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Fuel hanging / bubbling in booster...

Xp29h

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I recently picked up a Holley 950. It needed a kit and a cleaning at it has been preserved pretty well. I through a good cleaning to it with Berryman chem dip and good old fashioned hot water after. Used compressed air to blow it all out.

Fast forward couple days when we through it on the new engine. The 512 stroker. Once we got the bowls filled and fuel flowing, the motor fired up. Adjusted the idle and air mixture screws. Once we settled the idle, on one of the boosters, we could see fuel holding in the middle if the booster. When we hit the throttle, the squirter shot fuel but seemed like it was adding a second shot. I've never seen this before. It was only on the front drivers side booster. All the others were fine. I figured one or two things.. 1. The carb has adjustable air bleeds and they are the wrong size 32's and 72's. Or I didn't clean it as well as I could have and it has a plugged line somewhere.

I'm not a carb guy. I'm learning but not fast enough apparently! I know holley's can be tricky at times, I thought I'd turn here to see if anyone had run into this before. I do not have a video of this happening. The carb is off the car right now. I lan to set it up the same as the 850 that is on it now and go from there. Once that is done, I'll put it back on and see what happens. I will take video to show if it happens again.

Any thoughts! Anyone seen fuel hanging in a booster?

Here's a pic of the carb.

Thanks!

- - - Updated - - -

I did a YouTube search. I didn't find exactly what it's doing but close. This also isn't the exact carb.

When they open the throttle and the squirter start to dump fuel to the booster. One can see the booster hold the fuel. When they release the throttle the squirter stops and the fuel drains out of the booster. In my situation that fuel in the booster never drains out. It stays there even when goes back to idle. Hope this helps clarify..

https://m.youtube.com/watch?v=chNqanBA8G8
 

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Thought about moving this to the jokes forum but figured the racers' hangout would be better :grin: What do the boosters look like if you open the throttle slowly or if you slowly open the throttle once the engine is up on some rpm? I just don't know what the stock Holley air bleed sizes are but here's more into on tuning. Unless someone knows what they are, you will have to call Holley and hope you get a hold of someone there that knows.

http://documents.holley.com/199r10016-2rev1.pdf

http://www.hotrod.com/how-to/engine/ccrp-0807-holley-carburetors-basics-guide/
 
That's funny! It doesn't matter on the 950 how you open the throttle, slow or fast. Fuel stays in that booster kind of reminds me of those old bubble bottles with the little wand. You dip it in and you can see the bubble right there. Lol
 
How does the car run ? Even when you see the fuel there is it idling and driving ok ? Ron
 
I'am guessing the gas is doing some cleaning and picking up something thats giving it enough surface tension to act like that. Soap possibly,just like that bubble stuff which is soap.
 
It wasn't great. Little hesitation it acted like getting bogged down a little. It's like it was holding the shot and then getting another.

If I had used soap to clean it, I would think the same. That's why acting like it is surprises me. Unless I just didn't get it cleaned good enough!

I'm gonna go over the carb again. Set it up very similar to the 850 on it now and test it out. I'll give it another good cleaning and make sure all passages are clear too. The we'll try again. I'll shoot a video next time to try to capture what it's doing if it acts that way again.

Thanks for the thoughts!
 
A couple of good/decent tuning books, more knowledge the better

I must say thou, I've never noticed what or how, what your describing happening...

call Holley's Tech line, 866-464-6553
or try http://www.holley.com/support/ check out the links
I believe they may still even have a forum too

or call Promax Carbs 317-484-1451
or go to http://www.promaxcarbs.com/
or go to the tech line sect. in the above link & it has an e-mail for tech stuff

better yet call Quickfuel 270-793-0900
& talk with their tech guys

Air bleeds basics
http://www.quickfueltechnology.com/tech-info/carburetors/carb-class/carb-class-air-bleed-basics

more instruction links
http://www.quickfueltechnology.com/tech-info/instruction-sheets

pick a link here
http://www.quickfueltechnology.com/tech-info/carburetors/

also try Chuck Nuytten Carburetor Specialty Services 972-722-8333
or look http://www.chucknuytten.com/c_accessories.htm

google search Holley Tuning too
I'm sure there'd be a ton of helpful inks there too
 

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Budnicks, thanks!! Ive picked up a couple of those books. You're right, the more knowledge, the better! But, I know its definitely weird. My builder hadn't seen it before either. I'm hoping to get the carb today, go all over it and throw it on again soon. I will be taking video in case it does it again.
 
Plan on a good clean again and I'll be throwing it back on this week. I'll post the video then! Watch, it won't do it! Oh well. Thanks!
 
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