2005 225 merc optimax wont start??

**baja200merk** · 08-22-2005, 09:51 AM

its my uncles motor hes got it on a 25ft whaler all of a sudden will crank all day but will not start? could it be low voltage ? fuse some where? waterseperator?

i dono the tricks to this DI crap!
THANKS IN ADVANCE!!!
kevin

**baja200merk** · 08-22-2005, 02:10 PM

ttt???

**1BadAction** · 08-22-2005, 02:17 PM

killswitch. fuse under cowl.

**baja200merk** · 08-22-2005, 03:16 PM

thanks! will check it

**baja200merk** · 08-22-2005, 04:47 PM

fuses looked good... im thinkin bad fuel... it kickes and the starter jumps off the fly wheel but it will not start... im going to drain the fuel out of the pump and replace the water seperator... then im goin to run it out of a fresh 5 gal tank of high test.

thanks
kevin

**opti** · 08-22-2005, 08:08 PM

Baja.... I know this sounds stupid but what battery is being used for the cranking battery Those motors need a mininum of 800 cca and 1000 mca if battery is not up to snuff I've seen them do just what you are desribing not volts to turn on ecm run all other components also does the high pressure pump run when key is turn on could also be th main power relay not turning on.......OPTI

**baja200merk** · 08-22-2005, 08:31 PM

i herd that the voltage could be a problem so i hooked a jumper pack up to the 1000cca battery that was in there... he might have some bad gass in there too... gonna switch out the water seperator and run fresh fuel through it... will try to check them...

im like illiterate when it comes to this DI stuff...
thanks
kevin