04 25HP 4Stroke Bigfoot No power under load

Justaboatin

Seaman Apprentice
Joined
Jan 2, 2006
Messages
37
Hello,
I have a 2004 25HP 4Stroke Bigfoot on a 17Ft Bass tracker. I purchased the boat in May, the motor ran fine through mid July. Then it sat from mid July till Sept. When I took the boat back out in Sept the boat had no power and would not get on plain or over 2500RPM at full throttle. When the boat is in the driveway hooked up with muffs (under no load)it runs fine. The motor starts and idle's in and out of the water. I was thinking water or bad fuel I added a bottle of "heat" and some seafoam with no luck. It has a strong stream of water coming out.

Could it still be bad fuel?

Any other idea's.
I searched this fourm and found a few others with issue but no one had a anwser.

Thanks in advance
 

bgbass.1

Chief Petty Officer
Joined
Aug 1, 2007
Messages
558
Re: 04 25HP 4Stroke Bigfoot No power under load

could be bad fuel or dirt in carb.
 
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