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Old 06-15-2009, 06:14 AM   #1 (permalink)
Piwoslaw
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Join Date: Oct 2008
Location: Warsaw, Poland
Posts: 3,541

Svietlana II - '13 Peugeot 308SW e-HDI 6sp
90 day: 58.1 mpg (US)
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Vacuum pump basics

There is some talk here and there about vacuum pumps, gauges, lines, etc., but it's all in bits and pieces. I'd like to have as much info as possible in one place. Not only for myself, but for anyone who knows as much as I do, or even less. I know the answers to some of the questions below, but I state them anyway.
I'd like to know:
  • What the vacuum in an engine is for,
  • Is it the same for gas and for diesel,
  • How strong should it be,
  • What kind of pump is better - belt driven or electric,
  • What does a vacuum gauge measure and how does this help me,
  • What (and how) should be tweaked/changed for better engine operation,
  • Will this help FE and why...

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Piwoslaw's Peugeot 307sw modding thread

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