Never seen this before

Tom in Mo. · Mar 20, 2023

Found this today while tinkering on the 172/4000. A previous owner drilled three 1/4 inch holes in the bottom of the intake tube. The edges are dull so it's been that way a while. I'm guessing to drain the excess gas. This would certainly compromise the integrity of the intake air filtering.

used red MN · Mar 20, 2023

Some guys have there wits about them and some DO
NOT! Wonder if he ever considered tying a

rag around it to cover them? Or even the fact that one
small hole would be adequate unless the float needle
was just dumping a torrent of gas.

Bern · Mar 21, 2023

If you operate in a dusty area, I'm going to go out on a limb and suspect that you have some low
compression.

Kirk-NJ · Mar 21, 2023

Seen it before and yes not good in dusty areas

MarkB_MI · Mar 21, 2023

The sintered bronze plug in the bottom of the carb is probably plugged. I recently bought a replacement from <a href=https://robertscarbrepair.com/>Roberts Carburetor</a>. It was not cheap, and they were out of stock for a long time before I was able to get one.

Fixingfarmer · Mar 21, 2023

Thats a new one to me! It would almost be excusable if
something was attached to it for some unfathomable reason.
Poor mans starting fluid port

RobCons · Mar 21, 2023

Put a whistle in there and well you know. Whistle as you work.

Never seen this before

Tom in Mo.

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used red MN

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Bern

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Kirk-NJ

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MarkB_MI

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Fixingfarmer

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RobCons

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