3.0 GM merc problems

[dado78]

Hey guys how its been. Question that going eat my internet if i don't find solution soon.
July 4th on the water boat had some trouble starting but did start, 6-7 8 july boat runs fine no problem.I made plan going fishing at 5 am, night before i prep the boat all fishing gear , make sure it runs, went to ramp this morning , dead. I found out starter got blown, sent to west marine got new starter installed now boat will turn and run if i hold a key. Once key is release it shuts off.
Also looks like my shifting cable getting stuck to since it will pick the speed up like crazy when i was on water those days.

Any help will be appreciated..
3.0 GM merc new alternator rebuild water pump, new hoses cables batteries. Starting to get me going crazy. Runs days before and now it will crack but will cut off.

 

[alldodge]

I found out starter got blown, sent to west marine got new starter installed now boat will turn and run if i hold a key. Once key is release it shuts off.

Don't know the year or serial number but going to guess you left the wire off the inboard side on the starter

 

[dado78]

1996 wellcraft eclipse 18sx 3.0 LS all wires connected. Even got friend so double checking, also checked the carb on getting fuel all good but for some reason wont stay running will start checking again today .

 

[alldodge]

Check these wires

 

[dado78]

Jut picked up my rebuild carb from NC and install , and engine doing the same. Will run if i hold the key in run position as soon i left off it will **** off..
Wandering if this could be a Relay above starter or those safety fuses going bad. No idea where to look next.
Thanks

 

[Scott Danforth]

your ignition issues have nothing to do with your carb

check if you have voltage at the I terminal at the key switch. if yes, check if you have power at the coil or the carb on the purple wire.

 

[dado78]

Ok problem solved. Change oil pressure sending unit, not that, Changed relay above starter not that.. so i start looking for rest of problems. New kill switch new ignition and it looks ignition fail i bypass boat started right a way..
thanks for help guys

 

[dado78]

So here its update as 23:05

So after install of rebuild carb, engine starts but will still cut off as soon the key is left off. So i came back here to check for the rest of problems. Someone mention oil sender unit fail, and relay i went to west marine, got all new stuff , install on engine same thing again. Start playing with multimeter around and found out my ignition switch fail. Trip again to west marine get new 3 way switch. Hook it up boat starts and runs perfectly but starter will not disengaged, so here we go again..
Check fuses all good, check all wiring on starter all good, start playing around with new ignition switch all good. So i pull starter off, jump the ground and strater will not disengaged , so i pull my kill switch and who ever wire it up had wires on constant power to starter.. played little bit around found right spots for it and starter disengaged as soon u start engine.Run the engine for 15 min and it runs perfectly without problems..
Just wanna say take your time and ask around. Nothing that people build cant be fixed.

Thanks Guys on here and happy boating ...

 

[alldodge]

Post 4
Check the location of the wires, make sure they are in the right spot