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  1. Scott06

    Spray of water from exhaust manifold above O2 sensor

    Probably cracked Looks like a pin hole near. I would dissasemble and use acetone or pressure test to see what's is going on. Are they made of aluminum or cast iron. Aluminum could probably be repaired but cast iron not so much
  2. Scott06

    bogging down after 5mins

    Additionally you can always run it off a remote tank to verify it is an issue with fuel system supply. As mentioned above that's what it would seem to be. Did it ever run ok with the new carb? often if fuel system is contaminated you will just pollute the new or rebuilt carb.
  3. Scott06

    Is my gimbal bearing sealed or greaseable

    to me that means the grease holes are not lined up and you are not greasing the bearing. Grease should be coming out around the shielding on the bearing. Run it till it starts making noise then replace it with a permalube or a properly placed greaseable aftermarket bearing. they groan when...
  4. Scott06

    Pitch perfect

    I might try a different 4 blade than the spitfire. On my 21 ft bow rider I got a ton of slip with the spitfire. It was pretty disappointing compared to the sales schtick. would also verify motor is low enough doesnt sound like it is - do you have a pic of the motor trimmed all the way down
  5. Scott06

    Have spark and fuel, can't get the rebuilt engine to start

    is he using the correct bank for cyl 1 . If I recall last cyl in firing order is 2 then dizzy goes back to 1- which sort of matches the offset to where it kind of runs?
  6. Scott06

    Have spark and fuel, can't get the rebuilt engine to start

    yes I could see it. it looks good but its a video shot in the dark obvious blueish white spark jumping a good size gap and snaping noise. Seems to be in decent time but also seems battery is weak
  7. Scott06

    Bellows replacement

    for all I have read about it here and other forums have not had an issue. my family has had a cottage in a shallow cove since the early 60s and the 3 I/O boats we have had have been 33, 25, and 20 years old. the greaseable u-joints in my '91 made it 23 years, the non greaseable in my current...
  8. Scott06

    Have spark and fuel, can't get the rebuilt engine to start

    more for if the valves are adjusted correctly. Common mistake can be to overtighten nuts on rockers arms, valves don't close. Have also heard that if one intake hangs open can prevent firing but never seen it myself. To the op might be worth checking the rockers on those low cylinder...
  9. Scott06

    Bellows replacement

    Does seem odd but may be influenced by water quality. I believe in salt or brackish they don't last as long. How were yours torn? My situation being in a shallow cove (drive almost all the way up to get in) and storing on a trailer with the drive up during winter layup puts more strain. The...
  10. Scott06

    Carter P4389 Doesn't Work when Connected to Carburetor

    Needle and seat in carb is stuck closed or pump is bad. Have you hooked up a pressure gauge to see if it makes pressure vs just pumping into a container ?
  11. Scott06

    Bellows replacement

    Would think a grand plus of minus a few hundred depending on where u are . Saw you comments In other post On lifespan.… use OEM parts in fresh water my u joint bellows were just starting to crack after 18 years . boat will sink if they leak and it is slip kept…
  12. Scott06

    Have spark and fuel, can't get the rebuilt engine to start

    Normally onky seen when timing cover is off. Google degreeing camshaft you likely can tell off the intake centerline. have you run a compression test? See if any cylinders may have valves set too tight. Id do this and verify timing again before taking engine apart. also had a engine with...
  13. Scott06

    Is my gimbal bearing sealed or greaseable

    Plain dot denotes greaseable bearing So someone Installed it wrong. see photos form 2009 merc service bulletin I would use it till it makes noise then replace
  14. Scott06

    2002 5,7 Mercruiser exhaust manifold keeps cracking - 5 times this summer

    Forgot it’s a twin good point
  15. Scott06

    mercruiser 4.3 thermostat housing

    yes that hole but I think AD meant do not use so much sealer on the end wall gaskets for the intake that it gets down in the hole for oil pressure switch. Some folks just use RTV sealant on ends and it can squeeze down in the oil passage.
  16. Scott06

    2002 5,7 Mercruiser exhaust manifold keeps cracking - 5 times this summer

    Is there the possibility of reversion , not sure how this would cause cracks but just spitballing as this seems to have everyone stumped
  17. Scott06

    Commander classic shifter issues

    trim gauge is separate from the trim limit. port side is the limit switch which is wired to the trim pump harness. The trim gauge has a sender on the starboard side that sends an ohm signal up through the engine harness to the dash. these two are best replaced while doing a bellows job...
  18. Scott06

    mercruiser 4.3 thermostat housing

    as stated the difference between vortec and non vortec is the heads and intake manifold with the 8 vertical intake bolts. If you can find the heads worth the effort if you are rebuilding the engine. the balance shaft came out maybe in 1992 and is not connected to the vortec head. lots of...
  19. Scott06

    Commander classic shifter issues

    just take note that with the trim limit jumpered you can over trim the drive when at speed. You are not supposed to go into trailer range unless you are no more than a fast idle speed. Usually the ujoints will start letting you know ....
  20. Scott06

    Trim Limit setting. 20deg?

    Re the trim gauge having grown up with boats that didn’t have them or current boats were non functional or inaccurate I wouldn’t waste the time to install it. You end up trimming based on load number of people and how smooth the water is so no gain in my opinion
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