had friends use my boat...they left the gas cap off after fueling, and drove 5 miles on a rough lake... My question is this: before I tear it down, was it possible that it burned lean and toasted the cylinder, or wouldn't that have had anything to do with the damage... there's no alarms....These engines are weird animals....figured I'd ask.....
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2005 LEDI burned piston
- Thread starter fliboy
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Dr Honda
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Nope. The fuel system doesn't pressurize, so a loose cap won't destroy the engine. I would be worried about water in the fuel though.
Once you open the engine... we can determine what happened. But... it's not common for an engine that new to give up. (I personally have a 90 Si with the factory engine still kicking)
How many hours are on the boat? SeeDoo's should run into the 400 hr mark.
Once you open the engine... we can determine what happened. But... it's not common for an engine that new to give up. (I personally have a 90 Si with the factory engine still kicking)
How many hours are on the boat? SeeDoo's should run into the 400 hr mark.
ledi
around 150 hrs...I bought it used.... I pumped fuel into a container...no water...but I'll pull it down this weekend to see if I can tell what happened.. with the boroscope, the edges of the piston are slightly melted, which makes me think it went lean... I don't know anything about the rave valves....even in the factory manual, it doesn't say muych about them....could one of them caused this, or possible injector(if there wasn't water in it???)
around 150 hrs...I bought it used.... I pumped fuel into a container...no water...but I'll pull it down this weekend to see if I can tell what happened.. with the boroscope, the edges of the piston are slightly melted, which makes me think it went lean... I don't know anything about the rave valves....even in the factory manual, it doesn't say muych about them....could one of them caused this, or possible injector(if there wasn't water in it???)
Dr Honda
Well-Known Member
Water in the fuel will make it cough and run bad. To melt a piston... it has to run lean for a while.
Also... the RAVE valves shouldn't cause a melt down like that on a Di engine.
I'd say your fuel pressure dropped, and you just started running lean. The Di engines are on the ragged edge of a melt down with the factory mapping anyway. A small dip in pressure is enough to kill it.
Also... the RAVE valves shouldn't cause a melt down like that on a Di engine.
I'd say your fuel pressure dropped, and you just started running lean. The Di engines are on the ragged edge of a melt down with the factory mapping anyway. A small dip in pressure is enough to kill it.
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