ENGINE TROUBLE NEED HELP

This topic has 9 replies, 5 voices, and was last updated 16 years, 10 months ago by kbgfish.

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July 20, 2009 at 1:16 pm #362025

catman 1
Participant

HEY GUYS NEED YOUR HELP. 2007 PANTERA IV WITH 200 OPTIMAX 25 TROPHY PROP. CAN NOT LOWER MOTOR ANY MORE DUE TO HYDRAULIC STEERING ARM. BOAT JUMPS OUT OF HOLE. QUESTION. BOAT GETS UP TO 65 MPH WITH 5400 RPMS. 35 GAL FUEL, LIVEWELL FULL 2 PERSONS. THIS LAST ABOUT A MINUTE THEN IT DROPS BACK TO 57-58 MPH WITH 5000 RPMS. LIKE A GOVERNOR IS ON IT . POP OPEN GAS CAP NO CHANGE. MOTOR WAS JUST SERVICE WHEN I BOUGHT IT MARCH 2009. SHOULD I GO DOWN TO A 24 PITCH PROP SO MY RPMS IS HIGHER. BUT I CANT UNDERSTAND WHY IT WILL GO 65 THEN FALLS DOWN TO 57-58 MPH. ANY SUGGESTIONS?

July 20, 2009 at 4:20 pm #362028

Bass Cat Boats
Keymaster

That is an issue. Dont spend money on props. That needs to goto a service shop until its fixed. In my minimally educated opinion there is no “good” reason a boat shoud slow down. The only reason I can remotely think of is the trim. If you are losing hydraulics on the trim unit and the trim is going down after you get it up and running itll slow like that but I assume youd notice that when you looked at your trim gauge or on your smartcraft trim gauge.C.O.D. Jr. III

July 20, 2009 at 4:28 pm #362031

Bass Cat Boats
Keymaster

Sounds like the electrical system, stator to us? It is definitely electrical in issue. The problem may be checked by the voltage on the gauges. If your over about 14.2 running, or under 12.4 something is up! BCB

July 20, 2009 at 4:50 pm #362034

Youngblood93
Participant

That could be why my boat only hits 62 now!!! Gah….Dan Yonan. ———————————————————

July 20, 2009 at 7:22 pm #362037

Bass Cat Boats
Keymaster

just talked to the dealership. going to bring it in. they think maybe a coil dropping out or maybe the stator like you said. what should i expect as for as the speed in a pantera iv loaded out when the motor is running good?

July 20, 2009 at 9:41 pm #362040

Bass Cat Boats
Keymaster

P4 models can run from 65 to lower 70s and there is a disparity in the numbers. They will use most any propeller on varying rigs. BCB

July 21, 2009 at 2:44 am #362043

jigging
Participant

Sounds like the high RPM stator.

July 21, 2009 at 11:10 pm #362046

kbgfish
Participant

I had a similar problem with my 02 merc 250xb and it turned out to be deteriorated fuel lines. I would run like a raped ape for a couple of minutes then I would lose about 400 rpms and couldnt gain them back no matter what I tried. My mechanic said that ethanol based fuels deteriorated the inner fuel line and would “flap over”and restrict fuel flow.Approximate $275 repair if my memory is right.

July 22, 2009 at 1:03 pm #362048

catman 1
Participant

THANKS KBGFISH, I WILL FORWARD THIS TO MY REPAIR SHOP. THE ENGINE IS STILL UNDER WARRANTY AND STABIBLIZER IS USE EVERY TIME (BLUE TYPE) DO YOU KNOW IF THIS WOULD BE COVERED UNDER WARRANTY?

July 22, 2009 at 10:59 pm #362050

kbgfish
Participant

I dont know enough about the warranty info to comment . Have your mechanic check out the electrical system first as advised by BCB and if its fine, go on to the fuel system. Hope you get her straightened out soon ,Good luck
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