No Power to Engine - UPDATE

the issue was a faulty isolator and the batteries was not holding a charge, all good now and motor started first kick without the choke and seemed to have more power with new batteries, thanks to everyone especially wifecallsmegrumpy 



Hi Guys my Johnson 140HP 4 stoke aka Suzuki has lost power to the ignigtion and to the tilt/trim, power to the accesories is OK, I've check every fuse I can find including the one's in pic located in the motor and the someone has suggested the Power Harness Fuse, can some point me in the right direction ( or post a pic ) where this fuse could be located ? 






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Piggy's picture

Posts: 519

Date Joined: 24/08/12

where you located?

Wed, 2022-09-21 14:58

Where are you located? If your near Southern River I can help.

Do you have 12v at your engine. From the main battery lead?


I go boating not fishing

Posts: 955

Date Joined: 24/11/09

 NOR  and no 12V on the Red &

Wed, 2022-09-21 15:10


NOR  and no 12V on the Red & Grey/White cable with battery switch on 1, 2 or both and both batteries 12.26v which thought was a bit weird both batteries having the same voltage ?

Posts: 1084

Date Joined: 21/05/12

did u check that big relay

Wed, 2022-09-21 15:55

did u check that big relay looking fuse with 60 on it?  use a multimeter  - they can blow and u wont see it

Posts: 955

Date Joined: 24/11/09

 Yep checked both 60A fuses

Wed, 2022-09-21 16:13


Yep checked both 60A fuses with multimeter and both good

anypuddle's picture

Posts: 594

Date Joined: 22/01/12

 Neutral kill switch.

Wed, 2022-09-21 16:31

 Neutral kill switch. Starboard side.


Anywhere anytime

Posts: 6

Date Joined: 24/03/10

I've had similar problems

Wed, 2022-09-21 19:56

 I've had simialr problems a few years ago...2 x faulty 'in gear' protection switch (in the control box) and 1 x loose connection in the battery isolator switch.

scano's picture

Posts: 1245

Date Joined: 31/05/07

Those wires with the white cloth like shielding on them

Thu, 2022-09-22 06:48

Seem to get excessively hot on Johnson / Suzuki 140's. In particular I have seen the plastic connectors half melted with heat. Might be worthwhile checking those for good connection. There are 3 wires much the same from memory. Due to the level of heat the wiring sometimes goes a bit black and won't take solder either (if you have to replace the connector) so some of those 240v electricians wire termination plugs work well in place of the factory connector plug