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lee boswell
New member
Username: leebob
Post Number: 1
Registered: 07-2009
| | Posted on Sunday, July 19, 2009 - 11:45 pm: | 
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DOES anyone have any ideals why sitting in yard hooked to the water motor starts right up runs good put it in lake it wont start. |
Joe Reeves
Senior Member
Username: joereeves
Post Number: 7697
Registered: 02-2001
| | Posted on Sunday, July 19, 2009 - 11:50 pm: |
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(Engine Won't Start or Hard Starting In Water)
(Joe Reeves)
The Evinrude and Johnson engines, starting in 1973, have what is called Magneto Capacitance Discharge ignition, self contained, not dependent on battery voltage. The engine must turn over at least 300 rpms in order for the flywheel magnets rotating past the stator ignition generating coils to supply approximately 300v AC to the powerpack(s), which in turn is needed to supply power to the coils etc etc (spark).
In the water, exhaust back pressure is encountered due to the fact that the exhaust housing (housing between the powerhead and the lower unit) is filled with water. This would drag down the needed rpms, affecting ignition.
Normally the clue to this type problem is that the engine starts fine on a flushette (hose), but is very difficult to start when in the water.
Should this be the case, check the battery, clean and tighten all conections (use a wrench or pliers, not your fingers). Any cable that gets overly warm or hot indicates either a loose, or tight but dirty, or internally corroded cable. And of course check the starter itself.
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 |
Morten Ringvold
Senior Member
Username: haffiman37
Post Number: 3962
Registered: 04-2006
| | Posted on Sunday, July 19, 2009 - 11:57 pm: |
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Double check that the two exhaust relief holes at the back of the leg are not under water. This is quite a vulnerable point on the 3-cylinder engines. |
lee boswell
New member
Username: leebob
Post Number: 2
Registered: 07-2009
| | Posted on Monday, July 20, 2009 - 12:06 am: |
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Thanks Joe Ill check that out good to know where to find parts Ill be in touch. |
lee boswell
New member
Username: leebob
Post Number: 3
Registered: 07-2009
| | Posted on Monday, July 20, 2009 - 12:09 am: |
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Already checked exhaust holes but thanks. |
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