No power to ignition (need help please)

Shawboat

Cadet
Joined
Nov 3, 2020
Messages
9
So here Iam again,my 2007 bay liner discovery 192 worked and stated fine all season, i hauled It home yesterday and pressure washed everything including in and around the engine bay which has a 3.0l merc today i went to start it and its got no power, everything else works and battery’s are ful charge, i checked the fuse and all are good there is a 50amp fuse on the centre of the engine with a button i did press that today figuring it had something to do with my tach as i was having trouble with it ereacticaly bouncing from 1000 to 7000 , anyhow there’s no power and no dash lights and no bussing with i turn the key to On position < i think i blew a fuse or something , but not sure and i want to go fishing tomorrow with u buddy !!! There’s gotta be a simple solution
 

Shawboat

Cadet
Joined
Nov 3, 2020
Messages
9
Found the problem it was the 50amp fuse ,what is this for?
 

Attachments

  • 0DBEFE6D-A7DA-44A3-8ECA-9CCFDC06D1BB.jpeg
    0DBEFE6D-A7DA-44A3-8ECA-9CCFDC06D1BB.jpeg
    1.5 MB · Views: 11

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
48,223
that is a circuit breaker, not a fuse and that is what powers the engine and gauges and everything powered off the key switch.
 

Shawboat

Cadet
Joined
Nov 3, 2020
Messages
9
Oh ok right on, what would cause that to trip ? Washing it ? Would that be the problem with my tach bouncing around like a wild man ?
 

Lou C

Supreme Mariner
Joined
Nov 10, 2002
Messages
12,208
Don’t know the answer to your specific question but note to self DO NOT USE A PRESSURE WASHER to clean anything in the engine compartment! It forces water in places where it should not be! You might have to unplug wiring connectors & carefully dry everything out. You also don’t want water in the starter, alternator, distributor or carb/TBI if equipped.
The only thing to use a pressure washer on for boats is the bottom and (very carefully) outdrive keep the high pressure water away from any rubber parts.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
48,223
Oh ok right on, what would cause that to trip ? Washing it ? Would that be the problem with my tach bouncing around like a wild man ?
yes, pressure washing your engine put water in areas its not supposed to be.
 
Top