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  1. K

    Trim won't stay in the up Position

    Since it is obvious that the relay is being energized as AD suggested the green wire is in contact with a positive source. Why not just bypass the green wire with a new one from the control to the down relay. Is the trim harness separate from the engine harness? Is the harness enclosed in a...
  2. K

    What is this and where does it mount?

    Question, have you ever rebuilt the Prestolite style hydraulic rams? Then you know about the thin outer housing. If someone jumps the up solenoid while the drive is shifted to reverse the rams will explode if it has the early style lock valve. The last generation of the Prestolite pumps had a...
  3. K

    What is this and where does it mount?

    Since you still have the original Prestolite system does the drive rise up when you shift to reverse? The blue wires from the Micro switch are supposed to prevent the pump from running in the up direction. If the pump tries to raise the drive while the valve is in the reverse mode and the...
  4. K

    Help Diagnosing carb vs ignition problem, 5.7 mercruiser

    If it was possible to leave the harbor on the good engine then try running the problem child once you are in open water to see how it does while planed out for 30 minutes.
  5. K

    Taking my 1984 LaveyCraft out of moth-balls

    Smart move, these things can become a Pandora’s Box once you start on them. 30 years ago it was no big deal because the special tools were still at my shop and genuine OMC parts were a phone call/fax away. If you start having drive pump problems and you have about 6” in front of the...
  6. K

    Help Diagnosing carb vs ignition problem, 5.7 mercruiser

    One thing to look at, after both engines are up tp temperature and are idling remove the flame arrestors and look at the Venturi boosters. Look to see if fuel is bubbling from the boosters on the engine that is giving the trouble. If so then it is gradually loading up with fuel. How does the...
  7. K

    SX outdrive stuck or was now broke :(

    If the bearing flange is actually bound in the pivot housing then if you remove the large socket head bolts then the shaft and pivot housing may come out as 1 piece.
  8. K

    SX outdrive stuck or was now broke :(

    The gear is a press fit. You might have some luck with a gear puller that can reach around the remainder of the retainer and with the torx bolt removed and the puller against the shaft. Once the retainer and gear are removed then you can remove the pivot housing and try pulling the shaft out...
  9. K

    Engine Replacement/Upgrade

    Another source is Marine Power in Pontchoula , La. Check their web site. They have distributors around the country.
  10. K

    Taking my 1984 LaveyCraft out of moth-balls

    Like SD said about the ball gears they are close to replacement time. The thing to be really cautious about is the shift cable. Hopefully it is not corroded in the intermediate housing where the outer jacket peals off of the core. In the past I have had to replace water pumps and ball gears...
  11. K

    Clamping ring VP 280

    If the bolt was turning easy and did not “bottom out” before it broke you could try a left hand drill bit with a guide to keep the bit centered it will back out. Otherwise if you cannot get it out the other 5 should hold things together.
  12. K

    Clamping ring VP 280

    Did the bolt break off flush with the adapter housing? If not there may be enough left to remove it with some vice grips with the ring removed or weld a nut to what is left on the broken piece.
  13. K

    SX outdrive stuck or was now broke :(

    No way that the retainer is bound up in the pivot housing. As far as the bearing retainer that may be all you will need to repair the drive along with the seals. I have had the fun of the drive shaft corroded in the coupler a few times when I had my shop. A real PITA. We used a cutting...
  14. K

    SX outdrive stuck or was now broke :(

    The only way to separate the shaft from the engine is either a cutting torch or an abrasive saw blade on a reciprocating power saw. Go ahead and try removing the gear as the previous post first. You might luck out.
  15. K

    SX outdrive stuck or was now broke :(

    It appears that the drive shaft is corroded into the drive coupler. The only way the shaft can be removed is to cut the shaft behind the drive coupler then the engine can be removed to replace the coupler and of course the drive needs to be repaired.
  16. K

    New used boat getting the water flowing

    If you can get a tool like a scribe that is bent at a 90* angle scrape out the receiver groove for the “O” ring. That should hold the thermostat in place if you have the correct “O”ring. I do not think silicone will be any help. OMC stringer water pumps outlast Mercruiser drive pumps, If the...
  17. K

    New used boat getting the water flowing

    Just like SD said you must have a thermostat. Without it you are getting a false reading, the rear of the engine is much warmer than the front and also you will start seeing white froth in the valve covers because the front of the engine is too cold. The lake here in New Orleans gets up to low...
  18. K

    Mercruiser 170 Pertronix Ignitor no spark

    Like SD said about the gray wire, you could try disconnecting the gray tachometer wire at the coil where there is just one wire connecting from the coil to the distributor.
  19. K

    2006 Chaparral with Carbureted 5.0 Mercruiser having alarm and limited power.

    Try the 6 gallon outboard tank test which will either point out or rule out the fuel supply from the tank. Quite often there is a restriction in the tank suction tube or even a fuel hose that has collapsed internally as well as the anti siphon valve.
  20. K

    not shifting into forward gear

    This is a long shot but the drive you are currently using may still have the original steel shaft with the splines worn/rusted away. I know the stainless ones started showing up in the mid 70s but you have to check. Is the bell crank tight on the bell housing shaft, sometimes the rivet that...
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