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Mercury xd 25

J

johnwilson153

New member
Hi
New member brand new to boats!
I have a mid to late 80s mercury 25 xd. At WOT while on plane or running on muffs the engine will bog, if I'm looking in carb opening as I approach WOT the butterfly will open and fuel will pour from around the Ventures and engine bogs will cause boat to nose dive if I back off it picks right back up
Any help would be greatly appreciated thanks
 
Bad float or float valve.----Poor venting of carburetor float bowl.-----Issues with choke / primer unit on carburetor.
 
OK thank you
I was going to get a rebuild kit for the carb
Can I get and should I get a rebuild kit for the fuel pump too
And is there anyway to make sure I have the right jets in
Carb ? And that's me assuming it's like a snowmobile or atv carb
I've never touched one before
Thanks
 
racerone said:
Ignition advances first.---Then throttle opens
Click to expand...
I got ya, I seen the little arm come over to the top of the magneto.
Thank you I I'm understanding more about this now
First boat and never worked on a outboard in my life.
Does this engine have reed valves ?
And I'm assuming I need 100 plus psi of cylinder pressure
 
Last two question
Should this engine have the carb cover on ? It was missing when I got it.
I have a little plastic piece on the inlet of my carb like a Venturi ? I have not seen In any other carb videos
 
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