problem with jet boat

Fishermrp · Newbie Joined: 02 Feb 2003 Posts: 21 City: New Hope, MN

my friend has a two engine jet boat that is 2 years old i think and one of the engines only revs to about 3500 rpm but now and then will kick in and have some power anyone have any ideas what the problem could be i was thinking maybe spark plugs or carburator

klt599 · Newbie Joined: 16 Jun 2003 Posts: 19 City: Australia NSW

I had the same hting happen on my seadoo rx

changed out the sparkplugs went perfectly

hope that helps

graphik · Addict Joined: 20 Feb 2003 Posts: 727 City: miller lake

change sparkplugs, and check the impeller. They can suk up debris pretty quick, and from deep under water (2 feet or more). If it chews the impeller, get out the check book, but they are pretty hard to bend, so I'm sure it's just weeds, and spark plugs.

Sportster4Tec · Posted: Jun 17, 2003 10:37 am Post subject:

We went out into a lake and all of a sudden the engine started sounding really weird we looked around us and there was all this seaweed grass crap everywhere. So we got out of it back into some fresh water and kept trying to get the impeller to chop it up but it never worked so we went just over idle back to the dock and pull the boat up. There was a ball of the junk about 1'x1'. Im sure thats not your problems its probably the spark plugs just thought i'd share.

Fishermrp · Newbie Joined: 02 Feb 2003 Posts: 21 City: New Hope, MN

thanks guys we'll try changing the spark plugs and see if thats what it is