Gas cap 30/31 VENTED ??

[jerrytocci]

How can I tell if my new cap is properly vented and how to fix it if it is not

[Patrick L.]

Is the engine running properly ?

A new cap should be vented correctly. But look at the underside, remove the gasket and look at the vent hole[s].

[jw hash]

unhook your gas line from your carburetor and put the end of line in a can, turn on the gas and see if it run free for a minute or so. if it slows down at all open the cap. if it is not vented good enough. you will see the difference in the flow.

[McMimmcs]

Is this a new to you cap or a brand new cap? Is it a reproduction cap?

[jerrytocci]

it's a re-pop and I suspect something . I can't blow air through the cap

[katy]

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Originally Posted by jerrytocci

it's a re-pop and I suspect something . I can't blow air through the cap

It sounds like you have a radiator cap.

[jerrytocci]

There is a small hole in the underside but I can't blow air through it . Do I run a drill through it ??

[Tom Endy]

Lay the cap on a flat surface bottom side up. Fill the outer rim with water and blow through the vent hole with a straw. Bubbles should appear in the outer rim. See attached article.

Tom Endy

[jerrytocci]

can't remove gasket

[jerrytocci]

thank you Tom

[Bob C]

Originally Posted by katy

It sounds like you have a radiator cap.

The radiator cap is smaller than the gas cap.