Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 4 of 4
  1. #1

    Default fuel line, vent hose

    is there a valve in the vent line that stops stuf from going into the gas tank. does air flow freely ? Here the thing when i was out the other day the boat ran good . but on the way in i could not get the prime bulb to stay hard. so it seemed as if i was out of gas . I took the acksess panle off and that air vent hose does not flow freely is there a fillter on the vent line?

  2. #2
    Lieutenant Commander WAVENBYE2's Avatar
    Join Date
    Apr 2007
    Location
    WESTERN KENTUCKY
    Posts
    1,633

    Default Re: fuel line, vent hose

    First of all Welcome to Iboats!! It really does help if you could give us more info on what kind of boat you have if any one can help you, different set ups for different boats.

    1991 Bayliner Capri 2050CX,4.3L V6,Mercarb 2bbl,Alpha 1
    (QUOTE): When our boat is happy, THEN we are Happy

  3. #3
    Commander bifflefan's Avatar
    Join Date
    May 2009
    Location
    Grand Rapids, Michigan
    Posts
    2,877

    Default Re: fuel line, vent hose

    Quote Originally Posted by pminns2600 View Post
    i could not get the prime bulb to stay hard. so it seemed as if i was out of gas .
    was i running poorly?

    also why would it be hard? the fuel is flowing through it, there is no pressure in that part of the line unless you are pumping it. the pressure is between the pump and the float (or needle and seat to be more accurate).
    2011 Triton 190 Escape SE 150 Mercury Pro XS

    I never learned much from winning, but always learn from failure.
    Semper Fi

  4. #4
    Supreme Mariner Frank Acampora's Avatar
    Join Date
    Jan 2007
    Location
    Southeastern Pa.
    Posts
    10,308

    Default Re: fuel line, vent hose

    generally, the vent line is 5/8 ID and there is a screen on the outside thru-hull fitting. If the screen corrodes, it can block the venting. Some people (environmentally friendly) Install an after market stop valve in the line to keep from spilling fuel out when the tank is filled. Occasionally the internal valve can stick.

    It is also possible that there is an internal screen on the tank pick-up. this may have varnished. So to check that you must unscrew the pick-up tube. If it is welded to the tank, there is no internal screen.

    It is also possible that you just have crud in the tank partially blocking the pick-up-- hope you have an access hole to check that.

Similar Threads

  1. Which clamps for fuel line hose?
    By TN-25 in forum Johnson & Evinrude Outboards
    Replies: 2
    Last Post: September 6th, 2008, 12:52 PM
  2. Older fuel line tank hose.
    By hammerhandle in forum Johnson & Evinrude Outboards
    Replies: 3
    Last Post: June 8th, 2008, 09:58 PM
  3. Fuel Tank Vent Hose
    By sramelyk in forum Mercury & Mariner Outboards
    Replies: 1
    Last Post: June 15th, 2006, 11:56 AM
  4. Fuel In Vent Line from Pump to Carb
    By bobafett in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 2
    Last Post: June 20th, 2005, 01:29 PM
  5. Fuel Vent Line Problems?
    By bryanredfish in forum Mercury & Mariner Outboards
    Replies: 11
    Last Post: March 15th, 2003, 05:14 PM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic