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  1. K

    Cooling orifice tube

    Any boat with a Bravo that is getting old needs the water pickup plumed through the bottom with sea valve and connected with a “Y” fitting connecting the drive incoming water to the bottom incoming water . If you go on the Donzi site you will get the idea how much this a problem solver.
  2. K

    OMC I/O first test drive, need some part names.

    Google Taylor Made boat tops and hardware. They have everything you will need to repair the slide hardware. As far as the belt you will just have to experiment which one is correct. Take a close look at the pulleys for rust. That always kills belts and the dust from the belt will end up...
  3. K

    1990 Chris-Craft Concept 4.3 OMC Cobra PLEASE HELP

    Take some pictures of the wires, label them and every thing will work. If several wires are on the same terminal tape them together before removing them.
  4. K

    1990 Chris-Craft Concept 4.3 OMC Cobra PLEASE HELP

    The blower, bilge pump, lights or any other items not related to the engine’s operation are on a seperate circuit and should not be fed through the ignition switch. In other words their circuits are always hot as long as the battery is connected. I have seen boats that had the fuse panel being...
  5. K

    mercuiser 888 wont idle below 1000 rpm

    You need to check that the”0” top dead center timing mark on the balancer and the timing pointer with #1 cylinder at top dead center are the same. It may be possible that the outer ring of the balancer has slipped. When a Holley carburetor is correct the idle stop screw is around 1-1.5 turns...
  6. K

    Overheat after high RPM run 350 MPI from 2001 with bravo one

    Have you replaced the impeller in the sea water pump recently? Worse case scenario could be a case of Bravoitis.
  7. K

    1990 Chris-Craft Concept 4.3 OMC Cobra PLEASE HELP

    The start wire is the yellow/red, the ignition should be purple and as you already know the battery wire is red. If you remove the switch the backside should be marked B-bat, s-start & I- ignition. Do this and be sure that all the wires on the backside of the instrument panel are tight.
  8. K

    Head gasket replacement for an old boat

    I think you have more than a head gasket leak. Pull the intake manifold and you will probably see a crack or a piece of the block laying in there. Do this first before ordering any parts.
  9. K

    AQ125a overheating

    Just try it in different settings. Most times the center hole is the best all around. Is your transom flexing? Bayliners have a bad reputation with transom problems. Look inside where the bolts come through, check to see if the hex nuts are tight.
  10. K

    AQ125a overheating

    The kick stand you referred to is the trailering bracket. It has to be removed for boating. The way the Volvo trailering/beaching lift is made the pitch of the lift screw will not hold the drive up when trailering and the drive could be dragging on the ground.
  11. K

    for discussion

    There is a marina somewhere in Nova Scotia that has under ground power cables. At a OMC seminar they showed us a picture of a drive completely eaten off at the water line.
  12. K

    1987 VP 290 cooling problem

    In the lower the water cavity should be open. The stainless tube in the suspension fork is hollow. Unless it is packed with mud I cannot imagine what could cause water not to flow. Keep us informed what you find.
  13. K

    1987 VP 290 cooling problem

    Try plugging the hole first. Also check the area where the lower unit mates to the suspension fork. There is a “O” ring at that joint that will get air if the “O” ring is worn. This causes overheating when the boat is planing.
  14. K

    2005 5.0 gxi-b belt jumped and wiped out,

    If there are 2 brackets using the same mounting bolt maybe the pump bracket goes under instead of over.
  15. K

    What reason causes the water leaking into gimbal bearing house?

    It needs to be really glued in place with some 3M or similar adhesive. Leave it set for some time. Use a new gasket and water passage “O“ ring. Support the drive so that you do not have to hold it up to install it. Without support you run the risk of dragging the large seal ring into the...
  16. K

    What reason causes the water leaking into gimbal bearing house?

    Have you pressure tested the outdrive? Is there water in the drive? When the drive was installed was the large rubber ring glued in place?
  17. K

    Major engine malfunction today and could use advice on next steps

    I doubt the coil is bad. The only vulnerable part would be the solid state parts.
  18. K

    Major engine malfunction today and could use advice on next steps

    The squeal was probably the alternator belt. I am going out on a limb but with the loose ground cable it caused maximum load on the alternator and voltage spikes on the negative side that could have cooked the electronic ignition if you have it. I am just guessing but this is the only thing I...
  19. K

    Mercruiser Alpha 1 Shift Interrupt

    Another thing that may help. There is a “V” shaped stainless wire spring that centers the “V” notch interrupter lever. Remove the lever remove the bolt that holds the spring and try spreading the spring wider giving more tension. When the cable is in good condition you should be able to...
  20. K

    1970 MC-1 gear oil blockage.

    The vent is the one just above the cavitation plate. The larger one above it was for a flushout. It would connect with a threaded hole in the water pump base plate. So just remove the vent plug and pump the oil in. There should be 2 plugs on the upper, pump oil in one side until it comes ou...
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