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dominator misbehaving #1553067
12/25/13 06:20 PM
12/25/13 06:20 PM
Joined: Dec 2006
Posts: 4,647
aotearoa
rebel Offline OP
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any of you carb guru's able to help me here? i put my dominator that has been in staorage for a year or so on the new engine in my 'cuda. i bought a 470 cubed Stage VI, added a Super Victor but it runs like a pig. the front 2 plugs are over rich to hell but the rest are ok, when you shut the engine down, the front 2 bbls have like a fog climb out of the top of the carb & it does this for more than a minute. when you depress the accelerator linkage to activate the accelerator pumps, fuel squirts out of the air bleeds??? the fuel level is set right, i can see it thru the windows in the bowls. it's a 1050 Quickfuel with 91 jets on all 4 corners. i've stripped the carb, cleaned out the metering block with carb cleaner & compressed air but it still does this. any ideas?

Re: dominator misbehaving [Re: rebel] #1553068
12/25/13 06:27 PM
12/25/13 06:27 PM
Joined: May 2010
Posts: 207
warren, mich.
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dwayne welder Offline
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Send it back, they will fix it!!!!! They are a great company to deal with!!!! Save yourself time and money and fustration!!!!

Re: dominator misbehaving [Re: dwayne welder] #1553069
12/25/13 06:28 PM
12/25/13 06:28 PM
Joined: Dec 2006
Posts: 4,647
aotearoa
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i'd like to send it back but i didn't mention, i live on the other side of the world.

Re: dominator misbehaving [Re: rebel] #1553070
12/25/13 06:31 PM
12/25/13 06:31 PM
Joined: Oct 2010
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Ambridge, Pa.
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rickraw Offline
top fuel
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Ambridge, Pa.
did u install new gaskets? dommy use's a different metering plate gasket that a 4150.

Re: dominator misbehaving [Re: rickraw] #1553071
12/25/13 06:42 PM
12/25/13 06:42 PM
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Posts: 4,647
aotearoa
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yep, checked the gaskets, holes in metering block match the holes in the gaskets.

Re: dominator misbehaving [Re: rickraw] #1553072
12/25/13 06:42 PM
12/25/13 06:42 PM
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Lynchburg, VA
Leon441 Offline
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Your air bleeds are stopped up. Pull the bowls and metering plates. Spray carb cleaner into the air bleeds up top. Then blow out with compressed air if you have a source. While you have the metering plates off give them a cleaning too.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: dominator misbehaving [Re: Leon441] #1553073
12/25/13 06:44 PM
12/25/13 06:44 PM
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aotearoa
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done that already. using carb clean i traced the flow of the holes in the block. did this more than once in case i cocked up.

Re: dominator misbehaving [Re: rebel] #1553074
12/25/13 07:14 PM
12/25/13 07:14 PM
Joined: Dec 2008
Posts: 1,285
okla.
sam64 Offline
pro stock
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okla.
accelerator pump squirters check stuck?or check ball in bowl under acc. pump stuck open?i.e. the pump shot is not going where it's supposed to.

Re: dominator misbehaving [Re: sam64] #1553075
12/25/13 08:20 PM
12/25/13 08:20 PM
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Akron, Ohio
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Akron, Ohio
Whenever I've had these kinds of problems I usually just put new gaskets in, new needles/seats, and spray carb cleaner through the air bleeds but it sounds like you've already done all this. Is the fuel bowl level set right?

I had a 1050 years ago that just loved to catch on fire no matter what I tried. I tried a different 1050 carb and it didn't do that at all.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: dominator misbehaving [Re: sam64] #1553076
12/26/13 12:39 AM
12/26/13 12:39 AM
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aotearoa
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Quote:

accelerator pump squirters check stuck?or check ball in bowl under acc. pump stuck open?i.e. the pump shot is not going where it's supposed to.



accelerator pumps are working well, the squirt goes out the squirters like you'd expect but as you take your foot off pedal the airbleeds act like gysers & squirt fuel out. i'm going to pull the carb off the manifold & attack the main body this arvo. gotta be something like a spiders web in there or something. i do have a spider problem on the farm here.

Re: dominator misbehaving [Re: rebel] #1553077
12/26/13 01:41 AM
12/26/13 01:41 AM
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Romeo MI
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Quote:

Quote:

accelerator pump squirters check stuck?or check ball in bowl under acc. pump stuck open?i.e. the pump shot is not going where it's supposed to.



accelerator pumps are working well, the squirt goes out the squirters like you'd expect but as you take your foot off pedal the airbleeds act like gysers & squirt fuel out. i'm going to pull the carb off the manifold & attack the main body this arvo. gotta be something like a spiders web in there or something. i do have a spider problem on the farm here.




With what you say about letting off and it squirts
out the bleeds that can be a couple things... fuel
level is climbing in the bowls(either the pressure
is high) or the needle/seats arent closing good...
or the air bleeds are plugged so it doesnt get the
air break

Re: dominator misbehaving [Re: rebel] #1553078
12/26/13 02:07 AM
12/26/13 02:07 AM
Joined: Mar 2008
Posts: 883
Affton MO
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qwkmopardan Offline
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Affton MO
There are two and three circuit dominators. I know if you put a two circuit metering block gasket on a three circuit carb it will run rich and when you shut off engine, fuel will siphon out of bowls right into manifold. I am not sure what happens if you put a three circuit gasket on a two circuit carb, but could possibly cause your issue.

Re: dominator misbehaving [Re: qwkmopardan] #1553079
12/26/13 07:04 PM
12/26/13 07:04 PM
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Posts: 4,647
aotearoa
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it is a 3 curcuit dommy & thats exactly what i checked yesterday when i pulled it apart again. pretty sure i have the correct gaskets as the gaskets i'm using have 2 holes which match the body & the metering block air bleed holes. i have other metering block gaskets but none were quite like these. add to this the gaskets on the secondary side are the same but the problem is mainly with the primary side.i've been using my welding tip cleaners to poke n prod every hole in both the blocks & the body then wash with carb cleaner & compressed air. today is socialising day with friends so i can't test till tommorrow.

mrP, the fuel level is not high, i can see it clearly thru the windows of the bowl, i keep checking this but it's stable as you would expect. i can definately say the airbleed holes are NOT blocked as i chased that senario right from the start.

Re: dominator misbehaving [Re: rebel] #1553080
12/26/13 08:16 PM
12/26/13 08:16 PM
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North Alabama
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Monte_Smith Offline
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North Alabama
Lets look at this in a logical manner, as a carb is a pretty simple thing.........If you operate the acc pump and fuel comes out the bleeds and NOT the squirters, either the gasket is wrong, or the check needle under the squirter is stuck and sending the fuel elsewhere. Since you are positive you have the right gasket and it matches the other end....One, the needle is stuck under the squirter.......OR......the carb is machined wrong and/or has the wrong or improperly machined metering block. The fuel is NOT going where it should. Should be relatively easy to determine why.

Now you say the carb has been in storage. So does this mean it worked fine before, or is new, but just not used since bought. If it worked before SOMETHING is stopped up. If this is the first time used, may be improperly machined

Monte

Re: dominator misbehaving [Re: Monte_Smith] #1553081
12/26/13 09:20 PM
12/26/13 09:20 PM
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Posts: 4,647
aotearoa
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Quote:

If you operate the acc pump and fuel comes out the bleeds and NOT the squirters,


Monte




no, it comes out of both the squirters AND the airbleeds. more so the squirters, the airbleeds squirt when you're taking your foot off the pedal.
i bought this carb, near new second hand a few years ago to upgrade from my 4150 Race Demon, but it didn't actually run any faster than the Demon in ET, only gain was 2 mph. the Demon had better manners driving around the pits so i went back.







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