Mercury 225 bottom end power

[jsr21]

Hi..I have a 94 merc 225 that i just put on my 18foot maxum. First time out tonite..it has good mid to upper rpm power, but outta the hole it stumbles and shakes and pulls like crap. Seems once the boat gets planed and around 3000rpm it really comes alive. ONCE tonite it did run clean from a dead take off and it pulled really well out of the hole. I bought this motor from Kentucky and i live in Alberta canada...does it need to be rejetted for altitude? Thx

 

[jsr21]

Re: Mercury 225 bottom end power

oops..btw..motor has great compression across the board.

 

[LubeDude]

Re: Mercury 225 bottom end power

How much elevation change are we talking about, what are your WOT RPMs, what pitch prop are you running now? Need more info.

 

[jsr21]

Re: Mercury 225 bottom end power

LOL..I found it...One of the electrical harnesses that plugs into the coil?(the box the spark plug wire comes out of)was disconnected....I plugged it back together and wow! what a monster...thx all....(would they have disconnected those to do a compression test and forgot to hook one back up?)

 

[LubeDude]

Re: Mercury 225 bottom end power

Not sure, glad you found it though! If only everything was that easy.