Problem 2000 250 Ocean Pro..

SteveSC

Cadet
Joined
Jun 13, 2009
Messages
9
I bought a 2000 255CC Sea Pro about 2 yrs. ago with a 2000 250 Ocean Pro on it. From the day I bought it's had an idle problem...will run WOT to 1\5 throttle all day. Get down around 6 \ 8 mph down to idle speed and it wants to cut off.. Starts right back up but $%%% it's aggravating. I changed everything from the fuel rail - fuel lines from the tank back to carbs - changed bulb ( 3 times ) - plugs changed twice - checked the coil outs - power pack checks good - put a new non VRO fuel pump on - compression #s look good - pyrometer says the heads are the right temp - changed t-stats - new vac. lines - decarbed - have not had carbs rebuilt but they look good..........................................but it won't low speed or idle. Ideas..?

Also this boat is rated up to 400 hp. I bought it with the original 250 hp on it - it was probably sold new with the 250 on it to keep the price down.

Since I bought it the original lower unit crashed at 1\2 throttle - limped back in from 5 miles out. Spun a prop - spun another prop. Bought a Piranaha prop and no more prop problems. Back in July we were 43 miles offshore, had been 3\4 throttle for 2 hrs. - slowed down to get rigs ready to fish, as we throttled up to go the other 5 miles to our spot the new replacement lower unit imploded. Had to call BoatUS for a tow.

Could this boat be under powered and there's just too much torque on the lower end of this 250. The boat weighs in @ about 6300# loaded to go offshore. If I could figure out the lower end crashes I'd probably keep the motor and try to live with or continue trying to fix the idle issue. This a strong running outboard but I've lost my confidence in it and lack of confidence 60 miles out is not good. Any ideas on the lower unit \ prop issues. The 2nd new replacement lower unit is still in the box in the garage. I'd rather keep the motor and not spend the big $$$$ - what would you do..?
 

wilde1j

Vice Admiral
Joined
Apr 15, 2002
Messages
5,964
Re: Problem 2000 250 Ocean Pro..

Prop hubs, when failing in short time is usually caused by the hub getting too hot (exhaust gas temp too high). Has nothing to due with load. The prop you ended up with probably just tolerates the heat better.

Hard to guess why the LU's failed. Did you tear down the first one? What LU's did you use to replace the failed ones?

You could have saved a lot of time and money by proper diagnosis for the running issue, rather than the shotgun parts replacement deal. I would have done a proper clean/rebuild of the carbs as a first step. Get a gallon of carb cleaner, strip the carbs down and soak the bodies overnight and follow the OEM shop manual guidance for the rebuild. You say the "carbs look good" ... from the outside, BC that doesn't count.
 

Jayrock

Petty Officer 2nd Class
Joined
Dec 19, 2008
Messages
132
Re: Problem 2000 250 Ocean Pro..

The " El Cheapo " Lower units on eBay are mostly garbage. I second the above post. When I have Idle issues, It is almost always carb realated, And usually remedied by a good cleaning and Lync-N-Sync. Remeber, If your motor is not getting the proper fuel to idle, its probably not getting oil either.
 

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: Problem 2000 250 Ocean Pro..

carb low speed jet is your problem with idle..should have been the 1st thing you should have done. If your boat is rated for 400 horses..get 2 200 horse motors(maybe 2 175s)..then if 1 goes down you can still get back without a $$$$$ tow. and you will have enough horses to do the job...sell the 250...
.2 good used motors = about $6000 then subract about $3500 for your 250 and add $1000 labor and misc to install the twins..= $3500...2 motors confidence to go 60 miles out= priceless.
 
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