Go Back   MustangForums.com > Ford Mustang Tech > Classic Mustangs (Tech)
Sign in using an external account
Register Forgot Password?
Search


Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Carb Tuning/Hesitation problem, autolite 1100

Reply
 
 
 
 
Thread Tools Search this Thread
Old 06-25-2007, 03:40 PM   #1
Pmac1234
 
Join Date: Sep 2006
Posts: 7
Default Carb Tuning/Hesitation problem, autolite 1100

I have a 66 mustang coupe, 200 6 Cyl with what looks like an autolite 1100 carburetor from the pics I have seen. The car idles great in park and in gear, but when revving it up it wants to cut out completely. I have tried to adjust the carburetor but nothing seems to work. A couple weeks ago for a little while it was running beautifully. I just replaced the fuel filter and even tuned the carb again with a vacuum gauge. I have a peak solid steady 20 on the gauge, but still when you rev the engine there is a hesitation where it wants to die. I really don’t want to replace or rebuild the carb if I don’t have to. Anyone have any suggestions? Is this a carb issue, a fuel supply issue, maybe even a spark plug issue? Suggestions on tuning the carb if that is what the problem is. Thanks for the help
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
Pmac1234 is offline   Reply With Quote
Old 06-25-2007, 05:19 PM   #2
66GTKFB
5th Gear Member
 
Join Date: Mar 2007
Location:
Posts: 2,623
Default RE: Carb Tuning/Hesitation problem, autolite 1100

How is the regular driving, say at 40 and 65?
Jim
66GTKFB is offline   Reply With Quote
Old 06-25-2007, 05:42 PM   #3
Pmac1234
 
Join Date: Sep 2006
Posts: 7
Default RE: Carb Tuning/Hesitation problem, autolite 1100

It's hard to tell, I can't really drive it the way it is. The hesitation I'm getting causes the car to jerk/cut out. The problem has been intermitent in the past, I thought I had the carb adjusted great and then all of a sudden it started to cut out again. Now it seems like I can't do anything to get it to go smoothly. When I do get brave enough to take it on the road, sometimes once I get past the cutting out part it seems to run ok at higher speeds most of the time right now it putts though. Getting it up to any speed is a problem, if you floor the gas it will die, if you go smoothly it will putt putt it's way up to speed. I've been trying to adjust the carb and then run it up and down the driveway to test it out, but I can't really open it up like this.
Pmac1234 is offline   Reply With Quote
Old 06-25-2007, 06:41 PM   #4
crunchyskippy
3rd Gear Member
 
crunchyskippy's Avatar
 
Join Date: Jun 2006
Vehicle: 1967 Ford Mustang Coupe
Location: Northern Virginia
Posts: 528
Default RE: Carb Tuning/Hesitation problem, autolite 1100

Is your accelerator pump working (for instance, can you see it squirint in the venturi's when you push it by hand)? What about checking your float level (sounds like it could be REALLY low).

My last thought is this: Any chance your vacuum advance is out of whack and is advancing too far under acceleration? I suppose you could check this by unhooking the vacuum to the distributor and capping it off while you test for acceleration. (Don't expect it to run too smoothly like this, but it may indicate your problem.)

Can you get the engine to revup if you increase the speed slowly (as opposed to a quick acceleration)? I'm assuming all of this is occurs when the engine is warm.

Let us know.
__________________
.
___ ___ ___ ___ ___
.
__________________

1967 Mustang Coupe with C-4 Automatic
crunchyskippy is offline   Reply With Quote
Old 06-25-2007, 07:32 PM   #5
Pmac1234
 
Join Date: Sep 2006
Posts: 7
Default RE: Carb Tuning/Hesitation problem, autolite 1100

Thanks, I'm going to try all of this tonight. The one thing I don't knowis how to check the float level in the carb. Do you know where the float is on this carb? How would I go about checking it. I'm a rookie when it comes to working on the carb. Thanks for the help
Pmac1234 is offline   Reply With Quote
Old 06-25-2007, 07:33 PM   #6
restomod87
2nd Gear Member
 
Join Date: May 2007
Location:
Posts: 159
Default RE: Carb Tuning/Hesitation problem, autolite 1100

What condition are your spark plugs and cables in? Problems like these, look at the basics...Air, fuel, and a spark...inspect those and let us know what you find...I had a similar problem and went ahead and replaced my carb with a holley 570 street avenger carb, and it screams good luck
__________________
restomod87 is offline   Reply With Quote
Old 07-03-2007, 11:10 PM   #7
Pmac1234
 
Join Date: Sep 2006
Posts: 7
Default RE: Carb Tuning/Hesitation problem, autolite 1100

Sorry it's taken so long to get back to this. It looks like I have an issue with the accelerator pump. The diaphragm in there is pretty hard. I don't see any gas squirting in when I push it by hand. Anyone know where you can get a rebuild kit for this carb. I believe it's an autolite 1100, if it's not it's extremely similiar. Also, on the one suggestion about the holley 570. Is this an easy swap? Is the 570 a single barrel carb? I have a V6 200 engine with a autolite 1100 carb. Any Suggestions on a new carb that would fit right out of the box? Thanks for the help

[IMG]local://upfiles/49972/1F9AD81BF3E047BAA21190EE9C575507.jpg[/IMG]
Pmac1234 is offline   Reply With Quote
Old 07-04-2007, 12:48 AM   #8
Soaring
I ♥ Acer
 
Join Date: Oct 2004
Location:
Posts: 17,565
Default RE: Carb Tuning/Hesitation problem, autolite 1100

If you go to the http://www.Ponycarbs.com site you will see that they have to do some special things to get those crappy 1100 carbs to behave. Consider getting one from them after they have worked it over.
Soaring is offline   Reply With Quote
Old 07-05-2007, 10:05 AM   #9
Psiclone
 
Join Date: Jul 2006
Location:
Posts: 20
Default RE: Carb Tuning/Hesitation problem, autolite 1100

As for a rebuild kit, I know you can get one for the 1100 at Autozone for about $15. It includes all the gaskets, bb's,pump diaphragms and a needle/seat. If you happen to have something other than the 1100, say a Carter, they should have the kits for those, too. Just make sure you identify what carb you have because Ford used different ones throughout the production of the I6. There's also a difference betweenthe carbs for an automatic versus a manual tranny.
Psiclone is offline   Reply With Quote
Old 07-05-2007, 10:52 AM   #10
67 evil eleanor
5th Gear Member
 
Join Date: Nov 2006
Location:
Posts: 2,106
Default RE: Carb Tuning/Hesitation problem, autolite 1100

There is acommon flat spot on these carbs. However itshould not die. Try to retune it without the vacuum gauge as this carb is far from new.And ifit don't improve.And like Soaring said, you may want to try "Pony Carbs".
__________________
[IMG][/IMG] Eat Rice and be Healthy!!!
67 evil eleanor is offline   Reply With Quote
Old 07-05-2007, 01:41 PM   #11
1967inline6MUSTANG
1st Gear Member
 
Join Date: Dec 2006
Location: Round Rock Tx
Posts: 95
Default RE: Carb Tuning/Hesitation problem, autolite 1100

if only i knew of a place you could ask a 6 cylinder specific question...where would that be......?
__________________
x
http://s163.photobucket.com/albums/t306/inline6mustang/
http://members.cardomain.com/teslafan
http://www.classicinlines.com
1967inline6MUSTANG is offline   Reply With Quote
Old 07-05-2007, 02:03 PM   #12
66GTKFB
5th Gear Member
 
Join Date: Mar 2007
Location:
Posts: 2,623
Default RE: Carb Tuning/Hesitation problem, autolite 1100

F A Q

66GTKFB is offline   Reply With Quote
Old 07-05-2007, 07:28 PM   #13
Cogtx
3rd Gear Member
 
Cogtx's Avatar
 
Join Date: Jul 2005
Vehicle: 1967
Location: Sugar Land, Texas
Posts: 565
Default RE: Carb Tuning/Hesitation problem, autolite 1100

This place is always a great starting spot for any classic stang questions. However, you might check out http://fordsix.com/forum/as well...
__________________
Father and Son '67 Stang Project ongoin'
200ci I6 1v 3 spd
Cogtx is offline   Reply With Quote
Old 07-06-2007, 06:30 PM   #14
gpfont
 
Join Date: Jul 2007
Posts: 1
Default RE: Carb Tuning/Hesitation problem, autolite 1100

I just rebuilt an autolite 1100on my 65 mustang 6 cyl. (200 cid ,automatic). I would suggest you at least try this first. I had the same problem.I hit thegas and thecar would hesitate and stall out. Now it's running without hesitation and a great deal better. It's not that bad, this is what I did:
[ol][*]I bought the carb rebuilt kit at Napa. Kit # 2-5579.. around $22[*]Boughta carb cleaner bucket for about $17 at discount auto, Napa wanted $50.This bucket (paint can) is for letting thecarb/parts soak. Some people clean the carb with a $3 carb cleaner spray.[*]The carb kit should have instructions, if not see: http://www.tocmp.com/manuals/Carbs/F...00/indexf1.htm[*]Make sure to remember where the 3 little ***** and the weight are placed. The carb kit will give you the 3 little *****, but not the weight.[*]Adjusting the float and accel pump level is important, along w/ the choke.[*]I let the parts soak about 30-45 minutes.[/ol]It isn't that bad, but if you haven't done it before it could be a challenge. If you're not up to it you can send the carb to a reputable rebuilder like www.ponycarburetors.com
(I don't work for them). They will rebuilt it for you for around $219.

Let me know if you have any questions.

Good Luck!

Gary
gpfont is offline   Reply With Quote
Old 08-26-2007, 11:01 PM   #15
jdanbarnes
 
Join Date: Aug 2007
Location: Casa Grande AZ
Posts: 17
Default RE: Carb Tuning/Hesitation problem, autolite 1100

The Autolite 1100 gets hot is one of the main problems. I am having the same issue. I am going to try a carb spacer to keep it cool. I will let you know if I have any luck.
__________________
Stanger's Paradise

jdanbarnes is offline   Reply With Quote
Old 08-27-2007, 05:21 AM   #16
MustangPammie
3rd Gear Member
 
Join Date: Apr 2006
Location: Near Cape Cod, Mass.
Posts: 615
Default RE: Carb Tuning/Hesitation problem, autolite 1100

I had a similar issue but mine was also stalling going up/down inclines. Long story but a new carb from Pony Carbs solved the issue. No hesitation, no stalling, smooth riding and the float is no stuck.

When I had the bad hesitation last year, they rejetted the carb and that worked for a while.

BTW, "I have a V6 200 engine with a autolite 1100 carb"

V6, huh? Unique car


__________________



MustangPammie is offline   Reply With Quote
Old 08-28-2007, 01:00 AM   #17
az1966
2nd Gear Member
 
Join Date: Dec 2006
Location:
Posts: 432
Default RE: Carb Tuning/Hesitation problem, autolite 1100

What gpfont said ,, did the same thing and it worked,,,also as was said above.... pony carbs for hard to find parts,,,,rebuild is a little pricey but they fix alot of manufacturing/performance issues
__________________
66 stang
az1966 is offline   Reply With Quote
Old 10-10-2012, 10:05 PM   #18
studeman
 
Join Date: Oct 2012
Vehicle: '53 Studebaker Champ
Location: Minnesota
Posts: 1
Default Studeman

I bought two Falcons new, '62 and '63 and both ran perfect and no carb' trouble in 160k miles on the '63. So... when the Carter on my Stude' Champ gave troubles I looked for and found an 1100 carb' from a '65 Comet. Cleaned it in every possible way. Soaked it in HEET for a week. Found a correct accelerator pump diaphragm on eBay and put it in. Set the float level to 11/32", from the lower edge of the casting to the top of the float, and about level in looks. I then made an adapter/riser, with matching flanges to the 1100 and the manifold. This raised the carb to the height of the old carb', allowing the original air cleaner setup to fit as it was before. I also welded fittings to the old auto-choke lever, with an arm to hold a HAND CHOKE cable, to the dash. I hate these old auto-chokes. Anyway guys, my little 170 Stude' Champ has never run so well or so smooth. Ford parts are hard to beat and don't be fooled... the 1100 Autolite carb' will work fine IF you CLEAN everything... run guitar string wire thru' all holes and passages. Soak in carb' cleaner or HEET. Buy or make a new gasket.
I make my own with a full set of small punches but a correct carb' kit will give you the gasket and other parts, like the needle & seat. I just used odd parts I have on hand that fit.
Note: Be sure that the little ball bearings are in the correct holes, with the small aluminum stud on top of the outlet ball. These ***** are the valves that make the accelerator pump work. Make a diagram of where these parts are when you take it apart. The ***** will fall out on the floor if you're not careful. Work on a cloth, on your bench or table. Make sure your float is good, as others have stated in these forums. Also, your float should only have a half inch of travel at the far end. Adjust the other prongs so that this travel up and down is attained. Too much float travel and it can jam the needle and not seat it.
Good luck guys ..........
Studeman
studeman is offline   Reply With Quote
Old 10-10-2012, 10:05 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Tags
1100, 1967, 200, adjusting, autolite, carb, carburetor, float, hesitation, identify, kit, mustang, rebuild, spacer, tune

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 09:41 AM.

Internet Brands, Inc.


This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford is a registered trademark of the Ford Motor Company
Emails Backup