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Old 23-06-2020, 09:41   #1
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vacuums gage

i have a yanmar 4jh4ae where should i put put vacuum gage
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Old 23-06-2020, 09:43   #2
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Re: vacuums gage

After the primary fuel filter for checking the health of your primary fuel filter.
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Old 23-06-2020, 11:34   #3
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Re: vacuums gage

I have a raycore and a filter on engine
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Old 23-06-2020, 11:43   #4
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Re: vacuums gage

Gauge goes after the primary filter and before the lift pump. As the filter fills up, the vacuum rises. Actual numbers are different in most installations. Mine reads zero with a new 2 micron filter and I change the filter at 7"hg.
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Old 23-06-2020, 15:31   #5
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Re: vacuums gage

If you haven't already, get one with a "drag pointer." This allows you to read the max vacuum without the engine running.
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Old 24-06-2020, 06:03   #6
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Re: vacuums gage

thanks for the comments i will see where i have room
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