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#1 |
'Burban Legend
![]() Join Date: Apr 2005
Location: Mingo Junction OH
Posts: 918
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What is Weakest Link on Edelbrock Carbs?
I have been buying these Edelbrock carbs for years with great success, but I finally had one give me all kinds of fits. I even took it apart and put the 4x4 needle and seat in it and reset the floats but it didnt help. This one would only run at WOT and would stall like somebody flipped a switch instead of sputtering out. I replaced it with the one on my Blazer, and it ran like a charm. It ran great forever, but I let it sit for a few months, and thats when it started acting up. Is this something I can fix with some Sea Foam, or do I need to replace a certain part. I hate to spend another $300 if I can fix this one. Let me know what you think. Thanks, Mike
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'67 Chevy Iron City Beer Truck (9ft step) '67 Chevy Panel Truck 467 '68 Short Fleet 305v6 '68 McLaren Ramp Truck '68/'68/'70/'71 Burbs 292/366/402/454 '69 C-30 dump '71 C-50 dump and church bus '71 4x4 454 '72 Blazer (w/pop-up camper) $15 x-hooks '66 Chevy II 194/Weber '68 El Camino" 305v6 '69 Skylark 455 Buick '70 Chevelle 427 '71 Cutlass W-31 '71 GTO 400 2x2 "The 51" Chopped '51 Chevy (409) my first car OK Toad, we'll take 'em all... John Milner |
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#2 |
Senior Member
Join Date: Jul 2010
Location: South Dakota
Posts: 4,093
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Re: What is Weakest Link on Edelbrock Carbs?
You could try running powerfoam from ams oil into the carb, it cleaned out my intake on my car and made it run better, and weve aslo put it in a 04 gmc truck to clean out the engine. The link below tells you about it.
http://www.amsoil.com/storefront/apf.aspx |
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#3 |
Registered User
Join Date: Feb 2006
Location: Smyrna, Ga
Posts: 1,647
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Re: What is Weakest Link on Edelbrock Carbs?
if you let it sit for a few months and now its started acting up, you got a passage or air bleed trashed or gunked up.
I would use some pin drills or some wire to make sure all passages and bleeds are clear. |
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#4 |
'Burban Legend
![]() Join Date: Apr 2005
Location: Mingo Junction OH
Posts: 918
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Re: What is Weakest Link on Edelbrock Carbs?
Well, I am not sure what those are, but they sound like they are inside the carb. I would be happy to do that if someone can pinpoint their location.
__________________
'67 Chevy Iron City Beer Truck (9ft step) '67 Chevy Panel Truck 467 '68 Short Fleet 305v6 '68 McLaren Ramp Truck '68/'68/'70/'71 Burbs 292/366/402/454 '69 C-30 dump '71 C-50 dump and church bus '71 4x4 454 '72 Blazer (w/pop-up camper) $15 x-hooks '66 Chevy II 194/Weber '68 El Camino" 305v6 '69 Skylark 455 Buick '70 Chevelle 427 '71 Cutlass W-31 '71 GTO 400 2x2 "The 51" Chopped '51 Chevy (409) my first car OK Toad, we'll take 'em all... John Milner |
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#5 |
Cops, ha, catch me if you can!
Join Date: Jun 2009
Location: Santa Barbara, CA.
Posts: 271
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Re: What is Weakest Link on Edelbrock Carbs?
I had a similar problem with one of my new Edelbrocks, after taking the top of and cleaning it out I still had the same problem. I finally ended up taking the whole thing apart and found that one of the small gaskets inside had a hole in it, a defect from factory (the gasket was not lined up properly and a screw cut through the gasket). After replacing all the gaskets reinstalled and it’s running great for now. "These" carbs are very easy to take apart and reassemble.
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72 C-10 Stepper 350/TH350 3.73 in the back Edelbrock intake and Carb Hooker Comp Headers 275/60R15 on Rallies ![]() ![]() |
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#6 |
Registered Cruiser
Join Date: May 2002
Location: Las Vegas NV
Posts: 2,230
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Re: What is Weakest Link on Edelbrock Carbs?
Get a rebuild kit, and some carb cleaner. It's a lot easier than you think. DIY!
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I intend to live forever. So far, so good. |
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#7 |
'Burban Legend
![]() Join Date: Apr 2005
Location: Mingo Junction OH
Posts: 918
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Re: What is Weakest Link on Edelbrock Carbs?
Yes, I was surprised at how simple they look inside compared to a Q-jet or Holley. Being that I a run a parts store, getting a kit will be no sweat, as long as it comes with instructions. Or do I need to find a Carter/Edelbrock book? I got over my fear of distributors last year, I guess this year is carbophobia time. Cripe, by next year I will be tearing down a few of my Muncies and T-10s I will be so brave. Somebody please stop me before I start ripping into TH-400s and 700R4s...........hehe. Thanks guys.
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'67 Chevy Iron City Beer Truck (9ft step) '67 Chevy Panel Truck 467 '68 Short Fleet 305v6 '68 McLaren Ramp Truck '68/'68/'70/'71 Burbs 292/366/402/454 '69 C-30 dump '71 C-50 dump and church bus '71 4x4 454 '72 Blazer (w/pop-up camper) $15 x-hooks '66 Chevy II 194/Weber '68 El Camino" 305v6 '69 Skylark 455 Buick '70 Chevelle 427 '71 Cutlass W-31 '71 GTO 400 2x2 "The 51" Chopped '51 Chevy (409) my first car OK Toad, we'll take 'em all... John Milner |
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#8 |
Registered User
Join Date: Dec 2009
Location: DFW, TX
Posts: 764
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Re: What is Weakest Link on Edelbrock Carbs?
Those carbs are well documented on Edelbrock's site. You should have no problem rebuilding it with the kit's exploded view and the documentation on their site.
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#9 |
Registered Cruiser
Join Date: May 2002
Location: Las Vegas NV
Posts: 2,230
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Re: What is Weakest Link on Edelbrock Carbs?
good info here
These are easy to rebuild, and tune. The biggest setback is that they are notoriously rich at idle which can make them hard to pass a smog check. Carter makes a good performance/strip kit for them.
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I intend to live forever. So far, so good. |
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#10 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: What is Weakest Link on Edelbrock Carbs?
The Carter and the Edelbrock AFB design carbs are the EXACT same carbs. They are made by a company called Magnetti-Marelli and sold to the different outlets to market under their names. The parts from a Carter will bolt into an Edelbrock and vice-versa. I found the parts for an Edelbrock was slightly cheaper and with that in mind I purchased a complete rebuild set and also a lot of needles and jets for my carbs. I keep a plastic file box with all of those in them on hand, just so I can do a rebuild, if needed.
I have found that the air bleed ports in the primaries do tend to plug if the carb sets for awhile and also the needles will stick shut if you end up with a fuel mix of too much alcohol. Taking apart an Edelbrock is easy, I use a magnetic parts tray and lay the parts in the order that I took them off of the carb, so that I do not loose them. The hardest thing to deal with will be the little clips on the rods. I finally purchased a tool from snap-on to handle those clips, so that I did not send one sailing off into infinity and beyond. Did that and grumbled for an hour till I went and dug up an old carb for the replacement clip. Be sure to take everything out, os that you can flush and clean the entire body and orifices. If you have a good camera, take pics at different stages, so that you can make your own assembly book.
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Frank |
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#11 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: What is Weakest Link on Edelbrock Carbs?
1400-series carbs are the subject. I had one on my '69 and replaced it with an Edelbrock 1901 (Q-Jet). I don't regret it, although Edelbrock no longer markets them. My problem with the 1405, was that it ran so rich (.100 main jets) that it gas-fouled plugs and the oil was diluted by the excess gas getting into the cylinders and washing past the rings. The exhaust gas odor would bring tears to your eyes, too. None of this has occured with the Q-Jet version.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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#12 |
Registered User
Join Date: Feb 2006
Location: Smyrna, Ga
Posts: 1,647
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Re: What is Weakest Link on Edelbrock Carbs?
first you will have to remove the upper plate from the carb by removing the 8 torx screws and by removing the clips from the linkages. While you have the top off the carb you may want to check the float rise and drop, per the instructions edelbrock provides in the owners manual.
once the top is off you will notice the boosters that dump the fuel into each barrell. The air bleeds will be the copper/brass tubes that are sticking out from behind the boosters. you can remove each of these bosters and blow/clear them out. while you have the carb apart you may want to remove the jets and blow all the passages out thoroughly. you can also remove the accel pump squirters and blow that out too. iff you do be careful of the little bearing ant weight that are in there. |
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#13 |
Registered User
Join Date: Feb 2010
Location: Manteca, Ca
Posts: 13
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Re: What is Weakest Link on Edelbrock Carbs?
i had this same problem my air bleeds or some passageway was blocked cleaned it out with some small wire and it's great now
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#14 |
Registered User
Join Date: Jan 2010
Location: GREENEVILLE TENNESSEE
Posts: 1,310
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Re: What is Weakest Link on Edelbrock Carbs?
you can order a carb kit for a 1969 NEW YORKER 440 ..same carb ,carter afb..and the kit is alot cheaper..I have done a few rebuilds with those kits..around $20 instead of $45 that edelbrock wants..
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#15 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: What is Weakest Link on Edelbrock Carbs?
Or....order a kit for a '67 Buick Skylark, 340. That's what mine had....an AFB. So did my '64 Pontiac Bonneville 389, 303-horse engine.
Lots and lots of GM vehicles had AFB's. Carter ThermoQuad was on a lot of Chryslers. Similar to an AFB....but different.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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#16 |
'Burban Legend
![]() Join Date: Apr 2005
Location: Mingo Junction OH
Posts: 918
|
Re: What is Weakest Link on Edelbrock Carbs?
Wow, thanks guys. This might be a good time to say "virtual plethera" hehe. No that you mention it, I just realized that this is the carb I had on my Blazer originally, and it drained a whole tank full of gas into my oil while I had it sitting downhill. Totally forgot about it until now. I wandered why gas was coming out the hole in the block in front of the fuel pump (not supposed to come out there.) Didnt realize the crankcase was full of gas until it was too late. Was driving and started losing oil pressure in the brand new 400 small block. Found I was 3 qts low and only had one. Not sure if I should rebuild this carb, or BURN IT. Thanks again guys, will put this info to good use.
__________________
'67 Chevy Iron City Beer Truck (9ft step) '67 Chevy Panel Truck 467 '68 Short Fleet 305v6 '68 McLaren Ramp Truck '68/'68/'70/'71 Burbs 292/366/402/454 '69 C-30 dump '71 C-50 dump and church bus '71 4x4 454 '72 Blazer (w/pop-up camper) $15 x-hooks '66 Chevy II 194/Weber '68 El Camino" 305v6 '69 Skylark 455 Buick '70 Chevelle 427 '71 Cutlass W-31 '71 GTO 400 2x2 "The 51" Chopped '51 Chevy (409) my first car OK Toad, we'll take 'em all... John Milner |
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#17 |
Old Skool Club
![]() Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
|
Re: What is Weakest Link on Edelbrock Carbs?
I mentioned the Carter ThermoQuad in an earlier post, but I believe I should have said Carter AVS. There are differences, fo sho.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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#18 |
Registered User
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,217
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Re: What is Weakest Link on Edelbrock Carbs?
The only complaint I have had with the AFB style carbs is hard to start after setting awhile. I put an electric fuel pump with a spring loaded switch on one of my freinds Buick. I would pull the metering rod's out before removeing the top.
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