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Old 11-08-2017, 04:18 PM   #21
City: Melbourne, FL
Join Date: Dec 2014
Posts: 1,689
Take a short piece of vinyl tubing, put one end outside the ER, and then have a loop down and back up inside the engine room. Fill it with a bit of colored water and see what vacuum / pressure you have on your ER. That's the cheapest vacuum gauge you can get.

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Old 11-09-2017, 12:16 AM   #22
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City: Gibsons, B.C., Canada
Vessel Name: Island Pride
Vessel Model: Palmer 32'
Join Date: Oct 2007
Posts: 3,455
If you are curious about E.R. temps then get an inexpensive [??], battery operated electronic thermometer with a remote accessory sensor. Radio Shack and others sell them for ~ $25-40.

Mount the remote where you want and see what it reads. Move it around to get an idea of what the E.R. temps are. THere will be cooler and warmer spots.

Many of those thermometers can use more than one remote so consider that too.

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