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    Drive held pressure but still leaks out , water in

    Yes oil was milky but not as bad as when I dropped it before I changed seals Did soap spray , no bubbles top & bottom
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    Drive held pressure but still leaks out , water in

    What do you mean by not doing me any favors ? Thermal Expansion Never indicated, it was 20 or so minutes over two days, Just a moment ago I pumped 12 PSI into vent whole Holding , Understand most water intrusion is the prop shaft , I changed all 3 oil seals & screws with washers, If any of...
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    Drive held pressure but still leaks out , water in

    2000 OX 66 2 stroke 250 Hp SX 250 TXRY Had water in drive Purchased OEM Yamaha prop shaft seals , top seal , shift shaft seal Never considered doing a pressure test too determine which seal is bad , jut changed them all New screws and gaskets vent & drain Pumped 12 PSI , did soapy water test...
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    self leveling or motorized trim tabs

    22 ft grady white , seaferer 250 yamaha boat never had any trim tabs when i open up leans too starboard leaning towards self leveling , your thoughts self or motor leveling , what size plate ?
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    2 flat & wavy washers along with plastic washer not under impeller cover ?

    2000 OX 66 250 hp SX250TXRY shifting was ok prior too oil seals upyper & lower, plus shift selector seals , impeller , gear lube , OBs was new too me coming from IOs According to diagram 2 washers and 1 wavy washer along with plastic ring go under metal cover There was none on my shaft ...
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    Gears grinding after re- install drive

    2000 ox 66 2 stroke 250 hp pulled drive too change impeller top seals , bottom seals shift seal gear oil change ( water intrusion ) throttle in N did not move shifter while changing seal , shifter not easy too move without vice grips Installed drive gears grinding , forward slight grind...
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    oil injection fittings , tip broke

    thank you , ordered ,
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    oil injection fittings , tip broke

    FOLLOW up - REMOVED , WAS METAL , PRESSED INTO BLOCK , MADE A DIY HAMMER PULLER AND IT CAME OUT . NOW I HAVE TOO TRY TOO FIND THESE OLD PARTS
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    oil injection fittings , tip broke

    2000 TXRY yamaha OX 66 2 stroke ( obviously ) 250 hp oil injection hose on starboard side had crack leaking oil I should have known better but when I put a little force too remove and replace the tip of of fitting broke off into hose Of coarse location is very bottom bit tight but i can...
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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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    Yamaha ignition coils

    Proper testing equipment , TOOLS OF THE TRADE , do this for a living buy the best , Weekenders use once pay hundreds never using again , or can't find it if you need it , hire the guy , if you can find one , ( sometimes educated guess on part needed ) cheaper then hiring the guy ...
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    Yamaha ignition coils

    Boaters helping boaters . That's the beauty of this forum , Unless you ask questions one will never learn , OB new for me ( downsizing ) Having twin IOs learning as I go Correcting no spark on 3 cylinders starboard side , I wanted too check coils . not eager too replace if not...
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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

    FOLLOW UP - FOUND IT - engine running on 3 cylinders . My first thoughts was water , but entire bank starboard had no spark, Checked every harness connection , opened every ground , wire brushed, dielectic grease, stator ? magnetic pick up ? thought I had computer but find out its...
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    Yamaha ignition coils

    never mentioned coils going bad after a week , Coils are 23 years old , was asking if the ones I see aftermarket can be used , Advertised they say perfect replacement for the yamaha OX 66 up too 225 hp , I have the 250 .HP . Majority of the coils I see on line max indicated 225 hp , A...
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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

    Engine was running OK , still learning about this older OB going from IOs . Weeks ago ran good , week later ran like crap , stalling , would not idle without stalling , opening up it seemed like it was running on 4 cylinders , Got boat home , water separator had water in plastic bowl , How it...
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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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