Recently having problems with my 1990 3.0 mercruiser. when starting
out on the boat it will idle fine but when you give it full throttle
it will run fine for a minute then just start missing and eventually
will start to bog out and then finally die out. After dying out I also
have trouble restarting and ususally end up flooding the engine. Has
new cap/plugs/wires and just put on a new fuel water
seperator/filter.. Any help would be greatly appreciated. THANKS

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"jbird" wrote in message
news:[email protected] ngforumz.com...
Recently having problems with my 1990 3.0 mercruiser. when starting
out on the boat it will idle fine but when you give it full throttle
it will run fine for a minute then just start missing and eventually
will start to bog out and then finally die out. After dying out I also
have trouble restarting and ususally end up flooding the engine. Has
new cap/plugs/wires and just put on a new fuel water
seperator/filter.. Any help would be greatly appreciated. THANKS



Wild guess, but it happened to me .....

Bad coil.

Eisboch

Eisboch wrote:
"jbird" wrote in message
news:[email protected] ngforumz.com...
Recently having problems with my 1990 3.0 mercruiser. when starting
out on the boat it will idle fine but when you give it full throttle
it will run fine for a minute then just start missing and eventually
will start to bog out and then finally die out. After dying out I also
have trouble restarting and ususally end up flooding the engine. Has
new cap/plugs/wires and just put on a new fuel water
seperator/filter.. Any help would be greatly appreciated. THANKS



Wild guess, but it happened to me .....

Bad coil.

Eisboch


Another wild guess. Moisture in distributer.

On Thu, 11 Sep 2008 01:22:08 -0500, jbird wrote:

Recently having problems with my 1990 3.0 mercruiser. when starting
out on the boat it will idle fine but when you give it full throttle
it will run fine for a minute then just start missing and eventually
will start to bog out and then finally die out. After dying out I also
have trouble restarting and ususally end up flooding the engine. Has
new cap/plugs/wires and just put on a new fuel water
seperator/filter.. Any help would be greatly appreciated. THANKS

Sounds like a repeat of my 5.7L problems. Bad coil. Water was getting to it
from the live well just above, mounted in the transom.
--
John H.

"jbird" wrote in message
news:[email protected] ngforumz.com...
Recently having problems with my 1990 3.0 mercruiser. when starting
out on the boat it will idle fine but when you give it full throttle
it will run fine for a minute then just start missing and eventually
will start to bog out and then finally die out. After dying out I also
have trouble restarting and ususally end up flooding the engine. Has
new cap/plugs/wires and just put on a new fuel water
seperator/filter.. Any help would be greatly appreciated. THANKS

--
Posted at author's request, using moderated http://www.BoatingForumz.com
interface
Thread archive:
http://www.BoatingForumz.com/mercrui...ict100048.html

Typically that's an indication that it is not getting enough fuel. It uses
up the fuel in the bowl and then dies. Did you have a lot of water in the
water filter? Mechnical fuel pumps fail after a while due to water
exposure. Most of them can be disassembled to check. Junk in the tank
could be cloggin up the pick up as well. Or a collapsed fule line
somewhere, the marine line does this without much external signs because it
is double walled. But I'd check the fuel pump first.