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    Starts then no start

    2000 ox 66 2 stroke 250 hp I had two issues same time , believe I corrected one , No spark starboard side all 3 cylinders , Found yellow wire into CDI crud and tips making no contact , New connection and now have spark OR A WEAK STATOR ( will explain ) Starting issue cold start ...
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    Water Separator , larger filter verses smaller filter

    Motor is a 2000 - 250 hp - 2 stroke - fuel injected SX -250 TXRY , Question regarding fuel - water separator 3232 Racor - presently installed on boat , larger filter with plastic base verses 3214 - smaller in size - clear base both 10 micron wanted too install 3214 - since there is a...
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    Low Pressure Pumps - Yamaha

    2000 OX 66 250 hp 2 stroke fuel injected fuel priming issue , Difficult cold starting , once started , can shut and start over & over sit 1/2 hr , difficult starting again , Ball gets hard then soft What I did find out , one of 3 low pressure pumps leaks from back , TESTING LOW...
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    Yamaha ignition coils

    OX 66 1999 2 stroke 250 Hp fuel injected compression all 6 cylinders 120 Dont know model # ran fine , week later ran like crap , symptoms - not able too idle , not able too throttle up stalling before I could get into gear , - backfiring , - running like i was on 3 cylinders...
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    interment spark no spark

    2000 yamaha OX 66 2 stroke 250 hp fuel injection no engine model number Interment spark issue starboard side on all 3 coils ????? Port side OK work , dont work , work , dont work HUH ? leaning too computer issue , Plan is go thru each connection , check all grounds, maybe a...
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    Explain how fuel system works OX 66

    Cranking will not start 2000 OX 66 2 stroke 250 hp fuel injected Getting spark on all 6 coils , ( tested with spark tool at night ) got it too fire up briefly - shut Back too start will not , , ONLY CRANKS -away Leaning towards fuel pump , will check wiring getting familiar...
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    COIL INFO

    yamaha ox 66 2002 2 stroke 250 HP dont know model number number on spark plug wire boot , TD -T -132 was testing spark off coil , with spark tester , ( another person turning key ) got a shock # 5 is plug wire with coil sold one unit ? boot unscrews , end going into coil...
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    Finding model # on my Yamaha

    Need a little help from you experienced Yamaha guys / gals Can not read stickers on engine bracket , there is two one on each side , engine is 2000 250 Hp 2 stroke fuel injected Understand there is metal stamped size of a quarter someplace on engine , Those of you that know...
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    Priming after fuel tank cleaning

    Early 2000's Yamaha OX 66 2 stroke 250 HP fuel injected don't know model # ( new too me ) no tags readable outside , inside i keep looking for a stamped tag ) constantly working on engine , nothing jumps out indicating , Ran good 2 weeks ago , last week splashed normally first...
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    Water in water seperator ? What too do next

    Early 2000's Yamaha OX 66 2 stroke 250 HP fuel injected Don't know model # recently picked GW 22 foot Seaferer , with Yamaha OB , working my way thru learning process week prior , ran fine week of monsoon rains here in FLa Normally starts first turn. this time stalled after...
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    Little help Re grey oil hoses ,

    early 2000's Yamaha OX 66 2 stroke 250 HP serial number not readable Engine is new too me , Bit of oil after each use bottom of cowling Noticed 3 hoses not connected One wire , port side - thin black off the oil storage container . Discovered it goes too one of the nipples off the...
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    OX 66 - oil vent hose hanging , Where does it go

    Working on unrelated issue noticed the small vent hose from the oil container is hanging loose . Connected too top plastic nipple of the oil cannister , . Possibly right in front of me , I just dont see where this hose connects too , On the plastic that covers carbs on the bottom is two...
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    How much water is too much in water seperator

    1/4 cup possibly little less of water came out of recor clear cup water seperator How much is too much ? yamaha ox 66 2 stroke 250 hp carb
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    Think water entered gas tank ?

    Yamaha OX 66 2 stroke 250 hp carb engine gas filter & external clear cannister new 2 hrs run time , splashed last week , ran fine , after adjusting air flow sensor Yesterday - splashed , stalled , started , stalled , over and over , would not idle , little more gas too stop...
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    Huge sunbrella canvas boat cover off of 30 footer will sell for ,?

    Sold boat , canvas is 20 years old , stored in dry storage , not used , sitting on shelf , clean Sunbrealla branded canvas material Dark blue , one piece no rips , clean, It was cut for my model but would work for express cruisers with arch around 28 ft covered BOW over ARCH...
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    Transom Saver Yamaha ,

    Some advice RE transom saver Recent purchase - 22 ft Grady - seaferer Engine - Yamaha OX66 2 stroke 250 Hp Previous owner used boat seldom and never more then a mile too boat ramp , He used the swing bracket Yamaha installed I see damage happening , not recommended too travel long...
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    OX 66 - 250 , -2 stroke has a small coating of oil bottom of engine housing after use ?

    GW Boat & motor is new too me , going from IOs Motor is 2002 Yamaha OX 66 - 2 stroke - 250 hp , fuel injected After use when I trim motor up for transit a once of oil slivers out , leaving a small puddle just under engine on deck , One / two wipes its gone No indication where oil can be...
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    Yamaha 2 stroke , shift cable adjustment ?

    2000 OX 66 HDMI 2 stroke 250 HP when we start going fine when we want too gain speed I push down on throttle , not responsive , moving throttle slowly , eventually it opens up when this happens it jolts passengers, I back it down too find sweet spot and it runs fine Happens...
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    Battery operated small room A/C units , WORK ?

    Down sized from a cruiser with a/c too a GW 22 ft walk around , cuddy cabin boat. Once I remove middle cushions , I can stand in cabin , without head hitting ceiling Two can sleep and stretch out with comforts for extended fishing trips , Aware a powerful fan on power inverter will keep...
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    OX 66 Yamaha , no fuel pumping into VST ???

    2001 OX 66 2 stroke 250 HP Last week changed WS filter & engine primary filter During week started daily letting it idle 5 minute each day,- water pumping thru strong. other day while Idling heard that starving for fuel sound , Engine DIED ?? HUH - why ? Removed WS filter checking...
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