help 350 tbi dog

(canada_air) · (canada_air) **Join Date: Nov 2003** 07-05-2004, 7:02 PM

i bought 95 mastercraft maristar and has no power out of hole or under load, it spins 4800 rpm when empty. i have changed plugs, changed fuel filter(it was filthy)i was wondering if plugged injectors might be causing that much of power loss. i checked the plugs after using for 2 hours and the were a shade of white meaning lean mixture. i have injector cleaner in tank but i was wondering if anybody has had similar problem and fixed it. i do know an auto mechanic that says he can take apart throttle bodies and clean

(socalwakepunk) · (socalwakepunk) **Join Date: Dec 2002** 07-05-2004, 8:01 PM

Check the spark plug wires.

(boarditup) · (boarditup) **Join Date: Jan 2004** 07-06-2004, 5:27 AM

If you have 4800 rpms at top speed, then you likely have a prop issue. Yes, the TB could need a cleaning and it is always a great idea, but the problem is most likely the engine torque curve not matching your intended use.

Let me know what prop you are running and I can match you with what you should be running.

rider@boarditup.com

(bill) · (bill) **Join Date: Feb 2001** 07-06-2004, 6:06 AM

yea id say prop or tranny issue more then motor problem...

(canada_air) · (canada_air) **Join Date: Nov 2003** 07-06-2004, 8:05 PM

what i cannot figure out is that i know guy with same boat and he runs 2000lbs with same engine and prop and it is only a little sluggish for him. i am running half the weight and the boat will barely plane when trying to get up on board

(canada_air) · (canada_air) **Join Date: Nov 2003** 07-06-2004, 8:06 PM

i also forgot to say the plugs are white which would be a first in any engine i ever owned. usually they ar brown-black