Page 3 of 3 FirstFirst 123
Results 21 to 26 of 26
  1. #21
    Quote Originally Posted by DanSVHO View Post
    Just did a compression test on a cold engine and got- 130,125,128,135 is this acceptable? Would they read higher if engine is warm?
    yes hey would b higher ur with in %5 ur good do a leak down if u can.

  2. #22
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    886
    +1
    87
    Quote Originally Posted by yellow jacket View Post
    yes hey would b higher ur with in %5 ur good do a leak down if u can.
    I don’t have a leak down tester unfortunately.

  3. #23
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    41,791
    +1
    2,089

    Yamaha GP1800 Fuel tank vent assembly, ventilation parts

    Quote Originally Posted by K447 View Post
    There is a fuel tank vent fitting on the upper part of the hull, but hidden from view under the black plastic upper shroud/cowl.

    On 2017 GP1800 the fuel tank vent itself is well hidden...
    Quote Originally Posted by DanSVHO View Post
    this is on right side [2019 FX SVHO)].

    There are vent lines going to it.
    The top nipples doesnít have a tube on it.

    ... Also, the bottom nipple just spins as if itís broken. Is this normal?
    .
    this one under the seat is full of fuel.
    I am adding this info for completeness, should someone else need to learn about this later.
    Photos are from a 2017 GP1800 that had the upper body panels removed.

    Socket, Ventilation GP7-62159-02-00

    This breather device sits on top of the body colored deck, right behind the hood opening. It is hidden from view by the black upper cowling and the housing for the dash instrument cluster. If you remove the glovebox and seat you might be able to glimpse it far forward, high up and slightly to the right of the steering column.




    Mounted far forward on the upper deck just to the right of center, high above the fuel tank the underside of the ventilation socket mounting is visible. Two rivets hold it to the hull and the Ďventilation pipeí extends from below the deck to above the top of the ventilation box above.



    Pipe, Ventilation F1G-62149-00-00

    Vent pipe has a hose nipple fitting on the end and two small holes in the sides, about 1/2 way up inside the vent box. there is no hole on the upper end of the vent pipe, and the end sticks up just above the top of the vent box.

    Air would flow into the two small holes and then down the vent pipe towards the fuel tank. Or vent upwards from the fuel tank, depending on whether the check valve was relieving excessive air pressure inside the fuel tank or allowing air in to prevent a vacuum as fuel is drawn out to feed the engine.



    Note that those two tiny holes are the entire (my understanding) sources of fresh air into the fuel tank as fuel is pumped out.

    The white plastic Ďvent pipeí just slides into the vent box from below with a snap detent to hold in place.



    Filter, Vent Assy F2F-6214A-00-00



    The vent assembly is mounted just forward of the seat opening, above the engine. Normally it contains only air. Check it every so often. If there is any liquid in there, something might be wrong with the tank venting. Or perhaps the hull was inverted in the water previously.

    If somehow fuel or water was found inside the small vent tank, unscrew the plastic plug on the bottom. There is a groove in the threads to allow the liquid to dribble out before the plug is fully unscrewed.

    Use a shop rag or container to catch the drained liquid. Do not allow fuel to drip into the hull.




    Check Valve EU0-67767-31-00

    The check valve is found directly above the fuel pump and is attached to the fuel tank vent fitting with a very short (maybe 2 inch?) hose. The other end of the check valve connects to the vent tank assembly.

    Fromt he vent tank there is a rather long vent hose that eventually runs up to the vent pipe fitting above.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	4041848B-B674-4BCB-BA1C-535ECF7C26A4.jpg 
Views:	82 
Size:	69.5 KB 
ID:	459564   Click image for larger version. 

Name:	729CB238-EA00-42F4-BB5D-C97E01956407.jpg 
Views:	83 
Size:	70.3 KB 
ID:	459565   Click image for larger version. 

Name:	2A990706-EC21-42FE-8707-AD1A05A07BDD.jpg 
Views:	86 
Size:	114.7 KB 
ID:	459566   Click image for larger version. 

Name:	B7A7EB55-CD04-43F4-B2A2-E88EAF333828.jpg 
Views:	83 
Size:	16.0 KB 
ID:	459567   Click image for larger version. 

Name:	6E156701-23B6-47E8-8C90-A21D5D04121A.jpg 
Views:	81 
Size:	25.3 KB 
ID:	459568   Click image for larger version. 

Name:	9096D2B2-8E4C-49CA-B861-69E7A2F9AF20.jpg 
Views:	155 
Size:	21.1 KB 
ID:	459569  

    Click image for larger version. 

Name:	D247F55E-6F76-414B-A244-E84AD2EE2284.jpg 
Views:	77 
Size:	27.8 KB 
ID:	459570   Click image for larger version. 

Name:	15C9C90B-FB72-4353-8AE1-EDF717836850.jpg 
Views:	80 
Size:	22.5 KB 
ID:	459571  

  4. #24
    Click avatar for tech links/info K447's Avatar
    Join Date
    Jul 2007
    Location
    near Toronto, Canada
    Posts
    41,791
    +1
    2,089
    The ventilation socket box itself has two small vent holes. One in the top surface and one near the bottom edge, both on the Ďtallí end of the box.

    So the vent pipe breathes into the box and the box breathes to the atmosphere.

  5. #25
    DanSVHO's Avatar
    Join Date
    Jul 2015
    Location
    Delray Beach, FL
    Posts
    886
    +1
    87
    Thank you for adding that!

  6. #26
    mittens's Avatar
    Join Date
    Mar 2018
    Location
    Huntsville, AL
    Posts
    615
    +1
    60
    It's the check valve in the vent clog... and sucked my 09 fzr tank so far into its self it cracked it.


Page 3 of 3 FirstFirst 123

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Question about deans team speed limit control tune
    By Joetib07 in forum Yamaha PWC Performance (4-stroke)
    Replies: 5
    Last Post: 03-09-2019, 12:00 PM
  2. SOLD 2014 FX SVHO - Deans Team with lots of extra mods
    By swlamarshrunner in forum Yamaha 4 Stroke Skis
    Replies: 2
    Last Post: 01-19-2018, 05:32 PM
  3. Reliable hours with Deans team tune?
    By TwzteD in forum Yamaha PWC Performance (4-stroke)
    Replies: 48
    Last Post: 10-31-2017, 02:36 AM
  4. SOLD FX svho deans team modded intake grate
    By seadoo02xp in forum Yamaha Classifieds
    Replies: 1
    Last Post: 10-21-2017, 11:13 AM
  5. WTB WTB fz SVHO r3 or deans team reflash
    By TuningForkMarine in forum Yamaha Classifieds
    Replies: 5
    Last Post: 03-16-2016, 11:55 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •