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Old 10 November 2005, 05:26   #1
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E-Tec 250 HP engine down

Last weekend we were trying out a new prop. After 5 minutes our engine stopped running. There was no way to start it up again. They have connected it to a computer but no errors in the log file. So they opened the engine and in the 2 lower cylinders there is water!!! Nobody understands how itís possible there is so much water in the cylinders. Yes we have a water separator and there has never been water in it. The engine has 150 hours.

So they will replace the whole engine block. But they donít have such a spare part in Europe it seems Ö So no boating for us for at least 3 to 6 weeks.

Has somebody ever had such a problem?
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Old 10 November 2005, 07:56   #2
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Quote:
Originally Posted by Seaharrier
Last weekend we were trying out a new prop. After 5 minutes our engine stopped running. There was no way to start it up again. They have connected it to a computer but no errors in the log file. So they opened the engine and in the 2 lower cylinders there is water!!! Nobody understands how itís possible there is so much water in the cylinders. Yes we have a water separator and there has never been water in it. The engine has 150 hours.

So they will replace the whole engine block. But they donít have such a spare part in Europe it seems Ö So no boating for us for at least 3 to 6 weeks.

Has somebody ever had such a problem?
Yes a friend of mine lost an Etec 250hp during a charter on Cowes week. He is not a curious bunny and didn't get the details apart from "no.2 piston blew/seized in the bore" due to an oiling failure or something. He went mental on them and demanded a new motor which he got. Oddly enough the dealer said "first time we've come across that Guv" or words to that effect. The replacement has been running fine so far.
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Old 10 November 2005, 08:54   #3
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Quote:
Originally Posted by hard1
Yes a friend of mine lost an Etec 250hp during a charter on Cowes week. He is not a curious bunny and didn't get the details apart from "no.2 piston blew/seized in the bore" due to an oiling failure or something. He went mental on them and demanded a new motor which he got. Oddly enough the dealer said "first time we've come across that Guv" or words to that effect. The replacement has been running fine so far.
But ours was full of water (the 2 lower cylinders). Someone correct me if Iím wrong but the only way water can get in is via the air-intake or via the exhaust pipe. But we were testing the prop on a river and all of a sudden the engine started to act strange and 20 sec. later it was dead.

The Bombardier guy told my dealer maybe we have put the engine under water while putting it from the slipway into the river. But thatís impossible. Our dealer was helping us putting it in the water and we ďdroveĒ it off the trailer. That means the engine was running, and no water can enter via the exhaust pipe at that moment?!
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Old 10 November 2005, 09:49   #4
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Quote:
Originally Posted by Seaharrier
But ours was full of water (the 2 lower cylinders). Someone correct me if Iím wrong but the only way water can get in is via the air-intake or via the exhaust pipe. But we were testing the prop on a river and all of a sudden the engine started to act strange and 20 sec. later it was dead.

The Bombardier guy told my dealer maybe we have put the engine under water while putting it from the slipway into the river. But thatís impossible. Our dealer was helping us putting it in the water and we ďdroveĒ it off the trailer. That means the engine was running, and no water can enter via the exhaust pipe at that moment?!
Porous block i'll bet next weeks dole money. It's amazing isn't it. It's always YOUR fault. "The Bombardier guy told my dealer maybe we have put the engine under water while putting it from the slipway into the river."

Outrageous! Good job you had the dealer with you at the time. else they may have even refused warranty repair! My friend refused to accept the repair and said he wanted a new motor and he got one.
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Old 10 November 2005, 10:57   #5
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I have heard of a similar problem to this but with a four stroke engine. As it is possible for a four stroke to suck water up the exhaust pipe, but I am not sure that a two stroke would behave in this way.
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Old 12 November 2005, 10:46   #6
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problem found

They have found the cause of why the engine did not work. Itís probably due to a bad spark plug. One of the cylinders did not work correctly any more. As there was no more combustion in that cylinder, the piston started to wear and finally broke. As it broke it slammed a hole in the engine bloc and just in the ďtubeĒ where a spray of water is coming out (sorry donít know the exact word). So the water was not the cause of the brake-down. It just went in the lower cylinders afterwards.

Strange thing is, we didnít see it coming at all. The engine did not vibrate or any other sign.

Someone had this before?


paul
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Old 12 November 2005, 14:05   #7
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Dont know exactly what the engine brain box looks at or remembers, but would have thought it would have picked up a dead pot?

Anyone able to list exactly what the brain box looks at?
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Old 12 November 2005, 19:40   #8
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Quote:
Originally Posted by Seaharrier
They have found the cause of why the engine did not work. Itís probably due to a bad spark plug. One of the cylinders did not work correctly any more. As there was no more combustion in that cylinder, the piston started to wear and finally broke. As it broke it slammed a hole in the engine bloc and just in the ďtubeĒ where a spray of water is coming out (sorry donít know the exact word). So the water was not the cause of the brake-down. It just went in the lower cylinders afterwards.

Strange thing is, we didnít see it coming at all. The engine did not vibrate or any other sign.

Someone had this before?


paul
See my post above - sounds like exactly the same fault (except the spark plug bit which I am quite dubious about). I am surprised you didn't notice it was only firing on only 5 cylinders, as this would have taken some time to damage the bore (if true).There was no warning for him either. I would be grateful if you could find out which cylinder it was. My friend got a brand new engine out of them.
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Old 14 November 2005, 01:55   #9
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Quote:
Originally Posted by hard1
See my post above - sounds like exactly the same fault (except the spark plug bit which I am quite dubious about). I am surprised you didn't notice it was only firing on only 5 cylinders, as this would have taken some time to damage the bore (if true).There was no warning for him either. I would be grateful if you could find out which cylinder it was. My friend got a brand new engine out of them.
there was no special vibration. While testing different props, even my dealer didn't notice anything.

When we bought the boat, we did the prop testing on a river (our dealer has a slipway on that river). With our current prop we reached 5700 RMPís with 2 adults and 180l of fuel.

But we are always navigating on the sea and mostly with more than 2 adults (4-5). During the end of September, beginning of October we noticed that at WOT we did only 5400 RMPís. But that might have been to extra weight on board (40l of spare fuel, all kinds of boating gear in the trunk) and not being able to trim as much as on a river.
That's why we thought, the prop is too big and we were testing a new one.

I donít know which cylinder it is. Iíll ask my dealer tomorrow.
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Old 14 November 2005, 06:48   #10
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Very sad, but interesting to read about your problems. I'm about to purchase an E-tec 250 for my boat. What size props did you test with the 2 people on board and what size with 4 people? Can you tell me about fuel use and speed?
After all do you still like your engine?
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