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Old 10 September 2012, 11:42   #11
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I'd like to see a drawing for this outboard mapping out how the induction and exhaust is constructed. Perhaps a visit to the BRP website later this evening.
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Old 10 September 2012, 11:59   #12
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Quote:
Originally Posted by Dragonhawk ficht View Post
Confession.... I've been having the same problem same engine, when in speed restricted erea's, although not completly stall on the go, It's more a case of not wanting to restart after a few miles at tickover, that is untill I engage nute and give it a quick blast upon starting, then it runs smooth, I've been told by an Evinrude mech they just don't like low rpm's and will have a splutter now an then, but they'll happily run high rpm's all day, I also have a small amount of oil/fuel that collects inside casing, but can't find where from exactly. I reckon these engines are more suited for racing, which of cause we don't want on a fishing trip, but on the other hand after a day not catching much, it don't half put a smile on ur face when blasting WOT! and exceleration is sumut else. so i'm happy with mine for now.
I've always had some sort of rough running at lower speed after prolonged use. Never bothered me to be honest. However it has never died on me before. I'm going to bypass the RACOR filter in the short term and see if I can get rid of the air, that'll eliminate one potential problem.

with the petrol in the airbox, I'm not going to panic as it was only a little bit, but would like a better understanding how these 2 stroke DI engines work so i can determine where it's coming from.
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Old 10 September 2012, 13:25   #13
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I'd suggest swapping coils first and then check pump diaphragms. I hope it's as simple as this.
The pic is an evening return from the IoW into Southampton.
Nought to do with thread I know, but pleasant I hope.
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Old 11 September 2012, 04:37   #14
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Have you got the diagnostic software & cable?
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Old 11 September 2012, 05:05   #15
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Have you got the diagnostic software & cable?
Yes I have, just haven't had a chance to use it yet. There were no audible alarms on board when it happened.
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Old 11 September 2012, 07:03   #16
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Yes I have, just haven't had a chance to use it yet. There were no audible alarms on board when it happened.
The software should allow you to shut down individual ignition coils & injectors, it will help narrow down the problem. I'm not sure what the functionality is with the FICHT engines though.
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Old 11 September 2012, 07:40   #17
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I'm not sure I've quite got to the stage of having to go in to the software and shut stuff down yet but will bear it in mind for the future. I'll simplify the fuel system to reduce the risk of air entering for the time being and see if I get a repeat of Saturday's problems.

As for the fuel in the airbox. This has never happened before to my knowledge, so could it be that the injector squirted a measure of fuel in to the cylinder nanoseconds before I switched off the ignition, so remained unburnt and dribbled out the throttle when the outboard was tilted up?
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Old 11 September 2012, 10:57   #18
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All you need is one plug to be a bit dodgy and it will lower the RPM enough for a stall. I would just try a new set of plugs to be sure. You can always put the old ones back and save the new set for the next service.

Did you index the plugs when you last changed them?

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Old 11 September 2012, 11:54   #19
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Quote:
Originally Posted by Dragonhawk ficht View Post
I've been told by an Evinrude mech they just don't like low rpm's and will have a splutter now an then, but they'll happily run high rpm's all day,
Ahhhhh so it's like a high tech version of a premix engine then?
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Old 11 September 2012, 12:15   #20
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All you need is one plug to be a bit dodgy and it will lower the RPM enough for a stall. I would just try a new set of plugs to be sure. You can always put the old ones back and save the new set for the next service.

Did you index the plugs when you last changed them?

Chris
They were indexed, I had to buy another 7 plugs to get two to fit properly.

I'm already familiar with what the engine runs like one plug down, when I had it serviced in 2009 the technician forgot to fully push one of the HT leads fully home . It didn't stall at tick over, in fact you'd never have known it was running on 5. Stick it in gear and you knew something wasn't right. So I'm pretty sure that isn't the case this time around.
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