How to Vac gauge
#11
#12
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The write up is decent, but your pictures are not so good...
*Moved to Article Submission/Discussion*
BTW, I'm not the only one that can move it...
*Moved to Article Submission/Discussion*
BTW, I'm not the only one that can move it...
#13
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![Icon Shrug](https://blazerforum.com/forum/images/smilies/icon_shrug.gif)
#14
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How about something that is in focus so you can actually see what you are doing..?
#15
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An idea...
Take pictures of the materials laid out
Take before pictures with sufficient lighting
Note in the pictures with circles where what what is
Take after with similar notes
Suggestion for ya... I know its already installed but idk..
Take pictures of the materials laid out
Take before pictures with sufficient lighting
Note in the pictures with circles where what what is
Take after with similar notes
Suggestion for ya... I know its already installed but idk..
#16
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Also, you want to make sure that you 't' into the engine side of the check valve that is in the line. If not, your gauge will not read actual engine vacuum all the time, only in high vacuum instances. Once the manifold vacuum level drops (WOT), the check valve will close and all vacuum powered accessories will use the vacuum stored in the reservoir located inside the driver side fender. If you are behind the check valve, you might as well connect to the vacuum feed to the HVAC control module under the dash and not pass any lines through the firewall.
#17
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![Icon Wink](https://blazerforum.com/forum/images/smilies/icon_wink.gif)
Also, you want to make sure that you 't' into the engine side of the check valve that is in the line. If not, your gauge will not read actual engine vacuum all the time, only in high vacuum instances. Once the manifold vacuum level drops (WOT), the check valve will close and all vacuum powered accessories will use the vacuum stored in the reservoir located inside the driver side fender. If you are behind the check valve, you might as well connect to the vacuum feed to the HVAC control module under the dash and not pass any lines through the firewall.
alright i'll check that out tomorrow and change the write up if its on the wrong side
![Icon Doh](https://blazerforum.com/forum/images/smilies/icon_doh.gif)
alright ill put some more pics up tomorrow
Last edited by Spectreblazer; 01-13-2010 at 08:17 PM. Reason: Combining Consecutive Posts - Please use the EDIT function to add additional information to your post if another member has yet to reply. Consecutive Posting is prohibited by the rules of the forum.
#18
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Also, you want to make sure that you 't' into the engine side of the check valve that is in the line. If not, your gauge will not read actual engine vacuum all the time, only in high vacuum instances. Once the manifold vacuum level drops (WOT), the check valve will close and all vacuum powered accessories will use the vacuum stored in the reservoir located inside the driver side fender. If you are behind the check valve, you might as well connect to the vacuum feed to the HVAC control module under the dash and not pass any lines through the firewall.
#19
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I believe the module that you are talking about is just the vacuum reservoir. The check valve is what allows the reservoir to work properly. It is like an air compressor, but in reverse. The reservoir stores the high level of engine vacuum for use by the HVAC and 4wd system (if equiped) when the engine is under low manifold vacuum conditions (WOT). So for a vacuum gauge to read properly, you need to be on the true engine side of the check valve in order to see the drops in vacuum when you hit the throttle.
#20
![Default](https://blazerforum.com/forum/images/icons/icon1.gif)
I believe the module that you are talking about is just the vacuum reservoir. The check valve is what allows the reservoir to work properly. It is like an air compressor, but in reverse. The reservoir stores the high level of engine vacuum for use by the HVAC and 4wd system (if equiped) when the engine is under low manifold vacuum conditions (WOT). So for a vacuum gauge to read properly, you need to be on the true engine side of the check valve in order to see the drops in vacuum when you hit the throttle.