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Recent content by jimn

  1. J

    mercury 150 is not overheating but when i flush it with a garden h mercury 150 hp. ose no water comes out the telltale

    Chase the telltale hole with a wire- it may be clogged. Also, this may have a poppet valve and that may be stuck.
  2. J

    Should I change my engine water pump assembly as preventative maintenance? 2006 Mercruiser 350 MAG MPI

    If it's not leaking, I wouldn't worry about it- I recently changed the water pump in my 2005 Chevy Astro, at a bit less than 292K miles- unless the water contains sand/other sediment and/or is brackish/saltwater, it's going to last a long time as long as it isn't run dry.
  3. J

    93' OMC 5.0 EFI - Struggling with hot starts, sagging drive and overheating at idle.

    If you run it normally/somewhat hard and shut t down, wait about 5 minutes before turning the key to ON (not crank). After that wait, check the temperature, but don't freak out when you see that it's around 200°F- it's normal, caused by heat soak (the heat lost by the hottest areas, gained by...
  4. J

    93' OMC 5.0 EFI - Struggling with hot starts, sagging drive and overheating at idle.

    Open the throttle a bit next time it has a hot start problem. If it starts easily, check the resistance of the ECT (Engine Coolant Temperature) sensor- if the resistance is too high, the ECM will deliver more fuel than needed because the resistance and temerature have an inverse relationship...
  5. J

    Rough and stalling idle. Repeatedly stalls when prop is engaged.

    Take a fuel sample. Loosen the fuel fill cap- if it wants to run, it could be a clogged vent line. If possible, use a fuel tank for an outboard and if it runs better, find out why. How did you set the idle screws at point 9 turns, by eye? Has anything else changed since last year?
  6. J

    Long steady beep 1999 Mercury 115

    Assuming this has a sensor in the oil reservoir, did you check that?
  7. J

    mercruiser shift cable install tool to help it tthru the bellow

    You can also push the tips of needle nose pliers in (make sure it's smooth), to stretch the opening a bit. That alone makes it easy to insert the end of the cable- that's how I did it. Once it has been passed through, the ring is crimped and it seals.
  8. J

    Mercruiser 4.3L Battery Cable Lengths & AWG Sizes?

    If it's intermittent, do a wiggle test. Best to only create one thread. Can you post a photo of the starter- the old style didn't use gear reduction and the new ones do- they need less current, although they still need a lot. Do you have jumper cables? You can use those to bypass the existing...
  9. J

    Mercruiser 4.3L Battery Cable Lengths & AWG Sizes?

    Is it cranking slowly, or taking a long time to start with normal cranking speed? You should be able to have the starter tested by a decent shop that specializes in automotive electrical work. You can do a voltage drop test to find out if the cables are at fault, but it's also a good idea to...
  10. J

    “Pre alpha” leak

    You won't blow it up if you use higher pressure- look at the diagrams for the drive- it's not going to bypass a paper gasket and if it causes leaking through O-rings and oil seals, it may be time to replace those because they don't last forever. When the bearing carrier was out of the lower...
  11. J

    “Pre alpha” leak

    The O-ring distorts and fits into the area as well as it can, but since the back edge isn't smooth, it may hold pressure for awhile, just not for long. Use denatured Alcohol to remove the sealant, especially if it was Perfect Seal or something like the Permatex mentioned before. Be careful...
  12. J

    mercruiser shift cable install tool to help it tthru the bellow

    Yes, it does, but I remembered that the V-P kits came with Glycerine from working at the boat dealership and since I had some in my garage, I didn't need to search.
  13. J

    mercruiser shift cable install tool to help it tthru the bellow

    I don't remember exactly (because it was several years ago), but I think I wrapped some tarp tape around the end to ease the edge, then put some Glycerine on it to lubricate. Glycerine is the lube hat comes with Volvo-Penta raw water pump kits and it won't damage metal or rubber. Woodworking...
  14. J

    4.3 Mercruiser - randomly dies

    As I mentioned, my small Craftsman slip joint pliers make it easy and I can go in from many angles in cramped compartments. If I had a dollar for every boat I worked on for a no start problem with loose wing nuts......
  15. J

    4.3 Mercruiser - randomly dies

    Did you make that?
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