|
| Yamaha sterndrive 4.3 V6 OVERHEATING |
| Author |
Message |
    
Robert Page
New member
Username: page_2006
Post Number: 3
Registered: 06-2006
| | Posted on Friday, June 23, 2006 - 07:45 pm: | 
|
Ok - just joined this forum and Im having a heck of a time diagnosing the problem with my EBBTIDE boat with 4.3 Chevy V6 stern drive,
PROBLEM : Submerge lower unit in a 35 gallon bucket of water. Engine starts right up - but heats up to 190 within 5 minutes, And theres no stream of water peeing out the lower unit weep holes like it should I get just spitting of air .
WHAT IVE DONE :
Checked ALL belts ( tight )
New Impeller
New circulating pump
New Thermostat (even tried with no thermostat)
Checked Risers (fine)replaced gaskets
Checked all coolant lines for implosions
Flushed weep holes in lower unit with garden hose from the RISER ( nice flow )
Removed output hose from impeller pump and she's pumping.
Removed coolant hoses from both sides of power steering oil cooler and flushed it AND the hoses . Checked the screen on the cooler as well - all clear.
Circulating Pump is pumping.
Bypassed the impeller pump and ran a garden hose right to the thermostat housing - engine temp was NORMAL and weep holes in lower unit were weeping.
QUESTIONS :
Is my power steering oil cooler clogged ?
My thermostat housing has 3 pieces
the cover - the middle( that the therm sits in)
and another block that two houses connect and run to UNDER the risers.... could this be blocked ??
What are the symptoms when the impeller pump fails ?? Leakage ???
I noticed that the impeller pump pumps at different speeds.
Look guys - I wasnt that familiar with these stern drives but in the past week Ive had quite the crash course - any help at all will be appreciated . Rob from Plymouth Ma. |
sean lutot
New member
Username: srrglu
Post Number: 2
Registered: 05-2007
| | Posted on Wednesday, May 30, 2007 - 10:54 pm: |
|
I am in the same boat looking for answers. Something that I have seen in other posts all over the place is this. there is a line that comes in from the transom. If the line is cracked it will pull air and not allow the seawater pump to do its job. I am still at the stage of replacing the impeller on the seawater pump mmyself. let me know if you have a good line on parts for the 4.3. I am looking for parts now.
later. |
alanp
Visitor
| | Posted on Monday, October 13, 2008 - 04:31 pm: |
|
Check plastic thru hull fitting at the transom for the water line. I have one that is split therefore not picking up water. Also check mating surface between bellhousing and upper drive. Make sure oring has a good groove. |
Ken Nelson
Member
Username: captken
Post Number: 21
Registered: 07-2007
| | Posted on Monday, October 13, 2008 - 08:28 pm: |
|
Install a thru hull with a clamshell scupper somewhere easy to get to in the bilge. Attach your incoming suction line to it and you will end the suction problem from the outdrive. |
friendgril
New member
Username: friendgril
Post Number: 2
Registered: 12-2008
| | Posted on Wednesday, December 31, 2008 - 02:33 am: |
|
Brass air fittings
Now that is a lot of brass air fittings
http://www.liangdianup.com/subpages/airfitting_1.htm there is just about every
type
of air fitting that you could want. Wholesale prices too. I guess these could be
used as small water pipe fitting also. I
used some of the parts to make my babington wvo burner. |
|
|
|
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 |
|
