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  1. K

    2003 Mercruiser 4.3 clogged manifold.

    Hello guys, I just bought a used boat with 60hours and a 4.3 v6 (2003) obviously it has been sitting all of its life, as I have seen demo boats with more hours than this. I took it out on the water, and noticed one of the manifolds was way hotter than the other, and when i turned it off, the...
  2. K

    1997 Volvo Penta 3.0 Flywheel Bell Housing gasket - Do I need one or not?

    Anybody know where I can buy this part online ? Cant find it anywhere other than europe volvo penta store Number #3 on the link below: Volvo Penta Exploded view / schematic Flywheel Housing and Rear Mounts 3.0GSMHUB, 3.0GSPHUB - MarinePartsEurope.com Some websites mark it as obsolete, does...
  3. K

    Engine Knock 3.0 Volvo penta

    So, I just fixed an issue where i had water in the oil, by getting a new manifold, now that i put it all together, engine runs and starts without a hiccup, but there is a very loud engine knocking sound, it sounds pretty brutal in person, to the point that you are afraid to even give it any...
  4. K

    EXHAUST RISER RESTRICTOR PLATE 3.0 Volvo Penta

    Does this part really need to be there ? I am putting my engine back together, and the new manifold i got came with only one gasket. This is the part im talking about, it restricts waterflow, maybe to keep the engine either hotter or cooler. VOLVO PENTA 3853628 EXHAUST RISER RESTRICTOR PLATE...
  5. K

    Volvo Penta 3.0 Oil on spark plugs

    I recently replaced the gaskets and resurfaced the manifold/riser/valve cover gasket, and removed the exhaust flapper, that was jammed, and causing water to rush back into the engine. Now my water in oil issue, seems to be fixed, boat runs fantastic, but after about a 30min to 1 hour ride...
  6. K

    1997 Volvo Penta 3.0 Exhaust riser flap causing Milky Oil?

    Hello iBoats, Does anyone know if this serves a purpose ? it was just laying in my exhaust tube, not anchored to anything, just chilling, probably blocking the flow of water. My guess is that it is supposed to be seated in where it actually flaps, but it wasn't.
  7. K

    1997 Volvo Penta SX Cobra - Gasket or Silicon ?

    Hello! I just bought this 1997 Four Winns I/O, and noticed the exhaust bellow was filled with rips, and the U-Joint bellow started dry-rotting. So I decided to change them. It seems the ujoint bellow was changed before, and the previous owner made a gasket out of white silicone type material...
  8. K

    Boat never starts without full throttle pumping, doesn't stay idle until 140F+

    I have a 1999 Volvo Penta 3.0GS Carb and this is driving me nuts. * My Spark plugs always get full of dark black carbon around the edges and sometimes inside of them. * Never starts without full throttle + pumping motion * Will never stay idle unless engine is warmed up to 140ish F, then it...
  9. K

    1999 Volvo penta 3.0 gs oily water mix between valve cover gasket and manifold gasket

    Running the boat for about 3 hours, would make a oily water puddle mixture between valve cover gasket and manifold gasket (Between carb and valve cover) Usually puddles around bolts and the pockets on top of the head. Is this normal? Engine is running fine, spark plugs are pink colored, no...
  10. K

    1999 3.0 Volvo Penta Exhaust/Manifold Leak

    I just bought a boat, and spark plugs kept fouling out, it runs great at high rpm's but it kept bogging out at low rpms. I noticed a bit of smoke coming out from manifold, so i decided to take it apart, here are the results. What do you guys think ?
  11. K

    Oil change question

    Mercruiser 5.7 Liter 350. I took "most" of the oil out using a junky walmart oil pump, pumped it till none came out anymore. But it felt like only 2 quarts came out of the engine. I added 4 quarts of straight 30W oil, and now the oil level shows full on the dipstick, while on trailer. Should...
  12. K

    Bravo 3 Outdrive noise when turning left right [Video]

    Bravo 3 Outdrive noise when turning left right, and driving with outdrive up Because of this issue, I took it to a mechanic. He replaced the gimbal bearing, U-joints, and seal kit on the outdrive (+cleaned everything in the upper outdrive unit). I took it for a test drive, same noise...
  13. K

    Outdrive grinding sound when turning left and right (after servicing)

    I took the boat to a mechanic, and he replaced the gimbal bearing, u-joints, bellows, and seal kit on outdrive + cleaned the gears in the outdrive + new outdrive oil & new trim sender units. The whole point of doing this service, is to get rid of the engine roar when turning left and right, but...
  14. K

    Mechanic trying to steal/swap my bravo 3

    I have a bravo 3 outdrive that needed servicing, I brought it to a local shop, that seemed a little shady. He told me when i brought it in, that it looked in good shape, and usually bravo's this old are usually in worse shape. Now he called me, telling me that I have a crack in my outdrive...
  15. K

    Do these u-joints need to be changed - Bravo III [PIC]

    1995 Mercruiser Bravo 3 When I turn right and left, my outdrive does the classic grinding noise. I took out the outdrive, there was some water in the u-joint bellow, and the u-joints where covered in water. The gimbal bearing seemed brand new, smooth & no play. I changed it anyway. So, it...
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