|
| Merc. 485 burning anti-freeze |
| Author |
Message |
   
scott fummerton
New member Username: scottyfum
Post Number: 1 Registered: 05-2008
| | Posted on Sunday, May 04, 2008 - 10:08 pm: |
|
Hi guys, I have been an avid reader on this forum for some time now but today I decided to join. I have had an ongoing problem with my boat last year and I am going to attempt to fix it this year. I have a 1983 merc. 485 with an enclosed cooling system. Anyway the problem I am having is the boat will start and run great when cold, then after I shut it off for about an hour and go to restart it it takes a very long time to start and it smokes for about 10 seconds then it's fine. The smoke is anti freeze and my level goes down but very slow. I was going to take the head off and have a look at it but I figured someone might have had this before. Three years ago I rebuilt the engine. I put new crank and conecting rod bearings,piston rings and all new gaskets. The only thing I noticed was a small crack internal to the exhaust manifold. I could not find a manifold at the time so I just reinstalled it. It wasn't burning the coolent it burns now. It has gotten worse every year. Any help would be greatly appreciated. Thanks. Scott |
   
Guy Gaspar
Senior Member Username: guyjg
Post Number: 1969 Registered: 08-2006
| | Posted on Tuesday, May 06, 2008 - 09:42 am: |
|
Welcome Scott: "I could not find a manifold at the time so I just reinstalled it. It wasn't burning the coolent it burns now." I should have invested in 470 manifolds when they were available..boy could I make money from it! They are available. See below. How fat is your wallet? http://www.perfprotech.com/store/product/Mercruiser-470-Replacement-Exhaust-Mani fold,24752.aspx http://www.maxrules.com/fixmercruisermanifold.html http://www.shipstore.com/SS/HTML/MERC/MERC816219A4.html |
   
scott fummerton
New member Username: scottyfum
Post Number: 2 Registered: 05-2008
| | Posted on Tuesday, May 06, 2008 - 07:38 pm: |
|
So are you saying the manifold is most likely my problem. |
   
Todd Moore
Advanced Member Username: concritter
Post Number: 143 Registered: 12-2007
| | Posted on Tuesday, May 06, 2008 - 08:55 pm: |
|
Yes,that is correct.Manifold should be the culprit.You stated it leaked for 3 years, but not like it is now.My guess is you have a slight crack that is not opening until you it starts to get hot.At that point you are burning it but so slow you do not see it so much.After shutdown it leaks to the exhaust and sits there waiting for the 1 hour later start to make smoke.....Todd |
   
scott fummerton
New member Username: scottyfum
Post Number: 3 Registered: 05-2008
| | Posted on Tuesday, May 06, 2008 - 11:33 pm: |
|
Thanks guys. |
|
|
|
Product Categories |
| Engine Parts · By Brand |
| Engine Manuals · By Brand |
| Books |
| General Repair and Maint. |
| Care and Repair |
| · Adhesive and Sealants |
| · Bottom Cleaners |
| · Cleaners Wax and Polish |
| · Mops Brushes and Sponges |
| Covers and Tops |
| · Bimini Tops · Hardware |
| · Cover Accessories |
| · Motor Covers |
| · Universal Boat Covers |
| Electronics |
| · Gauges and Compasses |
| · Mounts and Accessories |
| Electrical |
| · Batteries & Chargers |
| · Battery Accessories |
| · Dockside Electrical |
| · Electrical Terminals |
| · Electrical Wire, Cable |
| · Fuses, Fuse Holders |
| · Switches |
| · Wire Ties, Clips, Tape |
| Fuel Systems |
| · Fuel Tanks |
| · Fittings, Fills, Vents |
| · Hose & Primer Bulbs |
| · Filters, Senders, Caps |
| Hardware |
| · Deck Cabin Hardware |
| · Molding and Rub Rails |
| · Rails and Fittings |
| · Snaps Shackles and Hooks |
| · Windshield Hardware |
| Lighting |
| · Cabin Lights · Light Bulbs |
| · Navigation Light Parts |
| · Navigation Lights |
| · Spotlights · Parts |
| Mooring and Dock |
| · Boat Fenders · Boat Hooks |
| · Buoys and Markers |
| · Deck Cleats · Dock Edging |
| · Dock Parts and De-Icers |
| · Fender Covers and Holders |
| · Keelshield / Toon-Tectors |
| · Ladders and Platforms |
| Prop / Trim /
Transom |
| · Jack Plates, Wedges |
| · Mounting Brackets |
| · Outboard Stands |
| · Trim Tabs, Stablizers |
| · Prop Nuts, Locks, Pins |
| · Propellers · Wrenches |
| Pumps |
| · Aerator Pumps |
| · Bilge Pumps |
| · Drain Plugs and Tubes |
| · Hose · Through Hull Fittings |
| Rope and Cordage |
| · Anchor Line · Dock Line |
| · Fender Line · Bulk Rope |
| · Shock Cord and Bungee |
| Safety Products |
| · Horns Bells and Whistles |
| · Mirrors |
| · Vents Blowers and Hose |
| Sanitation |
| · Fresh Water Pumps |
| · Marine Toilets |
| · Sanitation Chemicals |
| · Sanitation Pumps/Hose |
| · Water/Waste System Parts |
| Seating |
| · Deck Chairs and Tables |
| · Fishing Seats |
| · Lounge Seats |
| · Pontoon Furniture |
| · Seat Bases and Pedestals |
| Steering / Control |
| · Control
Boxes |
| · Control
Cables |
| · Hydraulic
Steering |
| · Mechanical
Steering |
| · Rigging · Steering
Wheels |
| Tools / Shop Supplies |
| · Lubricants & Additives |
| · Motor Flushers |
| · Tools & Test Equipment |
| Trailering |
| · Boat Guides/Motor Support |
| · Hitches Balls Couplers |
| · Rollers Brackets Springs |
| · Tires Wheels and Carriers |
| · Trailer Hubs & Bearings |
| · Trailer Jacks |
| · Trailer Wiring and Lighting |
| · Winches Straps Tie Downs |
| Manufacturer List |
|