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  1. K

    1982 omc 400 ss help please

    With a test light and some help have them turn the key while you probe the small yellow/red wire on the boost solenoid. If the light comes on and there is no “click” then the solenoid is the problem. If no light then go to the ignition switch and probe the same color wire, if there is a light...
  2. K

    1983 Mercruiser 470 Runs fine then loses RPMs slowly then dies

    After checking out the fuel system try this. The only other thing that I have seen do what you are describing is the resistor wire. Just secure a volt meter on the + side of the coil next time out and check if the voltage drops below what it was when you first started the engine. If you have...
  3. K

    1992 Luhrs Motor yacht Drive Shaft Issue

    Why not check the alignment with the feeler gauge before drydocking? Another thing to remember, depending on how the hull is supported alignment can change when the boat is back in the water, so you must recheck the alignment after the the boat is launched.
  4. K

    Leaking Fuel Sender

    Did you try just tightening the 5 screws? It is easy to make a new gasket from a sheet of cork material. I have acquired it from a NAPA store. 1/16” thick material should be all you need. A common squeeze hole puncher will cut the 5 holes. Just cut the center hole enough for the sender...
  5. K

    1992 Luhrs Motor yacht Drive Shaft Issue

    Remove the 4 bolts/nuts that retains the coupler to the transmission. Then with a feeler gauge checking all the way around you will be able to see if just the engine needs to be realigned to the propeller shaft coupler or that the shaft is bent. If you can move the engine enough to get the...
  6. K

    Throttle issues

    Most likely the cable from the transom to the drive is broken. Get a Genuine OMC service manual that covers your model.
  7. K

    91 Seaswirl 4.3 OMC Cobra Shifter Lever Controls.

    Make sure that the fine threaded plastic cable anchor is not tight against the plastic slider part of the cable.
  8. K

    problem wiring slave selenoid on 1989 Alpha stern drive -3 litre engine

    You need to get a test light and test the small yellow/red on the boost solenoid while someone turns the key.
  9. K

    volvo penta parts

    NAPA also has them. The one used on Fords will work on some Mercruisers. Take it off and go to a NAPA store they might be able to match it up.
  10. K

    Trailer Leafsprings Bottoming Out

    The spring eyes are too far apart for the anchor points. Just have a welder cut the rear shackle mounts and move them back to where the shackles are vertical.
  11. K

    350 Chevy OMC stalls after warming up.

    Does the distributor produce a spark from the coil wire ? Try holding the wire 1/2” from the manifold while someone cranks the engine over.
  12. K

    Looking for a Definitive Answer On AQ Drive Oil

    Same with me. The Volvo distributor Power House Marine was in Bradenton, FL. It was owned by the Copatelli family and the outside salesman was Dean Rainey. They stocked the Outboards and I saw them at marine trade shows in the 70s.
  13. K

    pressure in upper gear case

    The sealing surface on the ball gear has small porosities where the seal lips contact it. This is where 90% of the water enters the gear case. As in post #3 the gear case goes from positive to negative pressure which allows water to enter the gear case.
  14. K

    pressure in upper gear case

    3 things could be the cause. The stainless plate or the pump housing is upside down or the 1/2 moon key slipped fron the slot. Just take your time and go over the job, you will find the problem.
  15. K

    Oil pressure on 1986 OMC cobra 5.7

    The engine temperature even on the flushout should not go over 160*. You may have some water pump impeller parts blocking the cooling system. Just be sure that the temperature stays @ 160 when you put the boat back in the water.
  16. K

    Engine wont shut off with key

    I hope you have a 12 volt test light. That is one of the best tools for quickly finding electrical problems. That will help you find where the current is coming from.
  17. K

    Engine wont shut off with key

    On the ignition switch remove the wires that go to the gauges, one of them is the one that is feeding back to the ignition switch. Whichever one has 12volts is where you start tracing to find the source.
  18. K

    Engine wont shut off with key

    Disconnect the purple/yellow wire or the one marked “I” on the solenoid and check if the engine continues to run. Sometimes the small ignition “bypass” wire inside the solenoid will break and continue to feed the ignition circuit.
  19. K

    How to adjust reverse lock valve without pressure gauge.

    Are you working with the later internal reverse lock style Prestolite pump?
  20. K

    AQ125 not going beyond 2000 RPM under load

    It will work, just be sure that the oil in the replacement drive is clean with no water or metal pieces. Also look at the nipple that the water hose connects to is nor worded away. Replace the drive shaft bellows and feel the universal joints for smoothness.
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