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> Air/Fuel mixture, manual adjustments possible?
newto914s
post Sep 22 2004, 08:51 AM
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I was wondering if their is anyway to manualy adjust the air/fuel mixture on a 2L with stock d-jet fuel injection. I really feel like my car is running rich and I hear a good sized sucking nose coming from my throtle plate.
It sounds and feels like my car can't breath.
Thanks
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mike_the_man
post Sep 22 2004, 11:33 AM
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QUOTE(newto914s @ Sep 22 2004, 09:18 AM)
Is it possible to confuse the idle mixture knob with the idle adjustment knob(i.e. raise the idle, or appear to do so)?


The idle adjustment screw is on the throttle body. Cranking it out will raise the idle, cranking it in will lower the idle. The idle mixture adjustement is on top of the ECU, which is located on the firewall, under the battery. It should be pretty tough to get these two confused.

Adjusting the idle mixture will definitely change the RPMs at idle though. The only way to properly set it is to use an O2 sensor, or some other type of exhaust gas analyzer.

Check all FI components and make sure there are no vaccuum leaks. Then set the idle mixture, and then you should be able to adjust the idle speed properly.

Good luck,
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Posts in this topic
newto914s   Air/Fuel mixture   Sep 22 2004, 08:51 AM
ArtechnikA   fix whatever's broken, and the AFR will be mag...   Sep 22 2004, 09:00 AM
mike_the_man   Take a look through Brad Ander's web page. Pr...   Sep 22 2004, 09:03 AM
newto914s   Thanks Mike, I've seen Brad's site before....   Sep 22 2004, 09:15 AM
Bleyseng   Yes, it can be done but only after everything else...   Sep 22 2004, 10:02 AM
mike_the_man   You can also adjust the idle mixture using the kno...   Sep 22 2004, 10:58 AM
newto914s   Is it possible to confuse the idle mixture knob wi...   Sep 22 2004, 11:18 AM
Demick   If it is running to rich or too lean, then there i...   Sep 22 2004, 11:21 AM
Demick   Don't be concerned too much with the sucking s...   Sep 22 2004, 11:25 AM
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