Should the clear fuel filter be filled with gas??

Discussion in 'Lawn Mowing' started by KenH, Jul 10, 2002.

  1. KenH

    KenH LawnSite Bronze Member
    from CT
    Messages: 1,622

    I have a Kohler 22. Should the inline fuel filter be filled with gas?? The engine runs fine, but the filter is always empty. I couldnt remember if it was always like this.
  2. Scraper

    Scraper LawnSite Bronze Member
    Messages: 1,656

    I just replaced the one on my 17 Kawi. It was half full prior to changing and then empty when I replaced with new filter. Three weeks later and there is visible gas in it. You are okay as long as gas is flowing through.
  3. You ok as long as fuel is being sucked through the system, but you should see fuel in the filter at some point.

    It may take a few days to fill up and if it doesn't it can cause fuel starvation problems soon.
  4. Jimbo

    Jimbo LawnSite Bronze Member
    Messages: 1,093

    Those filters are funny sometimes (especially when just replaced). Most of the time they should be half full, but mine has appeared empty before and ran fine.
    I would remove the hose at the carb and make sure gas runs freely.

  5. Pelican

    Pelican LawnSite Member
    Messages: 164

    My fuel filter is full on some days and empty on others, the engine runs the same in either case. I wonder if it has something to do with barometric pressure?
  6. TLS

    TLS LawnSite Fanatic
    Messages: 7,943


    But from here I can see that you all have loose exhaust bearings. Thats the real reason!!! :eek:
  7. Thomas I noticed you are low on blinker fluid, while you fill that up better check the license plate fluid also.;)
  8. awm

    awm LawnSite Gold Member
    Messages: 3,354

    be danged ,an i thought i had a good maintenance program. hmm ,something else to add to the list.;)
  9. Tony Harrell

    Tony Harrell LawnSite Senior Member
    Messages: 739

    Is it installed right side up? It would probably flow either way but, there is a right side up. Also, is your petcock turned all the way open?
  10. roscioli

    roscioli LawnSite Senior Member
    Messages: 749

    I hate to be the only one to point out the extreme obvious, but here goes:
    A clean filter will flow better, therefore a new filter will be empty becuase its clean and the gas is just pouring through it.
    A dirty filter will be forcing the suction of the engine to pull gas down, therefore the dirty filter will be full because there is friction holding the gas in.

    Of course I know there are more reasons, like complete randomness as one, but this is the most obvious. Either way, as long as its running fine, and when you disconnect it at the carb the fuel is running through fine, and you have it on the right direction, you are fine. Fine fine fine.

    Call me Captain Obvious :)

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