99seadoogtxltd
New Member
They have been rebuilt using genuine minkuni parts. So please let's dig a little deeper.
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Done with seadoo and 2 strokes
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jkur10a
Active Member
Is the pop-off to proper spec?
99seadoogtxltd
New Member
Wonder if could be the wrong jetting. But then again, the plugs show no sign of lean or rich.
99seadoogtxltd
New Member
That is something I couldn't tell you. I have absolutely no idea about pop off pressure. Or even how it works or what it means. I'll be honest.
I have not had the elbow in my hand but I know if you follow the flush line from the back you run into it. I am with the others that it was most likely a carb issue. They really need to be nearly perfect or you will melt pistons. It is normally a cause of a lean condition.
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also, in most cases when a carb is rebuilt they use the springs that come with the kit for the popoff. That is something that should not be done. For some reason, they are almost always wrong. Keep the OEM spring,,,,
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AdamXP800
Well-Known Member
Maybe you should send your carbs out to someone who really knows their stuff. It's easy to over look something in these carbs. When I first started I sent mine out to Dr Honda I believe and my ski ran perfect. Sometimes a second set of eyes will find something overlooked.
330xi
Active Member
This thread really bugs me.
Why? Because of ignorance.
I don't care if you premix or not, that doesn't do anything if the carbs are making it run too lean. Mind you, simply rebuilding the carbs doesn't mean everything is fixed. If it's running lean, frickin' adjust it. That's what it sounds like.
And anyways, since you are too stuck on hating the SeaDoo brand, you might not realise that there are many ways you can melt down a Rotax motor. A leak almost anywhere equals lean running conditions.
For example; if there's a leak between carbs and block: lean. Leak between jugs and exhaust: lean. Any kind of gasket that isn't properly sealed: lean. Bad carb tuning: lean.
Enough of my rant. All of your problems were self created.
Why? Because of ignorance.
I don't care if you premix or not, that doesn't do anything if the carbs are making it run too lean. Mind you, simply rebuilding the carbs doesn't mean everything is fixed. If it's running lean, frickin' adjust it. That's what it sounds like.
And anyways, since you are too stuck on hating the SeaDoo brand, you might not realise that there are many ways you can melt down a Rotax motor. A leak almost anywhere equals lean running conditions.
For example; if there's a leak between carbs and block: lean. Leak between jugs and exhaust: lean. Any kind of gasket that isn't properly sealed: lean. Bad carb tuning: lean.
Enough of my rant. All of your problems were self created.
96spxpos
Well-Known Member
I've seen enough Seadoo rebuild vids on youtube where the mechanic/new owner needs to torch/heat/drill/smack with a mallet/ the hell out of the engine, to get down to the bare bones and find TONS of SAND, to keep me from EVER beaching my ski. Reverse flush EVERY TIME or not, just not worth it
96spxpos
Well-Known Member
Yea, and that's one thing I have to remind myself EVERY time something goes wrong... the ski IS ALMOST 20 years old! I've had some damage taken to me in my first 20 years, so imagine a ski being put thru the salt wringer. anyway, I've put over 30 hours into my ski the last few months restoring it, and that's NOT with a blown motor, so, unless you just blew $15k on a brand new ski, expect to put some "quality" time in with your ski, Seadoo OR Yami...
One thing I CAN tell you, you're IN THE RIGHT PLACE...the time and MONEY this forum has saved me is priceless.
Good Luck
One thing I CAN tell you, you're IN THE RIGHT PLACE...the time and MONEY this forum has saved me is priceless.
Good Luck
99seadoogtxltd
New Member
First of all 330xi: I very clearly stated that I was told the original fried piston was due to clogged oil line, bad oil injector, yadda yadda yadda. And believe me, I don't HATE seadoo. They have a very good reputation, I'm just fed up with 2 strokes in general. Second of all BOSS, if you would have read, this is a fairly new sbt engine with maybe 20 hours on it. They also send new gaskets. So therefore a leak is HIGHLY unlikely to be the cause of this engine failing also hence new gaskets, new jugs, new exhaust gaskets. And you say all of my problems are self created. I love that. LOVE IT.
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I just want to make it a point to remind all that we need to keep things civil. This site is the best there is and it is that way for a reason. Not pointing any fingers, just putting it out there. Thank you,,,
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99seadoogtxltd
New Member
I bought this ski USED and had the same problem. I myself have no created any problems. I've actually fixed many issues. Trying to work this one out as well. Just because I say I'm sick of 2 strokes, the seadoo just happened to be the 2 stroke I own.
Spimothy Leary
Well-Known Member
well then your thread title is misleading...
sorry, but after reading the original rant, my first thought was "user error"
Don't get me wrong, i've b1tched and moaned about 2 strokes before as well, but the times I've blamed the machine for my mistakes are few and far between.
99seadoogtxltd
New Member
I'm just sick of people trying to say it's all your fault, you caused that engine to fail, blah blah blah. Motors wear out. Plain and simple. I understand that. Our job is to keep them maintained and get the most out of them we can. That's what I have been trying to do. I've done everything you guys have helped me do. And I'm just almost to my end with it. I have a TON of time and hard work put into this. The ski is mint other than this little issue and I can seem to wrap my head around it.
User error does not mean its your fault in that you screwed up and caused the issue. It can be as simple as a lack of knowledge. I can promise you that, this situation will force you to learn. Most will go through this learning curve.
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96spxpos
Well-Known Member
Well, we can all relate to your frustration...There's no such thing as a dumb question on here...better to ask then be sorry for not asking..
but most would say it's carb/fuel related..
And I'm about to feel the nervous frustration as well, as I need to replace my PTO carb that seized, and BEFORE that, my carbs were tuned PERFECTLY.. now I'm headed into the unknown by getting another carb. I think that's why I will SEND not just the one, but BOTH to a seasoned professional for tuning. I'm hoping yours is carb related and you can get it solved sooner rather than later.
but most would say it's carb/fuel related..
And I'm about to feel the nervous frustration as well, as I need to replace my PTO carb that seized, and BEFORE that, my carbs were tuned PERFECTLY.. now I'm headed into the unknown by getting another carb. I think that's why I will SEND not just the one, but BOTH to a seasoned professional for tuning. I'm hoping yours is carb related and you can get it solved sooner rather than later.
99seadoogtxltd
New Member
Who would be a good carb tech?
SabrToothSqrl
Well-Known Member
$400 new, sell your old set for $100. $300 gets you brand new carbs, jets, gaskets, accelerator pump. fuel pump, etc.
Spimothy Leary
Well-Known Member
One statement I remember a seadoo guy said a couple years ago that stuck with me... I would currently consider him one of the best 2 stroke tuners in my tri county area.
" I've been a mechanic most of my life and have built race cars and dragsters from scratch so when I got into Jet ski's I figured it would be an easy transition, I dotted all my I's and crossed every T, checked everything twice, and my first engine build lasted 10 minutes before it popped"
The moral to the story is to piggy back on coastie's statement... Even if you know engines and are extremely careful, There IS a learning curve and it can be a steep and expensive one at times even for those qualified, but are inexperienced with the particular machine.
nammer
Well-Known Member
x2, i've pm'd doc honda twice, with no response, i do understand he's busy, but who else is another alternative
You might want to consider just buying a new set of carbs, and be done with it. OSD sells new ones at a very reasonable price.
I would also like to make a comment here, I've been watching this thread, it's a thread that could have gotten out of hand, but fortunately cooler heads have prevailed. I will have to admit that when I first saw this thread, I was a little pissed myself, that's why the short comment.
Anyway, yes I can understand your frustration with 2-stroke motors. I have owned boats most of my life most and most of them have been 4-stroke Mercruiser stern drives. The engines are really automotive type engines that have been adapted for use as marine engines. They will literally last forever, or at least until the boat itself wears out. Very little maintenance, change the lower unit oil, motor oil, annually, every few years a tune up and replace the lower unit water pump impeller and that's about it.
Seadoo/Rotax 2-strokes on the other had require a lot more maintenance and care, I will admit when I first got into this sport or obsession I was shocked how much care these little engines require, and also the fact that they need to be rebuilt every 200-400 hours vs thousands of hours for a 4-stroke (boat motor). However there is nothing like the feel of a light weight 2-stroke ski like coming out of a no wake zone and hammering it, also the fun and maneuverability of a 2-stroke ski. Yes I know some say the new Spark is close, but I think the jury is still out on that one.
Anyway that's my story and I'm sticking to it.
Lou
I would also like to make a comment here, I've been watching this thread, it's a thread that could have gotten out of hand, but fortunately cooler heads have prevailed. I will have to admit that when I first saw this thread, I was a little pissed myself, that's why the short comment.
Anyway, yes I can understand your frustration with 2-stroke motors. I have owned boats most of my life most and most of them have been 4-stroke Mercruiser stern drives. The engines are really automotive type engines that have been adapted for use as marine engines. They will literally last forever, or at least until the boat itself wears out. Very little maintenance, change the lower unit oil, motor oil, annually, every few years a tune up and replace the lower unit water pump impeller and that's about it.
Seadoo/Rotax 2-strokes on the other had require a lot more maintenance and care, I will admit when I first got into this sport or obsession I was shocked how much care these little engines require, and also the fact that they need to be rebuilt every 200-400 hours vs thousands of hours for a 4-stroke (boat motor). However there is nothing like the feel of a light weight 2-stroke ski like coming out of a no wake zone and hammering it, also the fun and maneuverability of a 2-stroke ski. Yes I know some say the new Spark is close, but I think the jury is still out on that one.
Anyway that's my story and I'm sticking to it.
Lou
Captain RonJon
New Member
Hey for what it's worth, I am brand new to jet skis - never owned one before now. I followed this forum (among others) for a while before deciding this is where I should 'hang my hat'. I decided on an older model 2 stroke SeaDoo (in fact, now I have 2 of them that don't run, lol). Lots of work ahead and lots of hours will be spent in the garage. In fact, I estimate that I just might spend more time in the garage 'learning' the first couple of seasons than being out on the water but I'm ok with that and sometimes learning comes at a price, and I'm sure I'll make mistakes - I built that into my purchase. But I will never make the mistake of thinking that going from 2 stroke to 4 stroke or from Seadoo to Yamaha will alter that risk - I've read far too many forum threads to believe that. Unless money is no object for you, you either jump in with both feet or not, I don't think there is anything in between. And if I go into the water and only last 10 minutes, I'll go back to the garage, put my student hat on, log on to this forum and keep on going. It's been an immense help already!!
99seadoogtxltd
New Member
Yes indeed. I've spent many long nights wrenching away. Some things I shouldn't have done. Some things had to be done. All trial and error. There's hardly ever a master mechanic with these things. They are very tedious, finicky machines. But when they're running right, the sunny day, the water, the 2 stroke smell, is something that you don't ever want to leave. "I'd rather be lost at the lake, than found at home!"
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