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  1. J

    4.3lx power steering fluid cooler replacement

    Thank you guys. Haven't gotten a chance to dig into it yet but I'm hoping to this weekend or next week.
  2. J

    4.3lx power steering fluid cooler replacement

    It's leaking into the bilge, I cleaned everything and watched it. I can't see where it's actually coming from though, just that it's leaking down into the bilge area
  3. J

    4.3lx power steering fluid cooler replacement

    Thank you. Unfortunately that's probably what happened. Got hit with an early freeze and I wasn't able to get to the winterization in time. Threw a heater system in but it failed and I didn't know till the middle of the night. Got it sorted out but was worried about it. Ran the motor today and...
  4. J

    4.3lx power steering fluid cooler replacement

    Good evening everyone, I just had a question about the power steering fluid cooler on my 4.3lx. The boat is a 95 and I can only guess the part is original to the boat. Is this a part that will fail? I ask because there just isn't much to it. Mine has a slow leak and I lost all my fluid over the...
  5. J

    95 4.3lx alpha one mercruiser cooling system question

    I think I'm all good. Replaced thermostat and all gaskets, I was able to get the hose back in place without removing any of the bellows or other items. It was difficult for sure but I believe everything is good to go. Muff test was successful, boat achieved operating temperature and sustained it...
  6. J

    95 4.3lx alpha one mercruiser cooling system question

    Thank you! So the drive side outlet is a barbed connection, does this connection need bellow adhesive and a hose clamp or should this be a clamp only. I'm going to tackle it over the next couple of days so I want to make sure. I bought the adhesive but don't want to screw anything up. If it's...
  7. J

    95 4.3lx alpha one mercruiser cooling system question

    Finally figured it out. Water line had pulled off the out drive so nothing was getting to the motor. Due to the way the water was pouring during muff testing it looked like it was coming from the right spots. Should there be a hose clamp on the drive side of that heater hose? I ask because mine...
  8. J

    95 4.3lx alpha one mercruiser cooling system question

    Missed this message, thank you, I'll try that
  9. J

    95 4.3lx alpha one mercruiser cooling system question

    OK so, new impeller and is functioning fine. I actually removed my thermostat to eliminate it as an issue, waiting for the new one to come in but wanted to test. Boat ran cool for about 10 min on the muffs then it started heatind up again. There are square head plugs in my circulation pump, can...
  10. J

    95 4.3lx alpha one mercruiser cooling system question

    Thank you. No leaking from the pump which is why I mentioned it, just trying to identify the problem. I'm new to working on marine applications myself so trying to learn. Impeller seemed to work when tested but may just not be delivering enough water, not sure what the flow rate should be. Water...
  11. J

    95 4.3lx alpha one mercruiser cooling system question

    In a vehicle, many times if the circulating pump fails there is a weep hole that helps identify the failure. Does this feature exist in marine applications? The 4.3 is just a truck motor so does this feature potentially exist for a marine application? Is there a way to identify of the...
  12. J

    95 4.3lx alpha one mercruiser cooling system question

    What should it be like.
  13. J

    95 4.3lx alpha one mercruiser cooling system question

    Yes, bucket was above the outdrive on the sundeck, I used it like I did to winterize with a hose running to double sided muffs. Nearly 4ft drop to the intake.
  14. J

    95 4.3lx alpha one mercruiser cooling system question

    OK, so I finally got a chance to get I to troubleshooting the issue. The impeller seemed to be drawing the water just fine, at idle I drained a 5gal bucket in about 2-3 min. Water seemed to be glowing fine but it began overheating again. My next check is the thermostat. I honestly don't think...
  15. J

    95 4.3lx alpha one mercruiser cooling system question

    Probably gonna troubleshoot it when I get a chance. Set it up like I'm gonna winterize and see if it draws from the bucket. Just weird, winterized and summerized without issue till I took it out on the water.
  16. J

    95 4.3lx alpha one mercruiser cooling system question

    I understand and agree. However, this boat is a 95 and while I assume the tstat has been changed before I'm betting the housing is original. If I'm going through the trouble of checking the mechanics of a 30yo boat part I may as well change it while I'm in there. I've had it since 2016 and...
  17. J

    95 4.3lx alpha one mercruiser cooling system question

    I haven't gotten a chance to get in there yet but I don't think so. I can't find anything about them anywhere. Is an impeller a possibility?
  18. J

    95 4.3lx alpha one mercruiser cooling system question

    Should I just replace the housing and t-stat?
  19. J

    95 4.3lx alpha one mercruiser cooling system question

    Original post said it all really. It was strange, winterization went fine, antifreeze drew in without issue. Summerizing went fine, clear water came out as it should when flushing the system. Changed oil in motor and lower unit (did lower unit for winterization but got the wrong juice so...
  20. J

    95 4.3lx alpha one mercruiser cooling system question

    You said check balls and Springs at risers. I'm not familiar with these and I'm struggling to find a YouTube video of it. What am I looking for there?
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