Gas vs Diesel

Asked by Aug 21, 2008 at 11:14 AM

Question type: General

why do gasoline engines create intake vacume
but diesels do not?

4 Answers
155

answered 9 years ago

I must not understand your question. Diesel motors do create a low pressure zone in the intake, that is how the air gets into a NA diesels. This low pressure zone just isn't as strong in a diesel because there is no choke on the intake (from a butterfly valve or a restrictor plate)

Mark helpful

answered 9 years ago

exactaly

Mark helpful
155

answered 9 years ago

So... you are wondering why they don't have that restriction? Intake restriction causes the engine to be less efficient. Also all big rig diesels are required to have air brakes. This uses compressed air instead of vacuum assisted brake booster like small cars. The reason they use these brake styles in large trucks is so if there is a problem with the system the brakes come on, not going out.

Mark helpful

answered 9 years ago

thanks champ

Mark helpful

Your Answer

Related Questions

  • Gas vs Diesel 4 answers

    why do gasoline engines create intake vacume but diesels do not?

    General

  • Diesel or Gas? 38 answers

    im looking to buy a Chevy 2500HD, i will be using it for work over the summer, landscaping and hauling and towing, and putting a plow on for the winter next year, and im stuck on whether or not to b...

    Chevrolet Silverado 2500HD

    -

    General

  • Diesel or Gas? 2 answers

    Does it make economic sense to choose a diesel engine over gasoline? Subaru does make a diesel engine for Asia and it may come to the USA in the future? After all, the Mercedes Benz Sprinter dies...

    2016 Subaru Outback 2.5i Limited

    -

    General

  • Tailgates vs. Nets for Gas Mileage... 1 answer

    The tailgates are a popular and easily stolen item. I'm on my 2nd now. Found a 2002 Tailgate on craigslistcom for my "06 Ranger- painted to match for $100. There's always been a debate about gas milea...

    Ford Ranger

    -

    General

  • Is there any significant difference between synthetic oil for diesel engines vs. gas? 11 answers

    What are the key differences?? Quality of oil? Detergents???

    2011 Mercedes-Benz Sprinter 2500 170 WB Extended Passenger Van

    -

    General

Shortcuts

Search General Questions

General Experts

  • #1
    Tom Demyan
    Reputation
    50,500
  • #2
    COMETGUY61
    Reputation
    40,260
  • #3
    F_O_R
    Reputation
    17,290
View All

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.