After searching the board and looking at my Haynes manual, I still would like more info on finding a vacuum leak. Most things I read on the board people just say spray starting fluid around and see if car acts differently. Haynes says listen with piece of hose for hissing sound or spray with soapy water solution.
I did the hose method and there is a hissing noise all around the throttle body and intake.
I would like to know how to pin point the exact leak...
Will spraying soapy water solution around the throttle body and intake bubble? Seems to me it would be sucked in making no bubble.
Is the spraying of starting fluid the best method? How exactly is the car supposed to act to prove a leak is there?
Anyone having done any of these methods or know any hints or tips please reply in detail if possible.
Thanks...

BTW... Here is my last log file if anyone would like to chime in.

 

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Yea, I would want to know too

 

anyone?

 

If there is a leak, starting fluid would be sucked in causing the idle to change. Soap is not going to bubble, because it would get sucked in, too.

You can check individual hoses by isolating and plugging them to see if the hoses will hold vacuum (using a hand pump is most convenient). You can also use a vacuum gauge on the end of hoses and compare that reading to a reading at the hose's origin.

You must have some reason to suspect that you actually have a leak.

 

Car stumbles, misfires, and the computer is dumping fuel to keep it running...
I have found a few bad hoses that I replaced (both on passenger side of throttle body). I also tightened up the silencer on the intake elbow.
I still hear a hissing sound up front somewhere around the throttle body and intake.
In several previous posts where I was trying to trouble shoot problems injuneer and several other members seem to think my symptoms point to a vacuum leak.

Here is my last log file.


Link to one of my posts...

 

take a cigerette and move it around your engine bay, see where the smoke gets sucked torwards

doesn't work if your fans are on however...

 

youy can also take a small can of propane and move it around while looking at the 02 sensor data and watching for it to respond to the change from the propane. do you have a stock TB? I know wthere have been some problems with some aftermarket TB's. also do you clean yours with carb cleaner and not lube the shaft? when you clean the TB out you should shoot some WD40 or the like on te throttle shaft otherwise you clean it all off when you spary carb cleaner on it and in time it will wear the casing of the TB and cause a leak

 

Thanks for the suggestions everyone...
I will give them a try ASAP.

 

WD40. It kinda closes the leak momentarily and gives you a correct idle.

 

Didn't realize there where so many people from Louisiana on here...

Thanks again.

 

Buy a Vacum gauge like 15bucks or so from AutoZone.