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  1. K

    Engine won't shut off

    Take a close look at where the main battery cable is bolted to the solenoid on the starter. The battery cable could be contacting the bypass wire stud which will give a back feed . The wire may be black /purple. Another possibility may be if you replaced the boost or slave solenoid with a...
  2. K

    What is your worst day on the water?

    2 Steering rack stories. When OMC would come every year for the technical update seminar they told of a boat sold in San Diego to a guy with the rack backwards. Time passed and when the boat cane in for routine service one of the mechanics corrected the steering. The owner then crashed the boat...
  3. K

    What is your worst day on the water?

    One day in lake pontchartrain the wife and I were in or 16’ ski boat with a 135/t&t Johnson. There is a watering hole just in the yacht harbor entrance, so we were headed in when a 65’ footer came out, I had already slowed down and trimmed it in for the light chop but when the first wave...
  4. K

    Volvo Penta 270 reverse latch

    The rod that goes up through support yoke has to not contact the bottom of the rod that lifts the drive. The top of the rod should protrude from the support yoke about 1/2” when the drive is down. The fact that the latch stays down means that the top of the rod is stuck in the upper...
  5. K

    1975 Mercruiser Tilt/trim issue

    Re read my June 10 post. Unless you want to remove the gimbal ring which has to be destroyed to remove it. The trim limit switch is inside the top of the gimbal housing. locate the 2 wires going into the top of the gimbal housing and just connect them together. That way you just have to press...
  6. K

    1984 3.0 cobra

    What is wrong with the lifters? If they are cupped on the bottom you will need a new camshaft also.
  7. K

    Engine stalling when you give it too much throttle on take off

    Have someone watch the secondary butterfly linkage when you punch it. The linkage should not move until the engine starts to turn up. If it does move try to restrict it and see if does not bog or stumble.
  8. K

    1975 Mercruiser Tilt/trim issue

    There are many tiny ball bearings in the valve. They get lost easy so be careful. If you take it apart and replace the “O” rings do not be surprised if it still leaks. If you do R&R the valve make sure that the pump does NOT operate when the drive is shifted to reverse. Good luck. Start...
  9. K

    Weird overheating issues

    Seperate the risers from the manifolds inspect the mating surfaces, they should be smooth with solid material where the water passages are divided from the exhaust gasses. With the riser inverted fill the water side with acetone and the manifold body as SD mentioned. If you have a friend with a...
  10. K

    Weird overheating issues

    2Xs with SD and did you find the all the impeller pieces?
  11. K

    exhaust manifold

    Hope the manifold is not the $$$ catalytic converter type.
  12. K

    Oil capacity and accuracy of dipstick questions, 2017 VP V6-200-J

    The only thing that might help is to put the measured amount oil in the engine and either let it set an hour or so with the dip stick out or warmup the engine with the dip stick out. The hole on the bottom of the tube fitting is small and with the dip stick in place does not let the oil in the...
  13. K

    1989 Cobra on 4.3 liter engine makes a funny noise

    If water gets in the bellows all the grease gets washed out. The bellows must always remain dry to protect the bearing. The fact that the bearing was not seated will defenitely make noise as it causes the joints to be over loaded and putting too much linear pressure on the input shaft...
  14. K

    1991 OMC Cobra 2.3L - can't reach max rpm

    If your engine has a spin on style fuel filter it will be a good idea to get a replacement filter. Are the spark plugs new? A good time to do as Bondo said to check the compression. The Tygon hose has nothing to do with fuel pressure and as you mentioned it is there to save the boat from a...
  15. K

    1975 Mercruiser Tilt/trim issue

    The trim limit switch on your boat was designed to last about 13 months [ one month out of warranty] that is why you need to press both buttons to raise/trim your drive. The hydraulic trim sender is seperate from the reverse lock valve which is incorporated with the shift linkage. Try to post...
  16. K

    Outdrive up or down?

    I Think they came from the factory with water.
  17. K

    Speedometer Not Working

    The hose between the drive and the speedometer may have been rodent food. That happened on a boat I bought that had been laid up for some time.
  18. K

    1975 Mercruiser Tilt/trim issue

    Look up a post from May 11 this year. The poster replaced his old style Prestolite pump with a newer style “Oildyne” style. I explained how to adapt the style with pipe fittings from the local hardware or auto store. The only parts available for your pump are some of the electrical and none of...
  19. K

    4.3L Mercruiser overheating at idle

    There is a small metered orifice in the thermostat housing that could be stopped up with rust. A bead blaster would be a good way to clean it out.
  20. K

    1975 Mercruiser Tilt/trim issue

    If you listen close when raising the pump changes tunes just before full up, try stopping at that point or if it goes go full up try hitting the down switch, that may keep the pressure off just enough. Also keep in mind that if the drive is full up and is exposed to bright sun the pressure in...
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