Boat problems

[bassangler]

Was cruising back to cedar ridge from the dam running 50, rpms dropped and speed dropped to 40. Limped it back to the ramp. Found that the #2 cylinder was getting no fire, swapped coil with one of the others that was working and still no fire so I replaced the power pack. Now I'm getting fire but boat will not get up on plain. Motor runs smooth in idle but when I go to take of it bogs down. Any help is appreciated! Boat is a 94 procraft with mercury 125. 

[dan hufferd]

I don't know a bunch about boat motors but I think that is the motor that shuts 2 cylinders off at lower rpm. I think they called it a 2+2. Maybe the problem is in the mechanism that does the shutting off of the cylinders. It sounds like the other two are never coming on. 

I hope this helps a little. I would like to fix it and put it on my boat.  

[Hammer time]

Could be fuel line or primer bulb, or possibly fuel pump.

[ramman123]

Look up fishingwrench  under the Lake Ozarks forum he is very knowledgeable 

 

[bassangler]

Will do thanks

 

[slab slinger]

Sounds like possible fuel pressure issues. But I would PM wrench and see what he thinks. 

[fishinwrench]

You need to have a stator output test.  Your switch box (it isn't called a "Power pack" on a Merc ) has a low speed and a high speed circuit, and so does the stator.  You are probably getting spark at idle but loosing it upon acceleration because the high speed circuit of the stator is out.   This is very common.

The switch box you replaced is probably fine.   

Look under the flywheel, if your stator is black then it has the dual circuit.   If it is red it has been updated.    I bet it's black.

[bassangler]

Okay thanks a lot for the information greatly appreciated! And the stator Was replaced last year that's why I assumed the switch pack would have been my problem. But do you think the stator could be bad again.

[fishinwrench]

If it is a black one, absolutely.  Originally your motor came with the black 4wire stator. That stator was determined to be a POS and the upgrade is a red (kit) stator.  Pretty pricey but without it you'll be plagued with repeated failures.

  As always, Mercury's M.O. is to hurry up and toss engines out there on the market (get them sold) THEN worry about improvements as the failures occur.  Sometimes they happen during the warranty period and they have to make it right.  Other times they happen later and YOU get to pay for it.   Shitty way to do business but that's how they roll.  

Nevertheless you need to have the stator output test done before doing anything else.  Troubleshooting in the proper sequence is the only way to fix it right the first time.