vacuum leak
08-09-2007, 08:38 PM
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vacuum leak i went to the track a few weeks ago and ran 8.3@84mph in the 1/8 i was playing with the car a few days ago and noticed i had 2 vacuum leaks one was the EGR were it goes into the intake and the other was on the back of the manifold..i want to go to the track this friday .just wondering how those vacuum leaks effected my 1/8 mile times?
08-10-2007, 02:41 AM
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There is no way to answer your question with the info you have provided.
Depending on the size, a vacuum leak can either drastically effect performance or barely at all. The only way to know would be to hook up a scanner and look at stuff like LTFTs, O2s, etc.
Depending on the size, a vacuum leak can either drastically effect performance or barely at all. The only way to know would be to hook up a scanner and look at stuff like LTFTs, O2s, etc.
08-10-2007, 09:27 AM
#3
considering both of these are after the maf and before the front o2s, they can effect the A/F ratios and cause an off tune....car may run rich depending on the computers perception....unmetered air needs to be taken care of, fixing leaks shouldnt be that hard to deal with
08-10-2007, 10:09 PM
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the rear leak was the 5/16th vacuum line that comes off the back of the manifold.and the EGR leak was just the rubber o-ring was crushed to one side all taken care of and know i am getting a code 420 and 430 right and left catalis below thresh hold. mybe the ecu need reset will do it in the morning when i install the new gears..
08-11-2007, 03:20 PM
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YOu were probably(likely?) running rich.
You can try and reset the ECU, but I've never had much luck withthat in these cars.
Chances are you can keep driving like normal and it'll go away on its own. Assuming you've corrected the problem are are no longer running rich.
I had cat efficiancy code a few weeks ago. Bottle ran out and I didn't switch it off, so richness ensued. It cleared up though in probably a week.
You can try and reset the ECU, but I've never had much luck withthat in these cars.
Chances are you can keep driving like normal and it'll go away on its own. Assuming you've corrected the problem are are no longer running rich.
I had cat efficiancy code a few weeks ago. Bottle ran out and I didn't switch it off, so richness ensued. It cleared up though in probably a week.
