Author Topic: pressure testing the bottom plugs for leaks  (Read 304 times)

Offline DaDuck

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pressure testing the bottom plugs for leaks
« on: February 04, 2021, 07:50:22 PM »
I just received Cliff's Quadrajet book and I am evaluating my 17057274 carb so I can put together a list of parts.  On Page 71 ---"The most reliable test for leaking bottom plugs: Apply a soap-and-water mixture over the plugs, then introduce high-pressure compressed air through the front and rear jet openings in the fuel bowl.

How much pressure for this test?????

Offline Cliff Ruggles

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Re: pressure testing the bottom plugs for leaks
« Reply #1 on: February 24, 2021, 03:11:47 AM »
Getting a good seal on the jet holes is more important than the pressure used to do the test.

I'd like to see at least 60psi and a well fitting air nozzle.

Keep in mind that most of the later carburetors like the one you are testing do NOT leak as they used swaged in aluminum plugs, but I still recommend testing all castings to make sure....

Offline DaDuck

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Re: pressure testing the bottom plugs for leaks
« Reply #2 on: March 08, 2021, 05:47:41 PM »
Thanks Cliff!!!!!