Recent content by oldseaox

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    5.7 overheats over 3500 rpm

    My 2453 Bayliner has a 5.7 replacement engine, last year. With approx 65hrs on new eng it has 2 venturi carb. alpha 1 gen2 leg. when rpm is sustained over 3500 it heats to over 185 and alarms, this started at about 50hrs. Normal is about 145 to160. Seawater impeller was replaced but changed...
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    What degree thermostat for 5.7 mercruiser?

    I have a I/O Alpha with a 5.7 Jasper replacement engine, raw water cooled. The boat is used exclusively in salt water in Florida. I have been advised to change the thermostat because the boat came from fresh water in NC. The problem is deciding what degree thermostat to use for salt water. I...
  3. O

    "97 Merc 200 hp 2 stroke stuck in neutral

    Put the boat in the water and engine started and runs fine but will not go in gear. Pulled cable lose from engine and cable works ok,problem seems to be leg. Is there any way to free up with out pulling foot. oil ok.
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    Alpha one position indicators

    Since I cannot see the position of my I/O a position indicator would be a great help. Both up and down and side to side. Anyone know a reasonable source of a Kit or Kits?
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    merc 5.7 idles ok dies when throttle opens

    Carb eng. will idle but dies when throttle is opened, 1997 eng just replaced with Jasper rebuild. 2brl carb, all fluids and pressures ok. Have 5 hrs on eng. Suggestions???
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    Mercrusier 5.7 carb rebuild

    Anything special I need to knowconcerning rebuilding a 2 barrel carb on my 5.7 merc, been years since I did a carb on a V8 anything?
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    Water in cyl #1

    200 Merc, salt water eng. Started running rough at low rpm, will not reach normal wot. Pulled plugs and found traces of water in #1 and #3 cyls. Compresson test shows #1 65lbs and #3 105lbs, all others 105 to 110. Eng is approx 20 yrs old but has run well until now. I am holding off any action...
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    Timeing issue with V-6 Merc

    Engine is V-6 2.5 liter with carbs. Issue is trigger link. Maintanence area of my book shows 11/16 between face of lock-nut and forward edge of link arm. Ignition area shows 11/16 between face of lock-nut and center line of link arm at bend. This is a difference of approximately 3/32, which is...
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    Merc 2.4 V6 lost wot power

    Engine is mixed years, ran great on Monday and lost 1000 rpm Tuesday from start up. Mechanic found nothing definite, small blip with stator. Since then have tried Stator, Flywheel, Trigger, Fuel pump, Carbs, Switch boxes, reeds. Mech has not charged for trying parts and still has found nothing...
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    converting a GPS

    Does anyone have any information about using a "street use or automotive" type GPS on the waterways. Putting aside the claims about water-resistant and shock absorbing design, can this be done? Is there a web-site about this? Or has anyone done it? "A manual is a terrible thing to waste"
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    Need prop advice due to gear change

    Have a Merc 150 (2 stroke) on a 200 (2 stroke) lower unit, works well EXCEPT cannot now run WOT as before. Should be able to run 5000-5500 rpm but get 4600 at best. 150 LU was 2,00-1 gear and 200 LU is 1.87-1. Boat normally is 3400-3600 lbs (20.5 ft wa) loaded. Current prop is 15,5x15 as came...
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    prop and gear change???????

    Merc with a 150 power head on a 200 lower unit. Lower unit has ratio 1.87-1 and 150 lower unit had 2.00-1. WOT should be 5000 to 5600 but is 4800. Boat is 20.5 ft and weight is approx 3400-3500 with normal load. Hull and eng are 2950 advertised weight, dry. Currently using a 15.25-15 alu prop...
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    Mariner Offshore 200 will not start warm

    My Mariner 200, carb engine, will not start after it warms up. It's not running hot and seems to be getting fuel, have been pointed to switch box's and/or stator. Am checking stator today, how do I check the switch boxes? Electrical parts are non returnable for the most part so I want to avoid...
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    will not start at running temp

    My 200 Mariner Seafarer,'95, starts and idols well when cold but will not start hot. It also is rough when given fuel to accelarate,runs well at wot. I have also found fuel colored liquid under the flywheel????? Ideas???
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