Re: Motometer and loose fit/leaking water.

Posted by Ray C on Oct. 15, 1998 at 17:27:11

In Reply to: Motometer and loose fit/leaking water.
posted by J.R. Aiello on Oct. 15, 1998 at 13:47:56

: Ah, more of the simple questions.

: I have a motometer on my '30 Sport Coupe. When it gets warm, and the engine gets into high rpms, I get green foam coming out of the neck of the radiator. I really thought there was something wrong. Sprayed the radiator shell, windshield, everything. I have water/anti-freeze inside, so I guess that's where the color comes from.

: I installed a new gasket between the cap and radiator neck, and a new one between the cap and the motometer. There seemsed to be a cork gasket up under the motometer upper part but I couldn't find a replacement for that, just the neoprene red on the goes on top of the lower half (above the hex screws). The problem is, the meter seem loose when I close it on the cap, like the red gasket isn't sealing. My father-in-law says it's the clips on the meter. "All you have to do is bend them down gently with a hammer so it pulls the cap down farther." AHHHH!

:
: I have two questions:

: 1. Is this green foam normal, but just usually inside the radiator, Or do I have oil (from the engine) or grease (from the water pump) getting into the water?

: 2. Do I need to replace that cork sealer, not just the red ring, or should I do like he said (horrors) and bend the clips down to make it fit tighter? I really have reservations about doing that. I hear these are expensive, and hard to find accessories.

: Thanks in advnace for the help and patience.
: J.R.

Hi J.R.

The Motometer does have two gaskets. One between the cap and the radiator. This one is now neoprene and should stay put if you lock the cap. The other is a red fiber washer that belongs in the ring between the upper (flips up) and lower portion (stays) of the cap. The red washer sits in the lower part but does have a habit of jumping out. We have replacements for $1. 1 888 813 FORD

The foaming problem seems to be in full bloom this year. Is your anti freeze new? I wonder if the formula has been changed by the manufacturer. I think I'll call them.

Your gas leak problem is one that you should get right on.
Since you can't shut the gravity feed fuel pump off, the system must work properly. Yes the gas valve should work so get that taken care of but the carb should not leak as much as yours. The Model A carb is really very simple to remove. I would take it off (two bolts, a fuel line and two snap off controls) and check the float adjustment. Look the float valve over and if it is not looking real good it is best to change it. With the gravity system, these little devils are critical. The level of the float when it closes the valve can be adjusted with washers as opposed to bending things. Get that right and pull out the screen clean and relace it and clean the upper half of the carb. Then working with the lower half only, put the bolt that holds the carb together back into the bottom and lock the bolt head in a vise. Now you have the open lower half in the vise, pour fuel into the float chamber up to 5/8 inch from the top. Now stare at it. In this condition, it must not leak at all. Jets are made of two pieces and sometimes come apart etc. anyway, you should have no movement of fuel. Now everything is clean and adjusted and should not leak except a little bit if you leave the valve open for days.
The float in a Zenith is pretty big and puts enough pressure on a good valve to stop the gas.
Well that is my 2 1/2 cents worth.
Ray C




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