convertible
>Colorado Springs, CO
>
>
>
>_______________________________________________
>Classic-mustangs mailing list
>(email redacted)
>lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO

This read-only message was archived from a public mail list.
Mail From: shawkins6 (Steve Hawkins)

I hope this gets you back on the road

Steve Hawkins



-----Original Message-----
From: (email redacted)
[mailtoemail redacted)] On Behalf Of Dan
O'Reilly
Sent: Monday, July 18, 2005 2:44 PM
To: A list for owners of Classic Mustangs
Subject: RE: [CM] Rough Idle/Stall


Got a call back from Pony Carburetors today. They found at least 2
problems with the carb:

- The accelerator pump was weak (Steve wins the cookie!).
- There were some "metal flakes" clogging up some of the idle ports.
- They didn't have the fast idle mechanism set properly.

I'll have the carb back later this week, I'll let you know how it comes
out.

At 07:22 AM 7/14/2005, Dan O'Reilly wrote:
>An update: I spent a couple hours on the phone with Pony Carburetors,
>and their net result is "there's something wrong with this carb, send
>it back and we'll fix it". Duh...but the positive thing is, I was able

>to prove to them, using their tests, that something's out of whack. I
>would have preferred not having problems, but at least they're making
>good on their promise of customer service.
>
>Stay tuned (no pun intended)...should have the carb back early next
>week...
>
>At 10:19 PM 6/23/2005, Steve Hawkins wrote:
>>The pump on the carb may not be set right. You may not be getting
>>enough gas during the transfer from the idle circuit to the main jets.
>>
>>Steve Hawkins
>>
>>
>>
>>-----Original Message-----
>>From: (email redacted)
>>[mailtoemail redacted)] On Behalf Of
>>Dan O'Reilly
>>Sent: Thursday, June 23, 2005 11:15 PM
>>To: A list for owners of Classic Mustangs
>>Cc: 'A list for owners of Classic Mustangs'
>>Subject: RE: [CM] Rough Idle/Stall
>>
>>
>>In what respect? What to look at?
>>
>>At 09:16 PM 6/23/2005, Steve Hawkins wrote:
>> >The stalling sounds like an accelerator pump problem.
>> >
>> >Steve Hawkins
>> >
>> >
>> >
>> >-----Original Message-----
>> >From: (email redacted)
>> >[mailtoemail redacted)] On Behalf Of
>> >Dan
>>
>> >O'Reilly
>> >Sent: Thursday, June 23, 2005 9:36 PM
>> >To: (email redacted)
>> >Subject: [CM] Rough Idle/Stall
>> >
>> >
>> >I've been having ongoing battles with rough idle and stalls in my
>> >'66 289 2V. I have a rebuilt Pony Carburetor on it. I finally
>> >really got down to brass tacks today and correlated all the info on
>> >tuning things from Chilton, Hayes and the Ford shop manual. Bottom
>> >line, I had a bit
>>
>> >too much advance (I have high-altitude jets) and the idle mixture
>> >was WAY off. So the advance is now set to about 15 degrees (the
>> >'Stang people around here say that's about right, because of the
>> >altitude) and
>>
>> >the mixture screws are at about 2 1/4 turns. The idle was also set
>> >about 75 rpm too high. The idle is better (lots), but I can still
>> >stall it when I romp on the accelerator (although not as easily or
>> >as often).
>> >
>> >So, I guess I'm looking for more ideas. I've also, by the way,
>> >re-torqued the intake manifold (it wasn't torqued properly). I've
>> >checked for vacuum leaks all over (manifold/carb/carb spacer) with
>> >brake cleaner and had no luck. No tell-tale hissing of vacuum,
>> >either.
>>
>> >But I'm about 80% sure I have a vacuum problem.
>> >
>> >The other thing I'm suspicious of, frankly, is the fuel pump, maybe
>> >starving the carb. I've noticed recently that at idle, I'm hearing
>> >a tinny rattle from the fuel pump (I put a new one on when I was
>> >fixing up the engine last year). It's really making me suspicious
>> >now. I have a new gas tank and fuel pickup/sending unit along with
>> >a new fuel line from pump to carb (the
>> >previous owner had the wrong carb on it). I did blow the existing
>> >tank-to-
>> >pump line out with compressed air, and I ran an auxiliary inline can

>> >filter for a couple tanks of gas. I've since removed that filter.
>> >
>> >Could the PCV valve (also new) possibly be a problem? I've checked
>> >it,
>>
>> >and it seems to be OK. I also pulled the hose off the carb spacer
>> >and it killed the engine dead (instantly way too lean). So, that
>> >may be grasping at straws.
>> >
>> >I'm also going to pull the plugs and see how they look. There's no
>> >miss in the idle, or under acceleration, or at any engine speed.
>> >
>> >Suggestions, please?
>
>---
>
>Dan O'Reilly
>1966 Nightmist Blue Pony Coupe
>2002 Black Deluxe Convertible
>Colorado Springs, CO
>
>
>
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>lists.twistedpair.ca/mailman/listinfo.cgi/classic-mustangs

---

Dan O'Reilly
1966 Nightmist Blue Pony Coupe
2002 Black Deluxe Convertible
Colorado Springs, CO



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