|
| Author |
Message |
    
mike
New member
Username: pokie
Post Number: 1
Registered: 09-2009
| | Posted on Sunday, September 20, 2009 - 04:18 pm: | 
|
I have a 40hp tohatsu (40c).It started surging at higher speeds.I replaced fuel filter in tank and on motor,fuel line and connectors,fuel pump,cleaned carburetor,new ignition coil.Did not help.Checked compression top cylinder 126# bottom cylinder 131#.Checked exciter,pulser coil and CDI box.Exciter OHMS 261.9,cranking speed 226 dva,Ideling speed 222 dva,W.O.T. 153dva.Pulser,OHMS 40.2,cranking speed 9 dva,Ideling speed 13 dva,W.O.T. 53 dva.CDI cranking speed 160 dva,Ideling speed 130 dva,W.O.T. 87 dva Any Suggestion Thank You Pokie |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 963
Registered: 06-2007
| | Posted on Wednesday, September 23, 2009 - 11:31 am: |
|
Check your test values against what is found in your service manual. If they are within spec then you need to look at the fuel system. |
mike
New member
Username: pokie
Post Number: 2
Registered: 09-2009
| | Posted on Saturday, September 26, 2009 - 05:42 pm: |
|
I have a clymer outboard shop manual it only tells you OHMS and cranking speed volts(dva).Then it reads the engine may operate properly at one speed and misfire at another speed due to a faulty exciter coil.That is why I performed test on OHMS; cranking,ideling andW.O.T. volts(dva).When I seen the voltage drop on the exciter I though that might be the problam.I went to the local dealer the repair manual he had only told us OHMS and cranking volts.He said I might have something wrong with the reed vales.I was hopeing you could tell me if the test values were right or where I can find out if they are right.My tohatsu is a 1998 I forgot to tell you in the first E-mail.Thank you Mike |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 973
Registered: 06-2007
| | Posted on Monday, September 28, 2009 - 06:51 pm: |
|
You need to pick up a copy of th factory service manual from any Nissan or Tohatsu dealer. |
|
|
|
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 |
|
