Recent content by 351 OMC

  1. 3

    Saltwater in transmission

    Have a 1999 Sportcraft 251 with a 5.7 inboard and velvet drive transmission. Noticed slipping and found milk on the dipstick. Found the oil cooler had been letting water into trans and trans oil out the exhaust. Don't really know how long this has been going on. I filled the trans with oil to...
  2. 3

    Bad Coil?

    Have a 2000 5.7 mercruiser inboard with a 2 barrel carb. Owned the boat for one year with no major problems. Running 30 min at 3500 rpm the eng abruptly went to idle. Looking around I found a stripped post and loose wire on the neg side of the coil. Coil was HOT! I cooled the coil off with ice...
  3. 3

    Sea Star Steering Rebuild

    Have a sea star model BA 125-7ATM (about 7 yrs old). It's seeping and I have pulled it out to inspect it and see if it can be rebuilt. Is there a site that has a schematic/instructions since I can not figure out how to get into it? The rebuild kit is about $90 and a new cylinder cost about $500...
  4. 3

    Shaft Alignment???

    Have a 2000 Sport Craft Inboard 252. I just finished a carb rebuild and noticed the forward left engine mount was loose so I tightened it up and thought I'd check the others. Back left was tight, front right was not as loose as left but loose, back right was very loose so I tightened them all...
  5. 3

    Air Flows Backwards While Atempting Start

    I think we may have this answered but wanted to see if I could confirm the thought and maybe find a solution other than what I am thinking. I have a 1999 5.7 Mercruiser Inboard. Last Sept took on a lot of water due to rough seas and the bilge going out and never knowing it until getting back to...
  6. 3

    Inboard Shaft Seal

    Bought the 2000 27' Sport Craft Inboard last Aug. Noticed some water seeping out of the seal where the shaft comes thru the hull. Also noticed some water coming up thru the shaft on the rudder when in the water. Are these pretty easy fixes or do they require special tools and skills? My...
  7. 3

    Fresh Water Cooling System

    Recently bought a 2000 Sport Craft with a 5.7L Carb MIE SN Ol392532 and it has fresh water cooling on it. It has run in salt water for 600 hours and never had the manifolds changed. In my last I/O the parts guy said to change the manifolds every 4 years because it was raw water cooled. I know...
  8. 3

    Inboard Pwr Steering leaking

    Have a 2000 Sport Craft 252 Inboard with a 5.7 engine. Owned the boat 1 month and had to add half conatiner of fluid to system. Fluid goes in the steering column and the actuator is just above the rudder and has fluid all around it. The Merc book covers engine mounted power steering but not this...
  9. 3

    What's The Engine Number?

    I just bought a Sport Craft 252 Inboard and it has a 5.7 250 HP, SN 0L392532 Mercruiser and have no info with boat. I bought a Clymer Inboard /Transmission Repair Book (which I don't like, any better manual suggestions would be appreciated) but they list the engines in MIE 233 260 etc... Which...
  10. 3

    Lots of exhaust

    Just bought a 2000 Sport Craft IB with a 350 Mercruiser. Never had an IB and there seems to be a lot, maybe too much, exhaust coming out and swirling into the boat. Color of the exhaust is a light whitish. After a day on the water there will be some black on the stern under the swim deck and...
  11. 3

    Taking on water

    Bought a 2000 Sport Craft IB this weekend. Has 4 through hull fittings: 2 live wells, eng cooling, head, and the shaft coming in. Boat is taking o water somewhere. I did a quick check but saw no leaks. Is there a method for checking these out of the water, ie water hose or is the only way when...
  12. 3

    Ignition CB Trips

    Have a 2000 350 Mercruiser Inboard. Just bought the boat. Went out 11 miles on Sat and stopped several times in route. Left and on the way back after running at 3500 rpm (about 45 minutes) the engine coughed twice and shut down. The ignition CB was popped so I reset it and turned the key on and...
  13. 3

    Engine Shuts Down

    Have a 2000 350 Mercruiser Inboard. Just bought the boat. Went out 11 miles on Sat and stopped several times in route. Left and on the way back after running at 3500 rpm (about 45 minutes) the engine coughed twice and shut down. The ignition CB was popped so I reset it and turned the key on and...
  14. 3

    Fresh water problem

    Hi, I have a 1994 258 Vista with a 351 OMC, I/O Cobra outdrive. When I turn on the fresh water the system starts pumping but will not pressurize. While on the rack I heard water pouring out of the exhaust on the outdrive (engine not running). I turned the fresh water switch off and the water...
  15. 3

    Water Temp

    I have a 1994 351 omc, efi, I/O with a Cobra SX outdrive. The impellor is mounted on the bottom right side of the engine trust me on this, it's NOT in the outdrive). I bought the boat 5 years ago and have never replaced the impellor until last year (saltwater use). When I got the boat back from...
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