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Author Topic: Setting up the new carb--pointers?  (Read 14436 times)

Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #15 on: December 21, 2011, 04:59:04 PM »
Cliff--

Haven't installed yet.  Did I ruin it by filling the holes with epoxy?
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Offline Cliff Ruggles

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Re: Setting up the new carb--pointers?
« Reply #16 on: December 22, 2011, 04:09:33 AM »
Wouldn't matter what was used to plug the holes, as long as it stays put.....Cliff
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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #17 on: January 05, 2012, 04:43:00 PM »
Runs great, just a little hesitation when the secondaries open.  What do you think?
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Offline Cliff Ruggles

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Re: Setting up the new carb--pointers?
« Reply #18 on: January 06, 2012, 04:14:22 AM »
Secondary transition is fully adjustable using the adjustment spring.  Make sure the link from the pull-off is holding the airflaps tightly closed at idle (high vacuum)......Cliff
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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #19 on: March 14, 2012, 04:38:37 PM »
Since I filled the idle air bypass holes the idle is good, but it acts like a v.leak, surging on the v.guage and rpm's, mostly at 16 on guage, then up to 17, and quickly drops to 14 for a second, then up to 16 again.  (At idle with the Edelbrock on I read 19 on the v.guage.)

I've sprayed around base with s.fluid and there doesn't seem to be leak. I also sealed up choke housing good. I can, and I don't know if this is normal, see fuel dribbling out the p. boosters.

Cliff, do you have any ideas? Thank you.
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Offline Cliff Ruggles

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Re: Setting up the new carb--pointers?
« Reply #20 on: March 20, 2012, 04:20:31 AM »
Did you adjust the idle mixture screws to give it some more idle fuel.  If it has nozzle drip, it's not completely on the idle curcuit.  Usually this means it's to lean, or needs some bypass air, or both....Cliff
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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #21 on: March 20, 2012, 05:09:31 PM »
I'll try to back out the mix screws past where I normally would, and see it that stops the surging and the nozzle drip.

If that doesn't help, should I remove the restrictions in the bypass air that I got from you?  Because with the main bypass holes now plugged, I don't know how to get the carb more air.

Thanks.

I should mention that the only vacuum line I have connected why trying to tune it is the pcv line.
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Offline Cliff Ruggles

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Re: Setting up the new carb--pointers?
« Reply #22 on: March 21, 2012, 04:12:35 AM »
Are you using vacuum advance?  It should be hooked up when tuning....Cliff
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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #23 on: March 21, 2012, 08:10:19 AM »
How do I get it more air and make it stop surging? You said when it is pulling fuel from the boosters it is a sign it needs more air and could be lean too. 

Should I remove your restrictions I placed in the air bypass?

Should I drill out the idle tube restrictions and/or the mix screw holes? 

Thank you.
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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #24 on: March 21, 2012, 10:51:15 PM »




Now that I have plugged the idle bypass air holes in the throttle body, should I remove these restrictions to supply more air?

BTW, I did drill the mix holes slightly.
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Offline Cliff Ruggles

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Re: Setting up the new carb--pointers?
« Reply #25 on: March 22, 2012, 04:44:28 AM »
Those are main airbleeds, and have nothing to do with idle fuel, or idle air.....Cliff
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Offline 73 Z28

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Re: Setting up the new carb--pointers?
« Reply #26 on: March 22, 2012, 11:06:11 AM »
From your pictures, it looks like your idle tube is missing, did you remove it?

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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #27 on: March 22, 2012, 11:09:20 PM »
You must be referring to the top photo.  At the time of the photo they were prob. out.  I bought replacements from Cliff, and hopefully they are back in.  That would have been a real goof, ah? 

CLIFF, besides drilling the mix orifices, what should be the next step to make this idle right w/o the surging?

Thanks.
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Offline F250 Restorer

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Re: Setting up the new carb--pointers?
« Reply #28 on: March 22, 2012, 11:55:41 PM »
Cliff, can you please help me with this carb.  I was advised to plug the bypass holes in the t.body completely.  Now you state it may need more bypass air and/or be lean.  Where do I go from here? Please advise.
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Offline Cliff Ruggles

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Re: Setting up the new carb--pointers?
« Reply #29 on: March 23, 2012, 04:25:04 AM »
Reading back thru the thread, it appears that you had high idle issues, and couldn't get the engine to idle down.  Now you have "nozzle drip"?  Sounds like it doesn't have enough idle fuel to the mixture screws for what you are doing.

I'd back the mixture screws out to see if you can get the idle to smooth out.  If they have no effect I'd open up the idle tubes, or close down the idle airbleeds, or both.  What size are the holes under the mixture screws?.....Cliff
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