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Type: Posts; User: phyrefighterjay

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  1. Rusty and battered fuel injector with pics

    Ot 737852. 150 optimax from 2002. All of the fuel injectors that came out of it were sqeaky kleen. What the hell happened to the one side of this one? It came from port side top. Previous owner used...
  2. What is the difference between fuel rail design for the 2.5L optimax

    My engine is ot737856
    the starboard rail needs replacement. The surface of the tracker valve is messed up.
    My current stbd rail is 859517-12 02171 042
    my neighbors rail that he is giving to me...
  3. Looking for fuel rails for my optimax ot737852, which used models will work?

    my opti is an ot737852
    My neighbor has a 99 2.5 L OptiMax (no serial) 20” shaft like mine. Will the fuel rails interchange? Are all 2.5 fuel rails created equal?
  4. Yes. His is a 2.5L…

    Yes. His is a 2.5L…
  5. It is! I wanted a project. So here we go.

    It is! I wanted a project. So here we go.
  6. And before i forget. Thanks don.

    And before i forget. Thanks don.
  7. Back to that optimax from 99 that is down the...

    Back to that optimax from 99 that is down the road from me. Are all of the fuel rails the same? Sorry i dont have a serial number for that engine. It wore off
  8. Hose connections are not pitted. Yes. The fuel...

    Hose connections are not pitted. Yes. The fuel regulator was a hack job. Hey, at least we found why it was running so badly! My $800 opti project might get out of this pretty cheap! Btw my compressor...
  9. Vst was very clean, so was the screen on the high...

    Vst was very clean, so was the screen on the high pressure pump.
  10. The symptom of this engine was “it runs, but runs...

    The symptom of this engine was “it runs, but runs rough”
    1. Compression test…all good
    2. Air compressor, turns by hand, no noises, strainer looked good (this engine was maintained pretty well)...
  11. This engine was used in salt/brackish water.

    This engine was used in salt/brackish water.
  12. Sorry. Betting against the fuel problem. Previous...

    Sorry. Betting against the fuel problem. Previous owner only used ethanol free, all screens in the vst are clean so are the injector screens. The tracker valve is purple. Does that indicate...
  13. Heres the pic

    Heres the pic
  14. Tracker valve seat on the fuel rail a little chewed up. OT737852

    The purple tracker diaphram looks ok. But the seating area is a lttle chewed up. Can a smooth this out with a dremel? Or are these rails doomed? Will post pick as soon as i can
  15. Applicable lower units for my 2.5L OT737852

    The lower unit on this old OptiMaxx has a crack in it…A guy down the road has a lower unit on a 98 OptiMaxx… Unfortunately I can’t get the serial number off of it… The plate is completely faded....
  16. Can you eliminate the awkward plastic air filter cover?

    I was looking at it today on my 2.5 L. Seems like you could get something that would ring clamp to the two items that need to be filtered. (Air compressor intake and the main engine air intake. I can...
  17. 150 optimax 0t737852 can i hook up a starting trigger?

    I have a nice 14pin switch, but as you can see my 2002 optimax had 8 pin female, i really dont want to apend the money for the adapter. Can i simply buy a start trigger? This is for doing “on the...
  18. What years of optimax 3.0l should i stay away from?

    I am looking at buying a 3 L OptiMaxx for my pontoon boat…i am wondering about the following….
    1. What year did they really get the design bugs worked out? 2002 and newer?
    2. what are the features...
  19. Will wiring harnesses switch with no problem Ot-065888 to 1b288402.

    I currently have a 2.5 efi from 99 or 2000 on the boat. Looking to swap with a 2006 optimax. Will i hit any roadblocks with the rigging on this swap. Specifically the engine harness?
  20. What is the cruising speed fuel burn of 2.5L efi vs 2.5L optimax

    Here we go again. I found a good clean 2002 optimax for 2k. About the same price that could get for the 2.5l efi that is currently on the boat. I dont care about speed. All care about is saving $$ on...
  21. Sounds good. I will make it happen and report...

    Sounds good. I will make it happen and report back here
  22. The schrader valve on my vst/fuel regulator is leaking.

    Ot-065888 can i replace it with any internal valve like a tire? Or because its fuel related...is it a special kind of valve?
  23. Need help finding “flexible” smaller diameter fuel lines. Replacing the grey stuff.

    Ot-065888 I tried replacing the old gray fuel line off of the top of the diaphragm lift pump (goes from top of lift pump to the input of the water sep filter)… With good black new fuel line. But the...
  24. You are wrong about the pee stream. Thermostats...

    You are wrong about the pee stream. Thermostats have nothing to do with it
  25. I an not hearing anything “whirring” at key...

    I an not hearing anything “whirring” at key up...but it must be working! Thanks, now...will 2017 four stroke hook up to that rigging?
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