 Too much air through AAR, valve? |
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| mtndawg |
 Jan 18 2010, 11:01 AM
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Member  Group: Members Posts: 414 Joined: 26-January 09 From: Granite Bay, Ca Member No.: 9,985 Region Association: None 
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I've been looking for info on the AAR and most of the discussions have been about the AAR being stuck closed. I'm wondering if mine is letting too much air through at start up? I've got my 1.7L d-jet pretty close to where I want it. When it's warm I'm idling around 900ish. Vacuum lines are new and fuel pressure is perfect.
When the engine is cold and I start it up, it jumps to 2000 to 2300 rpm. When I take the hose off the AAR it's sucking a LOT of air. Restricting it with my thumb of course drops the idle. After about 3 minutes the valve is closing and the idle drops on it's own. There's also a little white smoke at start up. What do the experts think? |
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| tod914 |
Jan 18 2010, 04:46 PM
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Advanced Member Group: Members Posts: 3,755 Joined: 19-January 03 From: Lincoln Park, NJ Member No.: 170 |
You could experiment with a plug in the airline with a center hole. That should allow less air in and give you not so high of an idle on start. Maybe a rubber stopper in the airbox port from the inside?
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Posts in this topic
mtndawg Too much air through AAR Jan 18 2010, 11:01 AM
ConeDodger I am no expert but it sounds like it is doing what... Jan 18 2010, 11:04 AM mtndawg Shouldn't it start to idle around 1500 to 1800... Jan 18 2010, 11:09 AM
ConeDodger
Shouldn't it start to idle around 1500 to 180... Jan 18 2010, 11:15 AM underthetire Your close enough! It depends on where the mi... Jan 18 2010, 11:14 AM SLITS that's a bit high on the cold idle, but nothin... Jan 18 2010, 11:47 AM pbanders I've been doing a lot of research into the AAR... Jan 18 2010, 12:26 PM |
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