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Old 06-15-2009, 06:14 AM   #1 (permalink)
aero guerrilla
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Join Date: Oct 2008
Location: Warsaw, Poland
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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...

e·co·mod·ding: the art of turning vehicles into what they should be

What matters is where you're going, not how fast.

"... we humans tend to screw up everything that's good enough as it is...or everything that we're attracted to, we love to go and defile it." - Chris Cornell

Piwoslaw's Peugeot 307sw modding thread

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