Vacuum
- Thread starter USMstang
- Start date
I'm using an adjustable vacuum switch on my water injection and I pretty sure it (the switch) is not functioning properly. I have adjusted it in increments and the results are not monumental in difference. I have an led which lets me know when it is activated. I know that either the switch is defective or I am not utilizing a good vacuum source. I tapped into the vacuum line on the back side/left of the motor (looking from the front).
If you have a certain value that you're looking for (i.e. your setup requires a tap to a line with vacuum of more than 10hg or something,) you could always buy a cheap vacuum gauge from Walmart, etc, and check each line until you find one which suits your needs.
I'm not familiar at all with your setup, so that's just a very basic recommendation.
Good luck to you.
I'm not familiar at all with your setup, so that's just a very basic recommendation.
Good luck to you.
jstreet0204
Active Member
Try tapping the vacuum line going to the fuel pressure sensor. I know that is a good source since that is the source used for the bypass on my supercharger. If that one doesn't work, you know it is the switch.
jstreet0204
Active Member
It's still there. I think it's a bad switch because the line I'm tapped into originates at the same point as the one for the fuel pressure sensor. I appreciate the help with this one. Because we are still feeling the effects of Katrina down here, it's tough getting to parts houses and/or wal mart or wherever. All those places are either destroyed or work limited hours...still! I can order another switch for a lot less pain than driving around searching. Thanks again to ya'll for responding.
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