|
| Author |
Message |
    
Thomas Glenn Epps
Member
Username: spivey2389
Post Number: 16
Registered: 06-2009
| | Posted on Saturday, July 04, 2009 - 09:58 am: | 
|
My 175 johnson outboard is running hot, the impellar was replaced and has about 20 hrs. on it, the water coming out of the back seems to get hot then normal, kinda fluctuating what could be the problem i did check thermos and they are good, any suggestions?????????????? |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 7584
Registered: 02-2001
| | Posted on Saturday, July 04, 2009 - 10:08 am: |
|
Possibilities are:
Custom O Ring on bottom of water pump housing slipped out slightly, allowing pump to draw air.
Water tube clipped side of pump grommet, folding it over somewhat, creating a shutoff valve.
Deflectors, if they exist (you don't list the engine year) may be swelled, as follows:
(Water Deflectors)
(J. Reeves)
Water deflectors are actually lengths of 3/8" outside diameter rubber hose, installed between the top cylinder and any cylinder beneath it, and also between the bottom cylinder and the block. The purpose of the deflectors is to have the water follow a definite path around the cylinder walls. Unfortunately the deflectors between the cylinders will at times swell sideways due to either a previous bad overheating problem, or simply due to age and salt corrosion. This causes a water flow restriction which usually allows the water to cool sufficently at low rpms but not at the higher rpms.
This hose material can be purchased reasonably at any automotive parts type store if you care to make your own, or you can purchase individual deflectors at any Evinrude/Johnson dealership at a somewhat higher cost.
Removing and installing them can be a hassle at times, but not always. I use a sharply pointed scribe with about 1/4" of the tip bent at a right angle whereas I can reach in, jab the tip sideways into the rubber, then yank it out. It's necessary to clean the seating surfaces where the ruber contacts the block with a small rat tail file to eliminate salt deposits etc. When installing the new rubber deflector, coat the deflector and the metal surfaces with WD40 which will act as lubrication to allow it to go in as easily as possible.
Make sure that you insert something into that deflector area before cutting and installing the deflectors if you make your own so that you will be certain that they are the right length and also that they will be seated properly. Usually a very small amount will be left extending about the block sealing area..... simply cut the excess off with a single edge razor blade.
Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay store at:
http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store |
Thomas Glenn Epps
Member
Username: spivey2389
Post Number: 17
Registered: 06-2009
| | Posted on Saturday, July 04, 2009 - 10:29 am: |
|
2005 |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 7586
Registered: 02-2001
| | Posted on Saturday, July 04, 2009 - 10:33 am: |
|
Being retired prior to that year (2005), I'm not sure deflectors exist but I think they do not. |
Thomas Glenn Epps
Member
Username: spivey2389
Post Number: 18
Registered: 06-2009
| | Posted on Saturday, July 04, 2009 - 10:53 am: |
|
Thanks joe, will probably go out and drop lower unit and check the o-ring and pump grommet, this is pretty weird because last week ran the outboard and temps did not go over 139 with strong water pressure and now they were approaching 160 and the stream seems a little weeker i did check the intakes. I put a temp guage on it last night because my tach/system check guage stopped working, well the tach works but none of the lights come on, so i figured getting a temp guage would help me to monitor that part of the outboard. Want to get a water pressure also, And is there a certain pressure your outboard is supposed to have, to let you know the impellar is good? |
Thomas Glenn Epps
Member
Username: spivey2389
Post Number: 19
Registered: 06-2009
| | Posted on Saturday, July 04, 2009 - 12:00 pm: |
|
Another question just removed top plug first to drain lower unit oil and there was pressure on it enough to blow a small amount of oil out, and as i began to drain noticed that the oil is pretty milky |
|
|
|
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 |
|
