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  1. U

    Exhaust header leaking.

    Just back from starting the motors and discovered that the port motor exhaust header on the starboard side is leaking. Twin 4.3 efi, 2001, engine serial # omo 25934. Am planning to go down tomorrow to remove the header for a good inspection but it looks like it is leaking from the stern section...
  2. U

    Alfa 1 gen 2 shift Lower Shift Shaft seal change

    Winterized the drives and found milky oil in star drive, removed the drive drained and refilled with engine oil until I get a chance to work on it, Plan to do a pressure test but I believe it is leaking at the shift shaft seal, when I confirm this I will separate the top and bottom drive and...
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    4.3 EFI will not run in idle. Help

    Just left for a 10 day cruise and as we were pulling into a slip the port engine cut out. It restarted again but will not run on idle? If I increase the rpm by 100 it will continue to run as if nothing is wrong but set to idle it stalls. Looks like we will be heading home if I can not get it...
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    Hp required for outboard on swim platform. update.

    I have a sea ray 280 sundancer and want to put an outboard on the swim platform? Anyone done this? I would like to do the Trent lock system from lake Ontario to Georgian Bay and back next season but cant afford the fuel to run the twin 4.3 for that distance. As the trip would be several hundred...
  5. U

    Mer 4.3 twin steering adjustment.

    On my 280 sea ray the starboard drive has very little steering play however the port has almost 1/2" of movement, I would like to reduce this and align both drives, is there an adjustment on the port drive that i can use to take up the play? and if so how do I get to it, and is there a spec for...
  6. U

    Gimble bearing removal update.

    I have reviewed the different ways to remove gimble bearing but before I start cranking on a bearing puller I want to be sure there is no retaining ring holding the bearing in place. My drive serial # is OL935713 do I set up the puller and just crank? I have not removed the bellows assy can the...
  7. U

    Alignment tool measurements.

    Just printed out the measurements for the alignment tool which Don S pointed out was in the adult only thread. Thanks Don. Am now off to my garage to start making. Great site lots of info. Ulster.
  8. U

    Over voltage charging on 4.3 OMC

    I have twin 4.3 omc 1986 with cobra drives. During prep for the water this year I had the batteries checked at a reliable source they indicated on was in sad shape so I bought a new one same cca etc. Upon install I wanted to ensure correct voltage to the system so I turned on my fish finder and...
  9. U

    OMC Cobra shift cable replacement

    Twin 4.3 OMC with cobra drives I broke the shift cable which engages reverse and forward between the motor and the out drive on the port motor. Removed the out drive and discovered the outer sheath right at the brass slider where the shift cable guide slides on was broken. Unscrewed the brass...
  10. U

    OMC 4.3 overheating at idle.

    Installed new botton end impellers this season and on the starbord engine I have an overheating problem at idle. As soon as I increase the RPM's to 1500 the temp drops and she runs at normal op. temp. Go back to idle she overheats again. It seems that I am not getting enough cooling water from...
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