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  1. Lou C

    1995 5.0L Carb Replacement Options

    Just post a pic of your manifold; some were 2bbl only some were a 4 bbl with an adapter to fit a 2bbl carb. Remove the adapter & you can fit the 4bbl. I for one would always want a 4bbl in a marine inboard application. Just remember that any carb you get has to be a marine unit. They ARE...
  2. Lou C

    Omc 4.3 diagnosis

    If your ESA is working but gets stuck on it will lower the idle speed to approx 450 rpm and the boat will barely move. Points do need to be checked every season, I just check dwell & timing & idle every season. I get approx 5-6 seasons out of a set of points.
  3. Lou C

    New starter solenoid has no terminal for purple wire??

    You need the correct 4 terminal solenoid. There are 3 & 4 terminal versions.
  4. Lou C

    1989 4.3 mechanical fuel pump replacement

    PS interesting to note there is a Mercruiser version of this pump with that small filter and the OMC/Volvo version that had no filter as these had the larger canister filters.
  5. Lou C

    1989 4.3 mechanical fuel pump replacement

    I had the same issue had oil, not gas in that yellow hose. Replaced the pump anyway after 30 years because the rubber gaskets were looking really stiff & dried out. Replaced the tygon hose as well because the original was all stiff & hard to see thru.
  6. Lou C

    Camshaft Replacement on Vortec 4.3L 262

    I am going to look in my OMC shop manual to see if they list actual cam specs. One thing to keep in mind if you’re looking for a “truck” cam, look at what the primary application of the 4.3 was: Chevy S10 pick up & GMC equivalent Chevy Blazer & GMC & Olds equivalent Chevy/GMC Astro van Yes it...
  7. Lou C

    Boat hit 200 degrees engine temp

    Yep I always use OEM for mission critical parts like impellers & driveshaft bellows. This philosophy has worked well for me with 20 years of saltwater boating & no failures of either.
  8. Lou C

    Omc 4.3 diagnosis

    Also make sure the ESA is not stuck on, that will make it run poorly as can a defective tachometer. I had a similar problem several years ago because the small buttons on the micro switches wore out (after 25 years!) and caused the ESA to stick on….
  9. Lou C

    Boat hit 200 degrees engine temp

    It could be that, these raw water cooled systems depend on a high volume of water in (impeller) and out (exhaust elbows and manifolds)….
  10. Lou C

    OMC Cobra I/O Tight shifting

    Common Not a quick thing to fix, except make sure that your idle is no more than 600 rpm in gear in the water & that the ESA when triggered drops the idle down to 450 rpm. If that fixes it great if not you have some reading to do…. Do a search on my username I’ve sited how to get these shifting...
  11. Lou C

    Water line runs to backing plate drum brakes ?

    And salt water is not the devil people think It does NOT rot wood transoms like fresh water We never have low water levels And don’t have debris like logs etc like in other places….
  12. Lou C

    Water line runs to backing plate drum brakes ?

    You can use painted but here even on a land only trailer all I will use is galvanized. Because they come with better aluminum wheel cylinders and stainless springs.
  13. Lou C

    Mercruiser ECM replacement?

    Ah well that’s better than the alternative Don’t need to pull valve covers just remove the oil cap and look inside run you finger carefully over the inside of the cover (cold engine) & see what you see
  14. Lou C

    Water line runs to backing plate drum brakes ?

    Those look like old drum brakes, painted backing plates…here the only thing that lasts is galvanized…. If they don’t work I’d just replace them with galvanized backing plates complete with wheel cylinders shoes & springs….in fresh water they’ll last a LONG time…
  15. Lou C

    Water line runs to backing plate drum brakes ?

    Mine (salt water) has always had a flush system
  16. Lou C

    Mercruiser ECM replacement?

    Any water in the oil? What’s it look like under the valve covers? Clean oil or milky like mixed with water?
  17. Lou C

    Mercruiser ECM replacement?

    Yep not normal Possible causes: Engine not stored right, flame arrestor left off and rainwater gets in Internal engine failure like a blown head gasket can allow water in the intake (this happened to mine) Either one isn’t good…
  18. Lou C

    91 Seaswirl 4.3 OMC Cobra Shifter Lever Controls.

    Yes you can the idea is to get equal travel on either side of neutral
  19. Lou C

    Ideal tongue weight?

    Well I can see not fixing what ain’t broke but if you have to tow that over 30 mph, get it weighed and fix it. There is no way that a tongue weight of 172 lbs is safe for a boat that size. 3100 lbs? Well FW said the dry weight of mine was about 2600 lbs! I thought it was more more like 3500 but...
  20. Lou C

    VP 5.0GL-C Head Gasket FelPro Part Number

    And check the torque specs on those Vortec intake gasket they are much lower than the pre Vortec. The Vortec intake gaskets have locating pins that help hold them in place when lowering that heavy cast iron intake in place. Pre Vortec doesn’t so I used a bit of Permatex Aviation to hold ‘em...
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