I was smelling coolant and noticed that the coolant reservoir was
overflowing. The coolant temperature gauge was showing normal -
increasing to 1/3 scale and holding there. Turned out the cap was the
lever-type and was not sealing well, so I replaced the cap and all is
The thought struck me that if I could monitor the coolant pressure, I
would have a better chance to see more quickly if this happens again.
I've got 0-15psi and 0-30ps gauges on hand. Also a 15-0-30 vacuum
pressure gauge.The 0-15 gauge actually will go to 20psi and easiest to
read, but 15-0-30 would show both pressure and vacuum, which could be
helpful to detect leaks (?)
I have added pressure gauges to industrial tanks and found that 1/8 OD
stainless steel tubing works best. Larger size tubing gives quicker
response but for this purpose 1/8 I think would be fine. Plus 1/8 will
"filter" out any pressure vibrations that sometimes cases gauges to fail
Anyone done this before and recommend a different method?