Very little power in boat

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

I have an 07' B52V. It has a 330 hp PCM engine in it, but will barely pull me up skiing. It will only run about 30mph top speed, and with the ballasts full and a couple people in the boat it won't even plane out. Any ideas or suggestions what might be wrong with it? Prop? Throttle cable? TPS?

Thanks

slidin_out · Soul Rider Joined: 05 Mar 2010 Posts: 353 City: Pearl

need to pull the anchor up before you ride

9DROZD · Outlaw Joined: 21 Apr 2010 Posts: 114

Whens the last time the fuel filter was changed out.

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

not sure on the fuel filter. I just got the boat. The guy before me let it freeze and it has a new engine in it. I would think they put a new one in, but they probably cut every corner they could with the new engine

STANG KILLA SS · Posted: Jul 05, 2011 7:27 pm Post subject:

probly put a 250 hp back in it.

what prop is on it?

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

yeah, with my luck it's probably a 4 cylinder out of a wrecked 87' probe or something. Not sure on the prop. I'm sure it's just the stock prop MB Boats used in 07

9DROZD · Outlaw Joined: 21 Apr 2010 Posts: 114

How does the oil look, and level.

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

oil is new and good, the engine only has about 12 hours on it

9DROZD · Outlaw Joined: 21 Apr 2010 Posts: 114

In a way it sounds like its in limp mode. If you put it in neutral and rev it does it respond well. Also when coming out of the hole with no weight or boarder, does get with it or lolly gags.

kartman · Posted: Jul 08, 2011 8:59 pm Post subject:

you need to take the boat off the trailer. not unhook it from the truck..

9DROZD, i think he is right on with this one.

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

It still is slow empty, but much better. With no ballast and 2 little kids and my wife driving it took about 100 yards to plane out and get to 30mph with me on slalom, and I know how to make myself light and easy to get out of the water. Limp mode? Never heard of that. I had a boat place put it on the computer when a wire melted recently and it was not getting any fire. Would limp mode not have showed up then?

9DROZD · Outlaw Joined: 21 Apr 2010 Posts: 114

Limp mode is where if the computer detects an irregularity in performance, and goes into like a safe mode where you can still make it home. It will limit the motor so that you cant turn up so many rpms. It could be a number of things. Knock sensor, Low oil pressure, Over heating, Tranny/V-drive low fluid. Since yours is EFI and fly by wire, youll have to have someone with a computer run a diagnostic out on the lake when it does it. If they just run it on a hose in the shop, chances are nothings going to show up since there is no load on the motor.

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

9DROZD, thanks man. I'll go have that looked at.

ridininmd · Wakeboarder.Commie Joined: 16 Feb 2006 Posts: 1231

Limp mode won't let you get over about 2500rpms so if you're hitting 30 I doubt that's it. There would also be an alarm going off or a light flashing. What type of rpms are you seeing? It could be the wrong prop. Is that motor throttle by wire or cable? If it's cable I'd almost suspect the throttle cable wasn't properly adjusted when the new motor was installed.

9DROZD · Outlaw Joined: 21 Apr 2010 Posts: 114

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

Couldn't I, with very limited knowledge about boat motors, but a pretty sharp dude, check that throttle cable. It feels like the throttle only works about 1/2 way; then you have about 6" of nothing like the perfect pass is cutting it off or something, but of course I have the pp turned off.

txwakeboarder · Newbie Joined: 05 Jul 2011 Posts: 10 City: McKinney

Couldn't I, with very limited knowledge about boat motors, but a pretty sharp dude, check that throttle cable. It feels like the throttle only works about 1/2 way; then you have about 6" of nothing like the perfect pass is cutting it off or something, but of course I have the pp turned off.

03parksridr · Soul Rider Joined: 04 Jun 2004 Posts: 256 City: Edmond

The perfect pass could definitely be your problem, if it is out of adjustment it will not allow your boat to reach full throttle. Check here first and let us know what you find.