1999 Yamaha 60hp

Discussion in 'Outboard Maintenance' started by restlesswoodie, Jun 20, 2013.

  1. Jun 20, 2013 #1
    restlesswoodie

    restlesswoodie I Love microskiff.com!

    45
    0
    331
    My '99 Yamaha 60hp outboard is acting up, I have had this problem for a while now. The motor runs great and idles fine but it seems like the problem is in wide open throttle. When the motor is full throttle it bogs down and will not get on plane until I let the motor rest for a minute, 3/4 throttle it seems to have no issues. Carb issue?
     
    restlesswoodie, Jun 20, 2013
    restlesswoodie, Jun 20, 2013
  3. Jun 20, 2013 #2
    restlesswoodie

    restlesswoodie I Love microskiff.com!

    45
    0
    331
    It is a 2 stroke
     
    restlesswoodie, Jun 20, 2013
    restlesswoodie, Jun 20, 2013

  5. Jun 20, 2013 #3
    swaddict

    swaddict Thread Killer

    693
    43
    403
    probably a fuel pump or primer bulb issue, remove 2 bolts on fuel pump. leave hoses connected and squeeze bulb, if fuel comes out the side of the pump (facing motor), then replace.  If that's good and still having issues, then you probably have a bad primer bulb and or fitting to motor (use OEM parts).  Hopefully that will solve your problem, the yammy techs on this forum will chime in with a more accurate solution.
     
    swaddict, Jun 20, 2013
    swaddict, Jun 20, 2013
  6. Jun 20, 2013 #4
    Dillusion

    Dillusion devilray snob

    2,340
    5
    893
    Sounds like it's starving for fuel and not getting it fast enough.

    -blocked carb jet (high speed jet?)
    -bad fuel pump/primer bulb

    Have you cleaned the carbs recently? Is your primer bulb always tight?
     
    Dillusion, Jun 20, 2013
    Dillusion, Jun 20, 2013
  7. Jun 20, 2013 #5
    cutrunner

    cutrunner Cert. Yamaha technician

    4,331
    5
    1,891
    What he said
     
    cutrunner, Jun 20, 2013
    cutrunner, Jun 20, 2013
  8. Jun 21, 2013 #6
    restlesswoodie

    restlesswoodie I Love microskiff.com!

    45
    0
    331
    I have already replaced the fuel pump on the motor, I have not replaced the primer bulb yet. The one thing I have noticed is the tank seems to be starving for air, as the tank loses gas it basically sucks in the sides, air vent seems to be clear of debris, should I replace the air vent hose anyways?
     
    restlesswoodie, Jun 21, 2013
    restlesswoodie, Jun 21, 2013
  9. Jun 21, 2013 #7
    cutrunner

    cutrunner Cert. Yamaha technician

    4,331
    5
    1,891
    Thatll do it.
    Run it with the cap off for a while (dont get water in it)
    And see what it does
     
    cutrunner, Jun 21, 2013
    cutrunner, Jun 21, 2013
Loading...
Similar Threads Forum Date
1999 Pathfinder 15T /2007 Yamaha 25hp / 2014 Trailer $7200 Microskiffs For Sale Sunday at 10:27 PM
1999 25hp yamaha 2 stroke tiller Boating, Fishing and Marine Products for Sale Jun 19, 2017
SOLD/EXPIRED 90 hp Yamaha 2 stroke 1999 for sale Sold/Expired Classifieds Dec 11, 2015
SOLD/EXPIRED 1999 Yamaha 90hp 2-stroke Sold/Expired Classifieds Jul 28, 2015
SOLD/EXPIRED FS 1999 Yamaha 30hp 2stroke 3cyl. Sold/Expired Classifieds Mar 25, 2015