Re: 440 - Eddy 750 - Stumble but rich and not lean
[Re: mike s]
#1611389
04/26/14 12:58 PM
04/26/14 12:58 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I had misread that the idle was now in spec. I would stay on that/get it right before I moved on to "cruise"
live every 24 hour block of time like it's your last day on earth
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Re: 440 - Eddy 750 - Stumble but rich and not lean
[Re: bee1971]
#1611396
04/27/14 08:21 PM
04/27/14 08:21 PM
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Joined: Apr 2008
Posts: 117 Aus
hysteric
member
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member
Joined: Apr 2008
Posts: 117
Aus
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Quote:
All Classic Symptoms Of The 1407/1411 That You Are Experiencing
With that said , I will keep my negative comments to myself , and the one thousand other negative threads that I could post about the 1407/1411
Good Luck , At Least Your Making Progress
With that said:
Eddie 750 thread on Speedtalk
From what i understand the you are encountering another issue with it going rich. You can also disconnect the accelerator pump and test the transfer slot and see how it runs. You will have to ease into the throttle though but it will still drive just dont do any sudden accelerating as it will bog.
Hope this helps
Hysteric
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Re: 440 - Eddy 750 - Stumble but rich and not lean
[Re: Steve Bryant]
#1611397
04/27/14 10:45 PM
04/27/14 10:45 PM
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Joined: Mar 2006
Posts: 9,982 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,982
MI, usa
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Quote:
Hysteric, that is an excellent post. Thank you for the link. I am looking at the chart now and I agree that my 440 is far happier with an idle between 11.7-12.6. I get far better vacuum readings with that A/F
My problem is when RPMs increase off-idle, the mixture drops in A/F to 10-11 and I get a stumble in power. After the quick stumble it starts to lean out as it should. I only get this from idle. If I lean the idle mixture to 13-14 then the drop and stumble is not as bad.
On the other end, the power is 1-2 points too lean even with the jet and rod changes and my WOT is still too lean as well. I am hoping some spring changes today may help with those too.
As for the low-end rich stumble, I may replace the nozzle on the accelerator to get a leaner injection to help me get that smooth transition from idle to cruise that is shown in the chart you posted.
Are the metering rods lifting early? Try softer metering rod springs. Doug
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Re: 440 - Eddy 750 - Stumble but rich and not lean
[Re: bee1971]
#1611398
04/27/14 10:51 PM
04/27/14 10:51 PM
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Joined: Mar 2006
Posts: 9,982 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,982
MI, usa
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Quote:
Quote:
Hysteric, that is an excellent post. Thank you for the link. I am looking at the chart now and I agree that my 440 is far happier with an idle between 11.7-12.6. I get far better vacuum readings with that A/F
My problem is when RPMs increase off-idle, the mixture drops in A/F to 10-11 and I get a stumble in power. After the quick stumble it starts to lean out as it should. I only get this from idle. If I lean the idle mixture to 13-14 then the drop and stumble is not as bad.
On the other end, the power is 1-2 points too lean even with the jet and rod changes and my WOT is still too lean as well. I am hoping some spring changes today may help with those too.
As for the low-end rich stumble, I may replace the nozzle on the accelerator to get a leaner injection to help me get that smooth transition from idle to cruise that is shown in the chart you posted.
All Classic Symptoms Of The 1407/1411 That You Are Experiencing
With that said , I will keep my negative comments to myself , and the one thousand other negative threads that I could post about the 1407/1411
Good Luck , At Least Your Making Progress
I find it quite comical that you seem to show up on every Edelbrock carb post. Never any helpful tips or information, just that they're terrible. Why do you bother? Doug
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Re: 440 - Eddy 750 - Stumble but rich and not lean
[Re: dvw]
#1611399
04/27/14 11:59 PM
04/27/14 11:59 PM
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Joined: Feb 2003
Posts: 2,819 Sobieski Wi
bee1971
master
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master
Joined: Feb 2003
Posts: 2,819
Sobieski Wi
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Quote:
Quote:
Quote:
Hysteric, that is an excellent post. Thank you for the link. I am looking at the chart now and I agree that my 440 is far happier with an idle between 11.7-12.6. I get far better vacuum readings with that A/F
My problem is when RPMs increase off-idle, the mixture drops in A/F to 10-11 and I get a stumble in power. After the quick stumble it starts to lean out as it should. I only get this from idle. If I lean the idle mixture to 13-14 then the drop and stumble is not as bad.
On the other end, the power is 1-2 points too lean even with the jet and rod changes and my WOT is still too lean as well. I am hoping some spring changes today may help with those too.
As for the low-end rich stumble, I may replace the nozzle on the accelerator to get a leaner injection to help me get that smooth transition from idle to cruise that is shown in the chart you posted.
All Classic Symptoms Of The 1407/1411 That You Are Experiencing
With that said , I will keep my negative comments to myself , and the one thousand other negative threads that I could post about the 1407/1411
Good Luck , At Least Your Making Progress
I find it quite comical that you seem to show up on every Edelbrock carb post. Never any helpful tips or information, just that they're terrible. Why do you bother? Doug
Its not my problem that 90% of the Edelbrock posts on this website are directed at the 1407/1411 Series Carbs
And I only state that the 1407/1411s are terrible , so lets clear that up right away
Anyways , to answer your question
To save people alot of headaches , alot of wasted time spent working on something that cant bee fixed without drilling this that and , alot of money also - But I guess guys like you cant read very well - Click on the link that Hysteric posted , some pretty valuable info in there - I could post some more links if you like ??? Chances are you wouldn't read those either ,or just read what you want or might understand - There was a thread a few weeks ago - Even an Edelbrock Tech basically said the very same thing in that thread , Don't you find that kind of comical , An Edelbrock Tech would say such a thing ???
Helpful , its called - EDELBROCK 800 1412/1413 Series or EDELBROCK 650/800 AVS Series !!!
You can thank me later
Last edited by bee1971; 04/28/14 12:12 AM.
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