Fuel filter

[Werner]

Hallo und guten Tag,

I had to renew the fuel lines today. While I am doing that, I noticed heavy pollution in the collecting canister. Therefore I sawn through the gas filter. It was very heavily polluted with rust particles although it was only 900 miles in operation.

This as an indication of a possible source of interference in classic cars that have stood still for a long time.

Conclusion: Large filter surface with micronik-paper and early frequent changes.

[katy]

You might try a filter with a clear outer shell:

[30 Closed Cab PU]

Originally Posted by katy

You might try a filter with a clear outer shell:

If using one of the above make sure it is an automotive filter. Do not use a cheap small engine filter - not enough flow. A friend had put in a small engine filter and wondered why his car started acting up - not getting enough gas at cruising speeds.


If you have a glass sediment bowl there is an aftermarket micro filter that goes into the bowl and replaces the screen.


Am not sure about the one shown above, but the micro filter traps the sediment on the inside of the filter, hard to tell when looking at the filter when it is in the bowl if it has filled up with crud. The in bowl micro filter in the picture was ordered from one of the Model A parts vendors, looked very expensive until I realized it said it was a set, and you actually get 2 filters for the price.

[Ruth]

I use the WIX 33039 or NAPA 3039 fuel filter. It looks similar (same) as the filter 30 Closed Cab PU suggests.

[Purdy Swoft]

I always use the stand up filter that fits into the cut off valve . This filter stands up in the bottom of the tank and is out of sight . I also prefer the original cast iron sediment bowl filter on the firewall .

[30 Closed Cab PU]

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I use both the the standup "pencil" filter on the intake to the fuel shutoff, and the sediment bowl micro filter. Had a couple of shutoffs go bad due to particles of rust/junk wrecking the innards of the fuel valves. Also last year got some bad gas, got into tank, fuel lines, and the carb. So after the experience of cleaning the entire fuel system, am paranoid and run the micro filter.

[Ernie Vitucci]

Good Morning: Another possibility that some of us use is a big magnet in the fuel bowl. It will grab anything metallic coming out of the gas tank and you can easily see how much junk is in the fuel bowl and then take it off and clean it out. I have a second filter from a 55 Thunderbird much the same with in and out fuel line fittings and it also has a magnet in the glass bowl. It requires changing about every other time the one on the firewall requires changing...Ernie in Arizona

[Werner]

Hello everyone, I have taken now a big filter from modern Opel. It has a volume of 4 ounces. Optically painted old. It fits in a lot of dirt. The micronic accordion filter paper also restrains dust particle size.


I threw a handful of brass nuts into the tank. They scratch old rust and cover off. After 5000 ml I throw the filter away and build in something inconspicuous again.

[CarlG]

Since nothing else in my engine compartment looks "normal" anyway, I went overboard and put one of these on my pickup. With this one, you can drain small amounts of fuel out of the bottom of the filter in order to see the condition of the fuel without having to break it open.

[Werner]

Hello, I have to correct my previous filter recommendation!

Due to the large black housing, the fuel filter heats up too much. This creates gas bubbles inside. As a result, the hot engine stops in idling when the car is holding few minutes. For restart the choke must be pulled.

So I have now a small plastic filter built in again. Like the one shown by Katy above.

I write this as an information to detect any errors.

[katy]

Werner, I think the slope of the filter in your picture (post #8) is wrong, I think the inlet should be higher than the outlet so that any bubbles will migrate away from the carburetor.

[Werner]

Good afternoon Katy, that's a good thought again! I had specially formed a S-bow so that no gas bubble in the filter can stay inside.

You recommend it is better a short lead diagonally down to the carburetor inlet? Like as on the painting?