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  1. Lou C

    Risers - think I caught this just in time?

    Post up a pic of the water outlet area. They look good from what is showing in the pix. Fresh water or salt? Is the rust just surface rust or do you see chunks coming off if you poke it with a screwdriver? If surface rust ok but if chunks are flaking off then replace.
  2. Lou C

    4.3 TKS "Run On" fixed but Slight Loss in Performance

    Fouled with carbon suggests rich fuel mix not lean… Running hot/lean would show blistered white on the center electrode insulator.
  3. Lou C

    Risers - think I caught this just in time?

    That could be condensation, because even if the outer water passages leaked I doubt it will find its way inside. I’d at least replace the elbows and see how the mating surface of the risers (spacers) & manifolds clean up. What I’ve done is to take off the manifolds and prop them up level & fill...
  4. Lou C

    new 5.7 vortec parts

    If the oil pans are the same then your old parts should fit….if both engines are Vortecs the outside deminsions & other parts are pretty much the same however GM did some odd things like mixing SAE & metric fasteners on the same engine!
  5. Lou C

    Risers getting very hot

    That’s also possible. If you use the VP factory gaskets they are supposed to get spray on copper based sealer. I used Permatex Aviation on my Barr Marine aftermarket manifolds & elbows and no leaks at all. Had them off to do other work last year (steering actuator) and no sign of leaks anywhere...
  6. Lou C

    Risers getting very hot

    With the Volvo style exhaust it is a cold manifold system where the manifolds get full flow from the thermostat housing all the time. So they should not run hot if everything is working as designed. I have that same exhaust on my OMC Cobra and running temps are about 95-110 at idle and the...
  7. Lou C

    Can water get into oil from failed exhaust parts?

    Basically what you are doing is testing the internal cooling passages in the block, heads and intake manifold. So the hoses that go to the elbows or manifolds from the thermostat housing are removed then you take one hose and connect both sides of the stat housing, to it. Then you make up a way...
  8. Lou C

    Wonder if I should go IO again or go OB?

    The only way I see the pendulum swinging back to I/Os is if the EPA forces the abomination of the cat converter on OBs which will make them even bigger and heavier. Even then, there are still some very significant advantages of outboards: No bellows that can leak and let water in the boat and...
  9. Lou C

    Proper Castle Nut Installation

    I'm thinking the spindle might be drilled like that because some trailer companies used a long vs a short hub. I do think that for sure there should be a washer between the outer bearing race and the castle nut, to spread the preload out evenly. I've worked on a few trailers and even some old...
  10. Lou C

    2016 Mercruiser 6.2 ECT - long beep every few minutes???

    Unfortunately it's normal here, due to high humidity, damp climate, etc. Mold on north east facing house roofs and fences is a big problem, however, one thing that is very rare here, is wildfires. Just too damp & humid most years. If the boat sank or partially sank in salt water, the amount of...
  11. Lou C

    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    the old tech won’t die out Just look at the classic car hobby The nay sayers said 30 years ago carbs would disappear Go take a look at Holley’s website, how many different types of carbs are sold currently…it’s a LOT…. Everything from 2 bbls to twin 4 bbls and 3 deuces… I can get ANY part I need...
  12. Lou C

    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Better hope that none of the states get the bright idea of emissions equipment inspections on boats after a certain year. In NY your vehicle must have all of it in place & no check engine light to pass. No sniffer test but if you’re getting any CE codes no pass. If that comes to pass then lots a...
  13. Lou C

    Twin Merc. 6.2 Mags with Bravo 3 - EMCT Temperature Overheat Fault - Port side Manifolds (Only)

    Interesting read on owning a modern stern drive or inboard. As far as removing cats what is the legal liability for this? The biggest problem we have is that people running the EPA are not elected and there are no cost benefit analyses being done to justify forcing the manufacturers to install...
  14. Lou C

    Boat swamped, let's see if we can get it running...

    All's well that ends well as they used to say! Mine didn't get swamped but the day that the small hose behind the engine popped off the P/S cooler, it filled the bilge with salt water and sprayed it all over the place. So I changed the starter, alternator and reterminated all the starter wiring...
  15. Lou C

    in reference to that closed thread on bellows replacement....

    https://forums.iboats.com/threads/how-much-should-bellows-change-cost-central-ca.697082/ Price wise and what needs doing, it depends.... if you are replacing the bellows to avoid a failure, it hasn't leaked yet, why then replace the gimble bearing? Mine was last replaced in 2005, the bellows was...
  16. Lou C

    2016 Mercruiser 6.2 ECT - long beep every few minutes???

    That's very common here on Long Island where that boat came from. Constant humidity all winter long, everything is damp, attracts and holds dust and dirt, and that's how it gets that way. Any boat stored outside, even if covered will have this. It is a constant battle. I think I'm seeing a fair...
  17. Lou C

    New valve cover gaskets and still leaking V6 4.3

    Have you determined if it’s coming from the intake or valve cover gaskets. Believe it or not I’ve never had a leak from either on mine but the valve covers (tin not plastic) and intake gaskets are different on the older pre Vortec models. I’m wondering if the sealing surface of the plastic ones...
  18. Lou C

    2008 4.3 ltr. TKS diesels when turning off

    https://f01.justanswer.com/oldnewenglandmarine/3f890363-a520-451c-8769-5e7086a12959_Engine_Dieseling_or_Running_on.pdf Here it is
  19. Lou C

    2008 4.3 ltr. TKS diesels when turning off

    You might be able to find it, there was a Mercruiser TSB on this problem, can't recall what they advised to get it to stop, but I do know I never had this problem with my '88 OMC 4.3 with the Quadrajet carb in all the years I owned it. Might be unique to the carb Merc was using at the time. In...
  20. Lou C

    Low Compression in two cylinders and blowby

    HGs can blow in different ways, on mine I had a water leak into 2 cyls, not enough to hydrolock but enough to cause rough running due to water + corroded valve stems but the compression test results were close to normal. The important thing is to act on it quickly, get the water out and change...
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