100 hr service gone wrong

Discussion in 'Boating Discussion' started by fly liner, May 20, 2018.

  1. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
    Boat:
    18.5 wahoo/21' crystaliner /15' prowler
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    So I just had a 200hr service done. I drop the boat in the water and immediately after I start it I can hear something is wrong. It is making almost a deep whining sound almost thinking the belt tension pulley. I pull it out hook up to the hose so I can look around better starts peeing at a normal pressure. I shut it off so i can remove the flywheel cover. Restart and it wont pressurize again. I tool around scratching my head for a bit. And decide to drop it back in the water to see if the noise stops if I cycle through gears. Drop it in, it pees immediately, I shift in to reverse and the noise stops, and it sounds normal, neutral noisy, forward no noise, neutral noisy Fuck it shop opens at 8, back to hemet I go. At the shop mechanic is going through everything,listening with the stethoscope can't find anything. He drops the lower unit to inspect the water pump. The upper pump housing comes off and above the metal cup, inside the housing, the housing has started to get get chewed up, from what, we don't know. Also a notch has started to get worn around the drive shaft rite at the top of the upper pump housing. Mechanic replaced the upper housing reassembled the pump and installed the lower still no results. The mechanic and owner of the shop say go run it, you are under warranty, we need to know if anything changes under load. To skinner I go nothing changed. Forward is perfectly fine reverse is perfectly fine neutral is CONCERNING.
    Any thoughts?
    Boat goes back to the shop on monday so they can figure out what in the hell is going on. As of saturday they had no idea off hand what could be making the noise.

    Soooo frustrating, I only have 237 hours on my engine. I spent $13,700 on a repower and $640 on annual /100hr services to avoid situations like this.
    I played the used motor blues for way too long. And frankly it just sucks.
     
    Last edited: May 20, 2018
  2. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
    Boat:
    18.5 wahoo/21' crystaliner /15' prowler
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    This is where the notch/groove is being worn. (not my driveshaft)

    IMG_20180520_175132.jpg
     
  3. gearshifter

    gearshifter Well-Known "Member"

    Location:
    San Diego
    Name:
    Andy
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    22 Davis Cortez
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    What kind of engine?
     
  4. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
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    18.5 wahoo/21' crystaliner /15' prowler
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    2017 yamaha 115 4stroke
     
  5. Hangfire

    Hangfire Member

    Location:
    92107
    Name:
    GW
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    Glastron Seafury
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    Did they remember to add oil? That sounds like something in the lower unit is not happy.
     
  6. Hangfire

    Hangfire Member

    Location:
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    GW
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    Not that this will solve your issue, but an excellent overview/cutaway of a lower unit and what's going on inside and how it works.
     
    colemans224 and farhangs like this.
  7. gearshifter

    gearshifter Well-Known "Member"

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    San Diego
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    Andy
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    Check your gear oil to check for any shaving.
     
    fly liner and strackle99 like this.
  8. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
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    18.5 wahoo/21' crystaliner /15' prowler
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    Thats a cool video. Thanks
     
  9. gearshifter

    gearshifter Well-Known "Member"

    Location:
    San Diego
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    Andy
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    Make sure the prop can spin freely.
     
  10. newmar

    newmar Newbie

    Location:
    spring valley
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    bruce
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    The water pump hsg has a stainless steel cup inserted. that cup can be oriented incorrectly - the hole is off center. That will wear the DS in the area you point out and cause other issues.
     
    Bottom Line likes this.
  11. ShadBurke

    ShadBurke I've posted enough I should edit this section

    Location:
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    Shad Burke
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    22' Whaler Guardian
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    Has Gonzolo at West Coast Marine looked at the motor? Might make some sense if warranty is involved since he is certified yamaha 5 star master mechanic. 949.515.2822 ext. 2.
     
    Second Row, EL COMA and aguachico like this.
  12. el Toro

    el Toro I've posted enough I should edit this section

    Location:
    Point Loma
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    Nate
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    Artemis
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    This. Had same thing happen after water pump service myself. There is a ring/washer at the top of the plastic water pump housing. If the lower unit is not re-installed just right and mis-aligned, that ring will rub the drive shaft. Looks like you caught it before any real damage was done. But I'd ream those fools. They obviously didn't test run before signing off on it.
     
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  13. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
    Boat:
    18.5 wahoo/21' crystaliner /15' prowler
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    There is actually 3 thing metal washers on mine(I watched the mechanic disassemble the pump) that is something i pointed out to him
     
  14. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
    Boat:
    18.5 wahoo/21' crystaliner /15' prowler
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    Only the shop I was at has looked at it. As this just happened on Saturday. I was supposed to bring it back today but i didn't get off work in time. Funny thing is the mechanic literally just returned from back east getting yamaha certified.
     
  15. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
    Boat:
    18.5 wahoo/21' crystaliner /15' prowler
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    You are correct. But the cup has tabs on top of it to insure that it is aligned correctly. That being said I cannot or will not rule out a misalignment being a possibility

    You can see the splines inside of the raised portion of the upper housing. The bottom of those splines had wear on them. From I would estimate less than 10 minutes of run time.

    IMG_20180521_181433.jpg
     
  16. el Toro

    el Toro I've posted enough I should edit this section

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    Point Loma
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    Nate
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    The actual problem is a simple mistake that any mechanic could have made. The lack of double checking their work is the part that’s inexcusable, IMO. They need to make it right. ASAP.
     
    fly liner likes this.
  17. aguachico

    aguachico I've posted enough I should edit this section

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    Mariano Matamoros Tijuana
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    Art
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    Yamaha's are easy to service until they break. Certified mechanic is the way to go.
     
    fly liner likes this.
  18. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
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    18.5 wahoo/21' crystaliner /15' prowler
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    I am completely capable of doing the service myself. I only take it to the shop because its under warranty. And I want everything service related documented. Up until the warranty expires
     
    One_Leg and Unassailable like this.
  19. meddo63

    meddo63 Newbie

    Location:
    ramona
    Name:
    mark
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    23' Sun Bird
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    Check the bushing right above the water pump. The drive shaft goes thru it, its part of your exhaust housing. Yamahas are famous for that bushing being dry and causing your noisy problem. Drop the lower unit and grese it really good.
     
  20. fly liner

    fly liner I've posted enough I should edit this section

    Location:
    hemet ca USA
    Name:
    Josh
    Boat:
    18.5 wahoo/21' crystaliner /15' prowler
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    Would it only make noise in neutral?
     

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