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  1. Lou C

    VP 4.3GS Carb Tuning Vacuum Port?

    Great work!
  2. Lou C

    VP 4.3GS Carb Tuning Vacuum Port?

    From the pic it appears that the port side (cyls 1,3,6) are running very rich, could be the idle adjustment or clogged air bleeds on that side. If the carb is not totally cleaned out with proper float adjustment, good needle valve etc it should not continue to foul plugs like that.
  3. Lou C

    VP 4.3GS Carb Tuning Vacuum Port?

    From the pic it appears that the port side (cyls 1,3,6) are running very rich, could be the idle adjustment or clogged air bleeds on that side. If the carb is not totally cleaned out with proper float adjustment, good needle valve etc it should not continue to foul plugs like that.
  4. Lou C

    Out on the Lake Pictures

    North Shore of Long Island NY, our beach assn.
  5. Lou C

    1988 Four winns 180 horizon, were these OMC or Mercruisers

    OMC bought Four Winns & a few other companies around 1986 so many older Four Winns & Chris Crafts have OMC Cobra power. From like 86-96 or so. I would not be concerned about a Cobra to Merc conversion because it’s pretty straightforward no transom work needed.
  6. Lou C

    New/Returned Manifolds Need Threads Fixed 5.0 GXI

    Those bolts usually get only about 25 ft lbs so that should be ok. Just make sure the sealing surfaces are really flat. That’s the weak spot of this design. The pre cat converter exhaust Volvo used is the wet joint design. Just like what Mercruiser used pre 2002 or so.
  7. Lou C

    5.0GL fuel small leak near the water fuel separator and possible starter solenoid issue

    There should never be any fuel leaks especially on a gas inboard that’s a real hazard. Starting issue you many need to go thru every connection in the starter circuit to track down the bad connection or source of resistance.
  8. Lou C

    5.7 Mercruiser Starter problem

    That’s what I’m thinking of. Somewhere it may be losing voltage due to resistance or even something like a bad assist solenoid. When I bought my boat (2002) all the cables were in bad shape. I added a dual battery system in 2005 and up sized the cables to 2 gauge for the shorter ones and 1/0...
  9. Lou C

    5.7 Mercruiser Starter problem

    It would be interesting to see how much battery voltage drops during cranking.
  10. Lou C

    1996 Four Winns Sundowner with 5.0 Cobra engine and drive

    Great work! while you got the engine out, if there is any question about the condition of the power steering actuator, replace it! They are a bear to get at when the engine is in place. I had to remove the rear seats and both exhaust manifolds to do that job.
  11. Lou C

    2015 Motor MerCruiser 4.5L 250hp NO EC - OVERHEATING!

    Again I'm not familiar with these newer Merc engines and the cooling system is a lot more complex than the older models. However, on the old models the way you would test for leaky head gasket putting combustion gas into the cooling water, was to replace the hoses feeding the exhaust manifolds...
  12. Lou C

    2015 Motor MerCruiser 4.5L 250hp NO EC - OVERHEATING!

    Ok it’s hard to say but from the pix I’m wondering if the water passages in the exhaust manifolds & elbows are clogged. They don’t look corroded but I’d hook up a garden hose to them & see if they flow well & flow the same each side. Those temps seem really high seeing as how the engine is at...
  13. Lou C

    2001 Four Winns Horizon correct hull repair needed

    God knows what else the PO did! Don’t buy it!
  14. Lou C

    Oil Analysis Poor Sample

    What you can do is take another sample toward the end of your season. To check the intake you don’t need to pull it; you can drain the water out of the block & remove the thermostat housing. Poke around in the area right under the stat and see if the cast iron there is solid or not. A rottted...
  15. Lou C

    Are cheap carburetors good?

    Anything that cheap that is “new” is knockoff junk. I might try one on a lawnmower if no OE was available but on a boat or vehicle never. A real new carb is in the range of $550 for a 2 bbl on up. It is definitely worth properly cleaning & rebuilding your OEM carb as long as the inside isn’t...
  16. Lou C

    5.0 MPI Fuel grade.

    My fuel dock only sells 93 octane but I have also run mine on 89 octane from the gas station. On the flame arrestor on this engine I think it says 89. I don’t think you can go wrong upping the octane a bit due to carbon build up increasing the octane needs of the engine. Marine engines are very...
  17. Lou C

    Disc Brake Identification

    I’ve been doing that for years here in the salt pond. The best greases I’ve used are Evinrude triple guard & Lucas Marine grease (blue).
  18. Lou C

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    I wonder if you could back flush your raw water intake line from the impellers back with the outdrives off to really clean it out. I had such a problem with barnacles growing on that water intake screen in the lower unit I removed it about 10 years ago. After that I could easily rod out the 4...
  19. Lou C

    2016 Mercruiser 6.2L ECT DTS Axius Cooling System Issue

    One thing I wished they would have incorporated into outdrives is removable water intake screens; in my experience with salt water boating most restrictions are in the water intake area. I never found anything past there with pulling the outdrive every season. Some outboards have these but I/Os...
  20. Lou C

    Volvo Penta 5.7 GI-F (2006) water in Cylinders

    When I installed mine (Barr gaskets) I used Permatex Aviation as recommended by the Barr tech guy & no leaks after 4 seasons of use….
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