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Engine Idle vac, and hesitation

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Old 10-16-2001, 03:40 PM
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Default Engine Idle vac, and hesitation
What's normal idle vac? ever since I installed my fuel pump it is in the 400-600s

when I push on the gas normal it hesitates kinda like tine bogging on engine why?
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Old 10-16-2001, 06:31 PM
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Default Re: Engine Idle vac, and hesitation (revhrdls)
On a cool warm day, my vac at idle is about 510mmHg and on a very hot day, it goes to 550mmHg.
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Old 10-16-2001, 07:34 PM
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Default Re: Engine Idle vac, and hesitation (revhrdls)
Play with your fuel pressure. Might have to back it down a little (for idle)
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Old 10-16-2001, 07:48 PM
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Default Re: Engine Idle vac, and hesitation (Incognito)
actually I don't have a regulator except for the FMU which is supposed to regulate right?
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Old 10-16-2001, 07:51 PM
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Default Re: Engine Idle vac, and hesitation (revhrdls)
around 500 is about normal for a healthy engine. It will go down with the A/C on a bit
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