Flushing engines

Discussion in 'Boating Discussion' started by Dogman, Jun 12, 2007.

  1. stanky1

    stanky1 Member

    Location:
    Carlsbad
    Name:
    Squid Mark
    Boat:
    Scout 175 Sportfish
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    Pretty sure Salt Away is a mild acid similar to vinegar.

    Btw, throwing chlorine bleach on anything metal is a good way to promote rust/corrosion.
     
  2. whitecap72

    whitecap72 Member

    Location:
    rohnert park, ca, usa
    Name:
    austin
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    24' skipjack
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    I run my I/O with garden hose all the way up for a good 5 mins. After that I go and unscrew the hose, squirt in a fair amount of liquid Dawn dish soap, re connect,turn the water back on, and run the motor until I get soap suds coming out. Been doing this for a long time, and my cooling system stays really clean, and it seems that it prolongs the life of my impeller. I change it every 3 seasons, and it's not bad when I change it out. This technique seems to work.
     
  3. rjoe

    rjoe Newbie

    Location:
    elcajon ca. usa
    Name:
    Rod R
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    Pro Line 25 Walk
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    Merc. Optimax 250, fresh water for minimum 5 min. and then Saltaway for 5 min. I use the fitting on the motor with the motor not running.
     
  4. Axl

    Axl Newbie

    Location:
    Long Beach
    Name:
    Axl
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    25ft Skippy AQAD 41B PICADOR
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    I asked my neighbor, a chemist, about neutralizing salts with salt away and showed him the blue fluid. He said it is most likely Acetic acid (vinegar is 30% acetic acud) blue dye and some biodegradable detergents. He said dilute to 10% (1gal vinegar with 3gal water). A search of vinegar to neutralize road salt on east coast showed similar recipes.
    I'll try it every-other-flush and see what happens
     
  5. karlow

    karlow Twins 2017

    Location:
    Duarte/Covina
    Name:
    karl
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    20' skippy Topless /17' whaler Wet Ride (sold) /19' Outrage
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    Its not acetic acid, it would be pungent. Salt away has very little smell, right.
     
  6. Axl

    Axl Newbie

    Location:
    Long Beach
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    Axl
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    25ft Skippy AQAD 41B PICADOR
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    White Vinegar diluted 1/3 doesn't have much smell, along with a biodegradable detergent like simple green or purple power or ?? would cover up the odor, I would think.
     
  7. Northeastfshman

    Northeastfshman Moderator

    Location:
    San Clemente
    Name:
    Brett Weinberg
    Boat:
    Parker 2120SCDV
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    Yamaha manual says to use the flush valve, engine off. You are supposed to flush the engine with down first then while it's up as well. Never knew that till someone showed me.
     
  8. kevina

    kevina I've posted enough I should edit this section

    Location:
    redondo beach
    Name:
    kev
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    25' aqua sport
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  9. Fishingguy

    Fishingguy I've posted enough I should edit this section

    Location:
    Orange County
    Name:
    Billy
    Boat:
    Parker
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    wait… we are suppose to do it twice????

    I just put my engine down and use the flush valve….(trailer). Do i still need to do it while its up?
     
  10. benrd81

    benrd81 Member

    Location:
    Lompoc, ca
    Name:
    Ben
    Boat:
    2660 Sailfish WAC Reellife
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    Pressure should be constant, however flow will change depending on the size of the hose pipe fitting etc. Like everyone else said I run the hose at about 30 to 40% flow and I'm at street pressure 3/4 inch copper
     
  11. Northeastfshman

    Northeastfshman Moderator

    Location:
    San Clemente
    Name:
    Brett Weinberg
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    Parker 2120SCDV
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    The manual said to flush the engine down then raise it up and continue to flush.

    I'm sure just down is fine.

    Back in NY my boat was on a mooring...that meant driving the boat to the mooring after cleaning at the dock so you couldn't ever flush your engine. Never had an issue so I'm sure just down is fine to. I just starting doing what Yamaha said in the manual.
     
  12. 909MARIO

    909MARIO Well-Known "Member"

    Location:
    Rancho Cucamonga
    Name:
    Mario
    Boat:
    CABO 226 (Yamaha F250)
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    Never run the yamaha engine on the flush hose hookup. only flush with the engine off.
     

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