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Old 05-13-2024, 06:47 AM   #3
Terry,OH
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Join Date: May 2010
Posts: 5,184
Default Re: Flathead low intake vacuum

See chart below. Looks like a vacuum leak. Yes it will make the engine hard to start. If you are unable to get the car running you can't do a vacuum test. The test is to be done at idle with the engine warm.
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File Type: jpg vacuum readings.jpg (63.0 KB, 191 views)

Last edited by Terry,OH; 05-13-2024 at 08:16 AM.
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