1994 Mariner 175 Magnum
OD167689
Friends New Used Boat
I have only Evinrude and Yamaha experience and need some help
Motor is on a Skeeter 18ft
We took it out this spring and ran it.. got on plane a little slower then i expected but ran ok... got mid 60's out of it and 5900 RPM
He took it out over the weekend here and it has some issues now..
He said...
Unloaded it..
Started right up..
Got on plane with him and his old lady kind of sluggish..
Ran around for about 5-10 min
Idled and looked at houses for a bit
Went back to get on plane and motor wont go over 2200 rpm..
I seen a video of it...
From idle in gear goes full throttle and it revs to 2200 and just slowly falls off down to almost idle... not really a lot of miss or anything just falls off...
Revs up in neutral no problem
but wont under load
I went over yesterday with the muffs and checked somethings..
Started Ok
Fuel Pressure with key switch on is 37-39psi
Fuel Pressure running is about same
All cylinders with 10 psi of each other
Plugs are ok...
Spark to all cylinders..
Checked battery 12.7 not running
12.5 running??
So no charging voltage
Disconnect Stator wires from Blocks and Ohm'd it out.. i think i did it right positive lead to wire/ground to block
R/W 114
BL/W 3900
R 112
BL 4000
Stator was luke warm
Didn't test the DVA Or Trigger..
With no manual and no real older Merc experience i need some help
I know theres more fuel related things to look into and electrical testing
Just need Some friendly direction