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View Full Version : 150 hp force after 5min goes from 5k rpms to 0 rpms



war_cloud
09-03-2008, 09:02 PM
"someone please help I just bought this boat its a 1989 laguna with this motor. it idles perfect, nuns great up until that 5 min mark almost to the sec. it does it every time. the machanic changed almost some of the electrical stuff on motor but its still doing it. after running anywhere from 3k to 5k rpms after 5 min it goes rite to 0 but does not shut off after backing off the throttle it goes with no problem and then does it sparaticly agian. please help if you have any ideas. thanks jr"

jafa39
09-07-2008, 05:06 AM
Sounds like fuel blockage....pump the bulb when it starts to fade and if it picks up then you got fuel line/pump problems.

funny_brew
10-22-2008, 07:41 PM
"you may just be running long enough to suck the fuel from the fuel hose, then it's drawing a vacuum.

may be just a clog or your sucking something in the pickup tube in your fuel tank..

as mentioned, squeeze the bulb as soon as it drops to 0..or just have someone lightly squeeze the bulb while your running..it should remain pretty hard.."

timebandit
01-20-2009, 05:51 PM
is this a battery ign?