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  1. Lou C

    Need help diagnosing temperature problem on Volvo Penta 5.0 GL-J

    The other thing that can cause overheating at higher speeds is leaking head gaskets. It explains how to check for this in the document (basically you just replace the manifold feed hoses with clear hose & run it on plane then check for bubbles in the cooling water flow in those hoses) . I had...
  2. Lou C

    Water in bilge has returned in 1995 Four Winns 190 Horizon

    It’s possible something went wrong with the bellows install, I’d test it but pull the drive & look. It’s not a hard job but there are things you need to make sure are right.
  3. Lou C

    Water in bilge has returned in 1995 Four Winns 190 Horizon

    On my 88 Horizon 200 the OE transducer is glued to the inside of the hull but is not a thru hull unit; these shoot the signal thru the fiberglass. So unless they did something different on the later ones I don’t think that’s the problem. That never worked on mine I installed a transom mount...
  4. Lou C

    HELP!! 2001 Volvo Penta SX running hot

    that, and the water tube grommets can deteriorate and suck in air
  5. Lou C

    Water in bilge has returned in 1995 Four Winns 190 Horizon

    I would to further investigate: Start with a totally dry bilge, put your cell phone on a selfie stick and have someone slowly back the boat into the water and watch & listen. One problem and it is a significant one, is that I/Os by nature of their design have a lot of places to leak water at the...
  6. Lou C

    What is normal temperature 3L Volvo Penta?

    It should be a 160 stat. I never had a 3.0 but I have a 4.3 V6 Cobra with the same thermostat housing and exhaust design as the Volvo and it ranges from 160-175. If it is really hitting 180 that is a little too hot. Try taking IR temp gun readings on the stat housing or right where it bolts to...
  7. Lou C

    Need help diagnosing temperature problem on Volvo Penta 5.0 GL-J

    I think when you have a 160 stat you should see this at idle. Pic was taken in the water after cooling down after coming off plane. Maybe a bit higher but based on my experience (only difference is I have a 4.3 with the Cobra drive mounted impeller, but exact same thermostat housing & exhaust...
  8. Lou C

    Need help diagnosing temperature problem on Volvo Penta 5.0 GL-J

    In the drive there are 2 water tube grommets that seal the water transfer tube that sends water up from the lower unit to the upper unit. These can deteriorate over time and cause lowered raw water volume as can that plastic fitting in the pivot housing which can crack. However these factors...
  9. Lou C

    Is Hull fixable

    Run like hell from that one unless you want a real headache!
  10. Lou C

    Quit My Job . . .

    Join the club Ted, that’s what happens when you retire! You don’t have as much time as you think…
  11. Lou C

    Water in bilge has returned in 1995 Four Winns 190 Horizon

    That model has the raw water pump on the engine not in the drive. You should pull the drive to check the drive shaft bellows for water.
  12. Lou C

    Quit My Job . . .

    Teds Mercruiser Repair & Marine Interiors I can see it now!
  13. Lou C

    Happiest Day of Ownership !!!

    Ah the bottom paint is a job I gladly pay for even on a small boat like ours. I do paint the out drive but that’s it….
  14. Lou C

    4.3 over heating at low rpm Help

    When checking your temps with an IR temp gun you’ll find different parts of the ‘stat housing read very differently. On my OMC/Volvo design the top and sides read cooler than actual temp, I find that the location that reads most accurate is the intake manifold right under the stat housing...
  15. Lou C

    A Unique problem I have never seen

    Someone watching too many You Tube vids on winterizing.
  16. Lou C

    "Premium" vs "high performance" lube

    I’ve used the Merc High Performance on my Cobra because the OMC gear lube was hard to find locally. Been using it 15+ years with excellent results.
  17. Lou C

    No ground in fuel pump relay socket Volvo Penta 4.3 GXI

    That looks like the throttle body injection system used by GM where there are 2 fuel injectors like a 2 bbl carb. A stopgap system between carbs & port fuel injection.
  18. Lou C

    Ford 302 spark plugs

    When I pull the carb off for a rebuild always tape a piece of cardboard over the gasket on the intake!
  19. Lou C

    Ford 302 spark plugs

    Arrgh every mechanic's nightmare!
  20. Lou C

    2004 Merc TKS intermittently missing, running rich, running on.

    The Mercruiser 4.3s did seem to have a run on (dieseling) issue because I recall seeing a TSB to correct or at least reduce this problem, I don't recall if it was specific to the 2bbl or 4bbl carb though. Interestingly I have never had this problem with my OMC 4.3 4bbl Quadrajet carb version...
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