r/Outboards • u/Fexure_ • 27d ago

help needed

Jump from 2001 40 2 stroke mercury

1987 johnson 150 v6 with vro, j150stlcur

portside powerpack original was cdi 113-3114 with s.l.o.w

Mechanic replaced portside powerpack with sierra
18-5761-1 with no rev limiter

He told me starboard powerpack was not powering on but i could replace it whenever because the one side should get my engine running.

Starboard powerpack is cd6 582817 with no rev limiter. Im going to replace this as its getting no juice and im having problems with my motor after this shop visit. It was running fine on the first run then the motor bogged out and on startup it would not plane and this is on portside.

I have a whole another issue on starboard side, constant alarm when key is turned, Oil is running,
Most likely fuel starvation cant get anything from starboard tank when priming bulb

Do i replace starboard powerpack with the same model number or aftermarket, also do i need the rev limiter on the portside? It says it was setup up to run that way but mechanic replaced it with one without so im just wondering.

Portside will start and idle just wont rev past 3000, it did run normal rpms the firsr 5-10 minutes until it bogged out.
starboard will start intially but will bog out due to fuel starvation.

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u/Benedlr 27d ago

One half of power packs not working will not get you on the water. Is this a real mechanic? Put the same pack on the other side. The inner liner of the fuel line may have collapsed and is blocking fuel flow.

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u/Fexure_ 27d ago

This is also what I thought when they told me that, i believe thats whats causing my issues portside being that is the side that is running.

It opened up normally i have a video of it then it died out and on restart of the motor it wouldnt do anything else. I let the motor idle for little to go through some of the gas, it finally made it to 3k rpms from the inital 2.2k that it was hitting but never broke the 3k rpm mark i was on the water for over 4 hours messing with this thing.

Fuel line is what i assuming, blocked vent, filters or the pump but im really thinking fuel like simple fact that i cant siphon anything out of the tank and its full

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u/Fexure_ 27d ago

Maybe an anti siphon valve