Idle and rich help
Joined: Sep 2012
Posts: 3,299
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From: Greenwood, AR
On E85? If so, you should be able to get those to idle in the mid 14's. What are you changing to lean it out?
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Joined: May 2008
Posts: 3,791
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From: Around
Originally Posted by siadam' timestamp='1403667465' post='23217063
What fuel, and what injectors do you have.
Big injectors are alot harder to idle low.
My ID2200's idle around 1000 and sit in the 11.4 range. I lean it out, and it coughs, and hiccups, drop it down, baby smooth.
Big injectors are alot harder to idle low.
My ID2200's idle around 1000 and sit in the 11.4 range. I lean it out, and it coughs, and hiccups, drop it down, baby smooth.
Yes, e85.
The fuel map where it idles.
Joined: Sep 2012
Posts: 3,299
Likes: 212
From: Greenwood, AR
Most of your idle is made up with injector latency/offset/dead time. You'll have much better results playing with that constant than you will with the fuel map itself.
IPW = Injector Latency + commanded fuel.
IPW = Injector Latency + commanded fuel.
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Joined: May 2008
Posts: 3,791
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From: Around
Appreciate the tip, anything particular / specific I should look into?
Thread Starter
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Joined: Jun 2012
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im running id 850 injectors. i just replaced all the cushions today for the injectors. car is idling at 10.3-10.4 now at around 1100 rpm.
running on 93 pump.
have a aem failsafe wide band and boost gauge. the wideband is located about 1 foot away from the turbo.
running on 93 pump.
have a aem failsafe wide band and boost gauge. the wideband is located about 1 foot away from the turbo.
Thread Starter
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Joined: Jun 2012
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To determine the problem we need more information.
Was the car tuned and running fine and all of a sudden started to run rich? Or had you tuned it and then the problem with the rich idle came after that? How are you measuring your AFRs, if you have a gauge in the car why did the tuner decide to use his sniffer rather than your WBO2 (I'm assuming that you are running a wideband, if it isn't then you are almost better off guessing)?
If you do think that the injectors are leaking then take them out and get them tested.
Was the car tuned and running fine and all of a sudden started to run rich? Or had you tuned it and then the problem with the rich idle came after that? How are you measuring your AFRs, if you have a gauge in the car why did the tuner decide to use his sniffer rather than your WBO2 (I'm assuming that you are running a wideband, if it isn't then you are almost better off guessing)?
If you do think that the injectors are leaking then take them out and get them tested.
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Joined: Jan 2011
Posts: 4,624
Likes: 10
Originally Posted by surfer_crx' timestamp='1403637243' post='23216324
To determine the problem we need more information.
Was the car tuned and running fine and all of a sudden started to run rich? Or had you tuned it and then the problem with the rich idle came after that? How are you measuring your AFRs, if you have a gauge in the car why did the tuner decide to use his sniffer rather than your WBO2 (I'm assuming that you are running a wideband, if it isn't then you are almost better off guessing)?
If you do think that the injectors are leaking then take them out and get them tested.
Was the car tuned and running fine and all of a sudden started to run rich? Or had you tuned it and then the problem with the rich idle came after that? How are you measuring your AFRs, if you have a gauge in the car why did the tuner decide to use his sniffer rather than your WBO2 (I'm assuming that you are running a wideband, if it isn't then you are almost better off guessing)?
If you do think that the injectors are leaking then take them out and get them tested.
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Joined: Sep 2009
Posts: 107
Likes: 0
From: London and Cyprus
Any solution on this?
I have the same problem.
N/A car, tuned. I do have an AEM UEGO wideband..
Tuner said that (maybe) not all cylinders get the proper fuel and this causes the afr to fluctuate at idle. So he set it to be really rich 10.5-11.5 to avoid rough idle..
What are the main causes for cylinders to not receive the same fuel?
1) bad/dirty injectors (?)
2)
3)
Any ideas?
I have the same problem.
N/A car, tuned. I do have an AEM UEGO wideband..
Tuner said that (maybe) not all cylinders get the proper fuel and this causes the afr to fluctuate at idle. So he set it to be really rich 10.5-11.5 to avoid rough idle..
What are the main causes for cylinders to not receive the same fuel?
1) bad/dirty injectors (?)
2)
3)
Any ideas?
Joined: Oct 2002
Posts: 8,044
Likes: 6
From: South Florida
Any solution on this?
I have the same problem.
N/A car, tuned. I do have an AEM UEGO wideband..
Tuner said that (maybe) not all cylinders get the proper fuel and this causes the afr to fluctuate at idle. So he set it to be really rich 10.5-11.5 to avoid rough idle..
What are the main causes for cylinders to not receive the same fuel?
1) bad/dirty injectors (?)
2)
3)
Any ideas?
I have the same problem.
N/A car, tuned. I do have an AEM UEGO wideband..
Tuner said that (maybe) not all cylinders get the proper fuel and this causes the afr to fluctuate at idle. So he set it to be really rich 10.5-11.5 to avoid rough idle..
What are the main causes for cylinders to not receive the same fuel?
1) bad/dirty injectors (?)
2)
3)
Any ideas?