where and how to check for vacuum leaks?
03-21-2003, 01:09 PM
#1
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Join Date: Mar 2003
Location: Kitchener
Posts: 166
where and how to check for vacuum leaks?
Ok i just want to make sure i don't have any, but i have no idea what to look for!! can anyone here help me out, all information would be much apreciated, or even if you guys could post a web page about this!!!
Again any extra info that some1 else hasn't added i could use, thnx guys!
Again any extra info that some1 else hasn't added i could use, thnx guys!
03-21-2003, 01:15 PM
#2
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Join Date: Feb 2001
Location: Cincinnati, Ohio
Posts: 3,068
Start on the intake manifold. It has tons of little hoses on it. Make sure they are all on, and snug. Follow these hoses and make sure they are tight on the other end.
Now onto the intake tract. Make sure the filter is firmly attached on the tube, make sure the MAF is sealed all the way around on filter side, and elbow side. Now this is the hard one. Make sure the elbow is connecter around the TB. IT might look connected up top, but the bottom is a PITA to get seated properly. Might not even be noticable unless you take off the elbow and reinstall.
EDIT: forget the MAF part, you dont have one on a 93
Now onto the intake tract. Make sure the filter is firmly attached on the tube, make sure the MAF is sealed all the way around on filter side, and elbow side. Now this is the hard one. Make sure the elbow is connecter around the TB. IT might look connected up top, but the bottom is a PITA to get seated properly. Might not even be noticable unless you take off the elbow and reinstall.
EDIT: forget the MAF part, you dont have one on a 93
03-21-2003, 01:56 PM
#3
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Join Date: Mar 2000
Location: Point Pleasant, NJ... USA
Posts: 1,955
Re: where and how to check for vacuum leaks?
Originally posted by bachehbad
Ok i just want to make sure i don't have any, but i have no idea what to look for!! can anyone here help me out, all information would be much apreciated, or even if you guys could post a web page about this!!!
Again any extra info that some1 else hasn't added i could use, thnx guys!
Ok i just want to make sure i don't have any, but i have no idea what to look for!! can anyone here help me out, all information would be much apreciated, or even if you guys could post a web page about this!!!
Again any extra info that some1 else hasn't added i could use, thnx guys!
On the radiator support, there's a diagram of all your vacuum hoses and routing, etc...
That's a good place to start...
03-21-2003, 03:34 PM
#6
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Join Date: Jun 2002
Location: San Jose, CA
Posts: 798
When the engine is COLD, spray carb cleaner around the intake manifold and other possible vaccum leak areas. If the idle increases you've found a leak.
Or, you could use something that is NON-Flammable which would cause the engine to chug or die a little. I would say the non-flammable approach is safer so maybe something like Nitrogen spray would be better.
Either way if the idle rate changes you've found a leak (actually an opening that is sucking in air).
Hal
Or, you could use something that is NON-Flammable which would cause the engine to chug or die a little. I would say the non-flammable approach is safer so maybe something like Nitrogen spray would be better.
Either way if the idle rate changes you've found a leak (actually an opening that is sucking in air).
Hal
03-21-2003, 11:59 PM
#10
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Join Date: Dec 1969
Location: Little Rock, AR
Posts: 27,709
Originally posted by Wild1
I haven't seen the vacuum junction on the Radiator Support. I'll be under the car tomorrow... where is it located specifically?
I haven't seen the vacuum junction on the Radiator Support. I'll be under the car tomorrow... where is it located specifically?
There is a hose that goes by the battery to the vacuum tank, though. Mine had a hole in it from rubbing on the metal where it makes the turn. It was causing my IAC counts to be way low. See my Tech Page for vacuum connections.
03-23-2003, 07:35 PM
#13
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Join Date: Mar 2001
Location: Nashville, TN
Posts: 3,445
Originally posted by Hal Fisher
When the engine is COLD, spray carb cleaner around the intake manifold and other possible vaccum leak areas. If the idle increases you've found a leak.
Or, you could use something that is NON-Flammable which would cause the engine to chug or die a little. I would say the non-flammable approach is safer so maybe something like Nitrogen spray would be better.
Either way if the idle rate changes you've found a leak (actually an opening that is sucking in air).
Hal
When the engine is COLD, spray carb cleaner around the intake manifold and other possible vaccum leak areas. If the idle increases you've found a leak.
Or, you could use something that is NON-Flammable which would cause the engine to chug or die a little. I would say the non-flammable approach is safer so maybe something like Nitrogen spray would be better.
Either way if the idle rate changes you've found a leak (actually an opening that is sucking in air).
Hal
Q