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  1. K

    aq115 oil and water mixing

    Make sure that someone did not block off the weep hole on the water pump, if the seals in the pump leak I have seen that happen when someone thinks that is the cure. It lets water get into the timing cover.
  2. K

    Alpha One Gen 2 impeller delete question

    Mercruiser also recommends using the drive pump along with the crankshaft driven pump when pulling water from the bottom and connecting them with a “Y” pipe setup. Since there is a sea valve you can shut it if you want to run the boat on a flush out.
  3. K

    Discontinued thottle part

    You do not have to buy the exact control. There are some used that will replace yours. Google “used marine controls”
  4. K

    How do I set fuel/air mixture 3L Holley carb?

    1 other thing on a Holley running rich, the gasket between the metering block and main body sometimes will shrink causing fuel transfer ports to cross over.
  5. K

    1989 OMC Ford 2.3L finding cylinder #1 on Mallory (YS621CV) Distributor Cap

    It does not matter as long as the rotor lines up with whatever spark plug wire going to the #1 cylinder when the #1 piston is at tdc firing position and the timing mark on the harmonic balancer line up with the “0” mark of the tab of the timing gear cover.
  6. K

    Seriously stuck gimbal bearing

    2Xs with Chris’ slide hammer. I have the exact one like his. And I have pounded myself to exhaustion also. If the bearing is that corroded then water has to be the cause. The bellows must be changed. You need to remove the bell housing to give yourself more working room. Carefully drilling...
  7. K

    Omc 5.7 cobra. 1992 sunbird.

    You need to replace the points and condenser. Once points act as your‘s are doing it will never run. Filing the points might help but in most cases only temporary. You probably have a Prestolite distributor. NAPA will have them.
  8. K

    My OMC, 305 V8 stinger has a Prop Lyft problem

    The glass fuse holder that provides current to the tilt/trim solenoids can cause a problem. The fuse holders tend to loosen up and may be the reason. Remove the fuse and pinch the holder on both ends to give the fuse a better contact and also replace the fuse with a new 50 amp one. Or go to a...
  9. K

    HELP!! 2001 Volvo Penta SX running hot

    If you have a leaking head gasket you will see the water in the incoming hose disappear because the combustion pressure leaking will be more than the sea water pump can overcome.
  10. K

    Need Penta AQ125a Carb -1983 Bayliner

    Most times those carburetors can be disassembled, cleaned without needing any parts. Remove all the fittings and blow everything out with compressed air. Set the idle mixture 1.5 turns from lightly seated.
  11. K

    454 Low Vacuum + Flutter?

    I had a MK4 330 hp 454 ”V” drive in. 24’ Campbell, I could get 14-15 ins. On the trailer. Roughly 1/2 of that in the water. google the procedure for adjusting the secondary air valve spring on your Quadrajet.
  12. K

    454 Low Vacuum + Flutter?

    Keep in mind that there is more vacuum when the boat is on land, the back pressure when the boat is in the water on the exhaust will change the vacuum reading.
  13. K

    My OMC, 305 V8 stinger has a Prop Lyft problem

    The spring coupling is known as the “hammer blow coupling“ in the OMC service/parts manual. It gives the motor a free 1/4 turn before it engages the tilt worm shaft. Check post#2 about the plastic thrust washers. They center the coupling.
  14. K

    Mc-1

    The spring loaded button on the top of the lower vertical shaft pushed the upper gear shaft upward in the driveshaft housing enough that the seal did have enough contact with the seal surface extension on the lower gear. A good chance that either the seal surface is rusted or there is a groove...
  15. K

    Impeller- Red paint- remove before removing screws??

    Do a compression test before anything else.
  16. K

    My OMC, 305 V8 stinger has a Prop Lyft problem

    With the drive down remove the rubber bumpers then back the 4 saddle mounting bolts 1 turn. Pump sone grease in the fittings, snug up the 4 bolts but not tight then try raising the drive, see if that helps. Then tighten them. are the 2 plastic thrust washers on both sides of the spring coupling?
  17. K

    Boat starts in driveway and on water but not on ramp

    Just to be sure do the voltage check. That will narrow down the problem. A low or no voltage by pass circuit is real intermittent. Remove the flame arrestor, hold the choke open and have someone pump the throttle a few times look into the air horn to see if the accelerator pump is squirting fuel.
  18. K

    Boat starts in driveway and on water but not on ramp

    If there was water in the carburetor it would not go wot. Get a volt meter, check the voltage at the +or bat side of the coil while the engine is cranking. There has to be 12 volts when the engine is turning over. If below that or no voltage then the ignition by pass circuit is the cause. The...
  19. K

    Trim goes up but not down

    2Xs withe Dubs283. You overloaded the circuit jumping from the + on the coil to the pump. The color is easy to remember of the wires In the trim circuit. Green grass down and blue sky up.
  20. K

    Seriously stuck gimbal bearing

    If you cannot remove it with a slide hammer as Chris said then un bolt the bell housing and bellows. With a good punch hit the bearing so that it rotates 180* in the carrier then you will be able to drill through the aluminum outer carrier which should weaken it enough. Then with the slide...
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