 Weber idf 44 leak!, Help! |
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| Milkman7286 |
 Jul 1 2014, 07:37 AM
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#1
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Newbie  Group: Members Posts: 30 Joined: 1-July 14 From: Missoula, MT Member No.: 17,571 Region Association: None  |
Hello all,
I've got a 71 4 banger with dual weber idf 44's on it and the driver's side front barrel has sprung a leak. Here is a little detail before I go further into the leak: The webers are about 6 years old and have about 7,000 miles on them. The car sat in storage for about 3 years but was started and driven every 6 months or so. For all I know this leak has been there all along and I never noticed, but I don't think that is the case. The leak: The carb is leaking gas down the front barrel on the drivers side. It appears to be coming from the progression / transition holes but it is hard to tell. The other thing I noticed is that the gasket just above the float bowl is very wet and the gasket between the carb/manifold is also a little wet. I have been dealing with this for about 2 weeks now and have read every possible thing I can find and none have solved this. Here is what I have done so far: -Float set at 10.5mm measuring with the gasket in place. -Butterfly was loosened and repositioned in the bore. -Needle and seat have been tested both with fuel and air and are good -float is free in movement and does not hang up in the bowl -float is still a float and does not sink -idle circuit is free flowing and not clogged -fuel pressure is 2.5 -float bowl gasket does not accidentally cover any holes or vents Any ideas on this one? I feel like I have tried everything and for the life of me I can't figure it out. Last night I was watching the fuel puddle on top of the butterfly and it seemed like maybe it was coming from the seam at the float bowl gasket. Any reason why fuel would be coming from there? As FYI: This happens when the car is hot or cold, doesn't matter. |
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| 72hardtop |
Jul 15 2014, 06:15 PM
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#2
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Member Group: Members Posts: 120 Joined: 11-September 13 From: Seattle/HB Ca./Fujieda-Japan Member No.: 16,378 Region Association: Pacific Northwest |
What type if any fuel pressure regulator are you using. Pressure is paramount no more than 3.5lbs. Also very carefully check the carb top gasket and make sure none of the ports are blocked or partially blocked.
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| Milkman7286 |
Jul 15 2014, 08:01 PM
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#3
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Newbie Group: Members Posts: 30 Joined: 1-July 14 From: Missoula, MT Member No.: 17,571 Region Association: None |
QUOTE(72hardtop @ Jul 15 2014, 06:15 PM)  What type if any fuel pressure regulator are you using. Pressure is paramount no more than 3.5lbs. Also very carefully check the carb top gasket and make sure none of the ports are blocked or partially blocked. I'm using a Holley regulator with a seperate gauge. I have it set at 2.5 now confirmed by the gauge. I just put new gaskets on and it still does it. I have checked that the ports are not blocked. It did it with the old gasket and with the new |
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Posts in this topic
Milkman7286 Weber idf 44 leak! Jul 1 2014, 07:37 AM
rhodyguy can you see a dribble when the fuel pump is energi... Jul 1 2014, 08:02 AM
Milkman7286
can you see a dribble when the fuel pump is energ... Jul 1 2014, 08:51 AM Mark Henry If it's leaking from a press in plug in the bo... Jul 1 2014, 09:16 AM Milkman7286
If it's leaking from a press in plug in the b... Jul 1 2014, 10:03 AM Mark Henry Leaking inside the carb is you have a fuel enrichm... Jul 1 2014, 10:58 AM Milkman7286
Leaking inside the carb is you have a fuel enrich... Jul 1 2014, 11:12 AM ThePaintedMan :agree: With Mark.
If one of the circuits is stuc... Jul 1 2014, 11:39 AM Milkman7286
:agree: With Mark.
If one of the circuits is stu... Jul 1 2014, 11:52 AM ThePaintedMan
Mine does not have a lever, just a little block o... Jul 1 2014, 12:27 PM Racer Chris Even without the entire enrichment assembly there ... Jul 1 2014, 12:50 PM Milkman7286
Even without the entire enrichment assembly there... Jul 1 2014, 01:43 PM Elliot Cannon I have had 44idf's on my car for 10 years and ... Jul 1 2014, 01:27 PM Milkman7286 Barrel*....damn autocorrect Jul 1 2014, 01:46 PM ThePaintedMan Sorry, I should have been more specific. The valve... Jul 1 2014, 02:47 PM Mark Henry If leaking/spilling over the float bowl you more l... Jul 1 2014, 03:22 PM Milkman7286 Well,
It wasn't the choke pieces, the plungers... Jul 2 2014, 06:55 AM 72hardtop
Well,
It wasn't the choke pieces, the plunger... Jul 13 2014, 02:41 PM Jake Raby How new are these carbs? Do you have a pic of one ... Jul 2 2014, 08:00 AM Milkman7286
How new are these carbs? Do you have a pic of one... Jul 2 2014, 09:07 AM jmill
Would bad gaskets cause something like this?
Ga... Jul 2 2014, 10:24 AM Milkman7286
Would bad gaskets cause something like this?
G... Jul 2 2014, 12:08 PM Milkman7286
Would bad gaskets cause something like this?
G... Jul 2 2014, 12:08 PM ThePaintedMan There are a lot of variables, not to mention good ... Jul 2 2014, 10:55 AM jmill Do you have thick manifold to head spacers?
Sound... Jul 2 2014, 10:20 PM Milkman7286
Do you have thick manifold to head spacers?
Soun... Jul 3 2014, 07:31 AM jmill The carb bubbling and gurgling after running sound... Jul 3 2014, 10:36 AM ThePaintedMan
The carb bubbling and gurgling after running soun... Jul 3 2014, 12:14 PM brant did you test the floats in a cup of water when you... Jul 3 2014, 12:13 PM jmill
Ding, ding, ding. The plungers need to be in plac... Jul 13 2014, 05:05 PM Al Meredith Are you sure they are Webers? About 6 years ago ... Jul 14 2014, 01:35 PM stugray This might be a long shot, but dont carbs need a v... Jul 14 2014, 06:01 PM Milkman7286 Ok guys I finally got around to the carbs again an... Jul 15 2014, 11:19 AM jmill Clean up around the O ring seat and possibly get s... Jul 15 2014, 11:33 AM Milkman7286
Clean up around the O ring seat and possibly get ... Jul 15 2014, 11:38 AM rhodyguy the screws you're talking about, idle air mixt... Jul 15 2014, 12:03 PM Milkman7286
the screws you're talking about, idle air mix... Jul 15 2014, 12:09 PM rhodyguy correct. one less thing to worry about. Jul 15 2014, 03:56 PM Milkman7286 All:
Just fired the old girl up with everything m... Jul 15 2014, 04:50 PM jmill You installed the spacers too?
This fuel you see ... Jul 15 2014, 05:39 PM Milkman7286
You installed the spacers too?
This fuel you see... Jul 15 2014, 07:54 PM jmill Theres only a couple of reasons to have fuel leaki... Jul 15 2014, 08:28 PM Milkman7286
Theres only a couple of reasons to have fuel leak... Jul 16 2014, 07:07 AM stugray
That is what I meant earlier.
It sounds like you... Jul 15 2014, 09:27 PM Milkman7286
That is what I meant earlier.
It sounds like yo... Jul 16 2014, 07:02 AM jmill The float bowl vent (which is a huge slotted hole)... Jul 15 2014, 10:26 PM Milkman7286
The float bowl vent (which is a huge slotted hole... Jul 16 2014, 07:00 AM jmill
What keeps the fuel from dripping on its own on t... Jul 16 2014, 08:06 AM Milkman7286
What keeps the fuel from dripping on its own on ... Jul 16 2014, 08:13 AM rhodyguy when the engine is running does the engine respond... Jul 16 2014, 08:18 AM Milkman7286
when the engine is running does the engine respon... Jul 16 2014, 08:36 AM stugray This is somewhat related since it sounds like the ... Jul 16 2014, 08:22 AM jmill
Don't stick ANYTHING into the passageways/por... Jul 16 2014, 09:06 AM Milkman7286
Don't stick ANYTHING into the passageways/po... Jul 16 2014, 09:48 AM jmill There's 3 holes that need to be clear. I made... Jul 16 2014, 10:29 AM Milkman7286 Update:
Last night I put in a new seat and needle ... Jul 17 2014, 07:00 AM ThePaintedMan You mentioned in your original post that you ... Jul 17 2014, 07:32 AM Milkman7286
You mentioned in your original post that you ... Jul 17 2014, 11:56 AM jmill
What I'm now wondering is: if the lowest prog... Jul 17 2014, 12:11 PM rhodyguy yep. the 4 progression holes are effectively block... Jul 17 2014, 12:11 PM Milkman7286 Either way I'll look at the throttle plate and... Jul 17 2014, 12:48 PM stugray
I am not as familiar with the 44 options.
Do you... Jul 17 2014, 12:54 PM jmill Again, with the engine off, no fuel should leak ou... Jul 17 2014, 02:22 PM Milkman7286
Again, with the engine off, no fuel should leak o... Jul 18 2014, 10:53 AM |
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