corrosive red re '33-'35 fuel gauge

[highbeams]

fuel1.jpg


I am posting this to inform you '33-'35 owners that this is the result if one spills the 'red' when filling the gauge(research how to fill the gauge). Beware of the 'red' Do not sniff it!
This gauge condition probably for decades. Thank You!

[petehoovie]

Originally Posted by highbeams

Attachment 537455

[deuce lover]

That occurs when it somehow develops a leak from the sight glass or copper line from brass hex to sight tube.That sight glass tube is open at the top for venting. I have had a multitude of those gauges that had functioned for umpteen years and never had that corrosion.

[deuce_roadster]

If someone tried to blow air into the tank to move fuel up to the pump it could also push the liquid out the top of the glass tube in the gauge. So don't attempt that on a car with a hydrostatic fuel gauge.

[Tim Brown]

Is there a source for the liquid?

[deuce lover]

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Yes, Renners Corner in MI

[dean333]

My gauge read 3/4 when full before I pulled the dash to have it wood grained. The fuel gauge hung upside down for several weeks, now no red is visible. Would blowing air through the 1/8 copper line from the tank blow the red liquid back in in case it drained into the line?

[rockfla]

Originally Posted by dean333

My gauge read 3/4 when full before I pulled the dash to have it wood grained. The fuel gauge hung upside down for several weeks, now no red is visible. Would blowing air through the 1/8 copper line from the tank blow the red liquid back in in case it drained into the line?

Tim
NO, all of your red dye drained out of the glass. You will need to source more dye from Renner's Corner, as Sheldon stated or from Straight-Eight (is who I bought mine from before I knew about Dave Renner) https://straight-eight.com/product-c...rg-model-j-sj/. The only reason for the 1/8 copper line from the gas tank is to apply air pressure from the tank to the gauge to push the red fluid up the sight glass. As the pressure decreases (you burn fuel) the red fluid drops.

[deuce lover]

The copper line from the tank to the hex on the back of the gauge should only have air.The red fluid is only in the hex and sight glass .If your gauge was upside down the red fluid could have spilled back into the line,which I doubt.You should have disconnected the air line at the begining of your project.

If as Robert said that it drained out of the sight glass I suggest you open up that gauge and throughly clean it.