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Very low vacuum and terrible idle

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Old Feb 29, 2008 | 06:27 AM
  #1  
tvor's Avatar
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Exclamation Very low vacuum and terrible idle

Help me diagnose these logs Please! I can take more with different values too if need be, just tell me what, lol.

I can't find any vacuum leaks, boost leak test turns out just fine, just a slight slight bit at the Throttle body and a a bit coming out of the oil cap. Going to compression test this weekend, but since i checked for dead holes already by pulling spark plug wires one at a time I don't think (read: hope) it's not a burnt ring or anything.

Power feels fine, it's just the immensely terrible idle and between 5-10 inches of vacuum.


old thread for reference:
https://www.evolutionm.net/forums/sh...d.php?t=325590
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Old Feb 29, 2008 | 06:36 AM
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Have you checked to see if the MAF is plugged all the way in?

Here are some symptoms of different vacuum readings.
http://www.iwemalpg.com/Vacuum_gauge.htm
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Old Feb 29, 2008 | 09:02 AM
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Yeah I checked the MAF multiple times Thanks for that link...maybe my timing really did skip a tooth.
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Old Mar 5, 2008 | 01:27 PM
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Really..nothing?
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Old Mar 5, 2008 | 01:37 PM
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Check your EGR hoses that are under the Throttle Body.

Even a small leak there can cause idling issues.
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