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  1. Lou C

    4.3L mercruiser engine

    Some of the other readings don't make sense, your engine temp is very low, yet water pressure is also low, with low water pressure you might expect the engine temp to be too high....
  2. Lou C

    outdrive stuck

    How about heating the inner race of the bearing?
  3. Lou C

    93 mercruiser 4.3 alpha one gen 2 fuel problem (I think)

    Well you’d have to know how much the floats are supposed to weigh or buy a new set and compare new to the old. I haven’t had that problem with the Quadrajet in the boat but it can happen…I have heard of those floats in the Carter/Weber/Edelbrock 4 bbl rubbing against the side of the fuel bowl…..
  4. Lou C

    Sealing the U-Joint Bellows watertight on an OMC Cobra

    PS I inspected the bellows today because I was going to reinstall the outdrive, and it looks good, no small cracks anywhere, even though it was installed 9 years ago!
  5. Lou C

    Is this Water Pump to Gear Housing Adapter Installed Correctly?

    Sounds good! Today I replaced that o ring on the bellcrank & put the drive back on & fired it up after its long winters nap..
  6. Lou C

    Sealing the U-Joint Bellows watertight on an OMC Cobra

    Looks good!
  7. Lou C

    Is this Water Pump to Gear Housing Adapter Installed Correctly?

    Here’s mine, crusty one is my original run in salt water for 20+ years one Next is a spare unit I bought for parts. Both appear to be flush with the upper gear housing
  8. Lou C

    Is this Water Pump to Gear Housing Adapter Installed Correctly?

    The other thing to look for is water in the gear oil, that seal is what keeps water from the water pump out of the gear oil.
  9. Lou C

    93 mercruiser 4.3 alpha one gen 2 fuel problem (I think)

    Those Carter/Weber Edelbrock carbs actually have 2 float bowls on either side of the central venturis and so you have 2 floats, 2 needle valves. Could be something quite simple as the rubber needle valve tip deteriorates just due to time. My test for leaky floats is to unbolt carb & dump out...
  10. Lou C

    Volvo Penta 5.0 GL PWTR - severe overheat - thought I was on fire - troubleshooting Questions

    I rolled the dice on this one and it worked out fine but it was a bit of a gamble esp because mine was used 100% in salt water & the water was in the oil for about a week before I could get the boat out of the water and start Diagnosing it. Changed oil 3/4 times and drained the engine of water...
  11. Lou C

    Volvo Penta 5.0 GL PWTR - severe overheat - thought I was on fire - troubleshooting Questions

    You can temporarily replace the hoses from the thermostat housing with clear hose of the same diameter. You have to run the engine when it’s in the water & under load & good & hot to ensure the that the thermostat is fully open, look for bubbles in the cooling water inside each hose as it flows...
  12. Lou C

    Water in Oil

    https://www.perfprotech.com/blog/boat-and-engine-technical-tips/marine-exhaust-systems/mercruiser-4-3l-v6-exhaust-manifolds-2
  13. Lou C

    Birds in the boat . . .

    I had to resort to 3 Gullsweeps to keep birds off my boat during the season, and also keep the old nasty fake cats around just in case, lol. The gullsweeps really do work, I had nothing on my mooring covers as long as I've been using them.
  14. Lou C

    Birds in the boat . . .

    I had them attacking the side mirrors on my old 98 Jeep while I wasn’t driving it for a year or so. As soon as I started using it again they disappeared!
  15. Lou C

    Bellows adhesive or not?

    The compression seal on the stern end of the bellows is used on all OMC Cobra and Volvo SX models; as long as it’s installed properly they do not leak!
  16. Lou C

    Sealing the U-Joint Bellows watertight on an OMC Cobra

    The most important things on the Cobra bellows install, is to make sure that: the ridge that's in the bellows lip fits into the groove in the gimble housing flange the hose clamp is oriented properly (approx 2:00 positon) the bellows is asymmetric so the side with more folds faces down, this...
  17. Lou C

    Water in Oil

    Change oil 2-3x get new exhaust bolted up take boat to lake, run it up on plane after warm up to get it nice and hot to boil out any remaining water watch oil pressure, and listen for bearing noises.
  18. Lou C

    Water in Oil

    I recall reading somewhere that when GM bought out the Vortec V6s the engines cost l more they came up with this idea to save money. OMC also had their own version of the one piece batwing from 1985-1990 on the V6, I had 3 sets of those on mine (salt water use, changed every 5/7 seasons) and...
  19. Lou C

    Gas/water separator filter

    And also dump the gas into a mason jar, this allows you to get a sense of what's in your fuel, and if your fuel tank might need cleaning, or is getting water in it
  20. Lou C

    Water in Oil

    Merc makes an OEM kit, and Barr Marine makes an aftermarket kit, I have used Barr with good results on my OMC, which also had the one piece V6 exhaust although I never had water leaks from those, but they were NLA when it was time to replace them.... Here's a link to a place selling the Barr...
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