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By stuey - 4 Years Ago
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Hi folks
Do you leave the guage in place or do you replace it with a bung once the fuel pressure is set?
Thanks
stuey
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By charliemccraney - 4 Years Ago
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I leave mine in place. Don't know if its right or wrong. It is technically one more place where a failure can occur. Temperature seems to affect most of them and after they get warm, they are no longer useful for checking pressure.
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By paul2748 - 4 Years Ago
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On the one car that I have a gauge, I left it in place. Don't know if there is a problem with that???
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By stuey - 4 Years Ago
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Thanks for the replies.
I was aware of the temp. problem with the liquid filled guage so I so I got a dry one.
Once the engine is running the needle vibrates quite wildly on the dry one. So I took the middle, about 5 -6 lbs, and locked the regulator down.
Maybe a liquid filled one is the better option despite the temp. thing.
For now I'll replace the guage with a plug.
Thanks again.
stuey
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By charliemccraney - 4 Years Ago
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I've had the temperature problem with both styles. The liquid leaked out of a liquid filled gauge I had, too and I could not tell any difference in how it worked.
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By Daniel Jessup - 4 Years Ago
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charliemccraney (8/1/2020)
I've had the temperature problem with both styles. The liquid leaked out of a liquid filled gauge I had, too and I could not tell any difference in how it worked.
DITTO. I tried the liquid filled and it would initially show correct pressure when the engine was cold. After the engine compartment was warm it read "0" and of course there was no problem - I was getting WOT under load and plenty of fuel. So... I went with a dry gauge. SAME issue almost. I start out at 5.5 psi and drop to 3 psi when the engine is warmed up. My back up electric fuel pump does not even make a difference in the psi reading when I turn it on too so it has to be a gauge problem.
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