Yamaha WaveRunner 3 problem
Dan Dang
Hi,
I am trying to find out why and how one of the 2 cylinders on my jetski
lost complete compression. I just bought this 95' jetski about 3 weeks
ago and rode on it 4 times. The 3rd time out I was pulling a ski
tube. The 4th time the ski started malfunctioning and it only ran on
one cylinder.
Is it possible that because I was pulling a ski tube tha t could cause
the engine to break one of its 2 cylinders? ( I am having the engine
rebuilt)
Thanks
Dan
BuStArAgE
nope this is common on older waverunners, people sell them when they think they
are worn out, you just got one of the ones that was about to blow, and it just
let loose when you put the extra load of the tube behind it!
Mark Mahoney
Is this because of the "best most reliable pwc on the market today" that you spoke
of just a thread ago? Don't lead people into false security, Yahama has it's share
of problems.. unless of course you call customer service....then you'll find out
that there is nothing ever wrong with Yahama or any of their products...
bak...@my-dejanews.com
We have a 97 Yamaha GP 1200 and until the start of this season it has run
beautiful. Its my wife's boat, I prefer my old Kaw standup, and she has
taken excellent care of it.
The first time out this year, about 2 weeks ago, she had a uneventful 1
hour ride. My son and his friend took it out and 30 seconds into their ride
it slowly lost power and quit. He got it restarted and it came up to speed
and again lost power and quit. It wouldn't restart and after investigation
we found the engine locked up. #1 cylinder had a sparkplug inpression in the
top of the piston and the plug gap was closed. We first thought #1 ran
without oil suspecting the injection system.
Luckily she got the extended warranty. The mechanic said the cylinder ran
lean and seized the piston. They're waiting for the parts and hopefully will
get the boat back w/o 6/15.
I asked the mechanic what caused the damage and he plans on pulling the
cab. and fuel pump apart but isn't sure they'll find the cause. He says "its
the nature of a two cycle" "it might never happen again" "it'll be OK". Not
very reassuring to my wife on her long rides.
help
Rich
bak...@ci.richmond.va.us
apart and
In article <6l8hje$1vu$2...@gte1.gte.net>,
-----== Posted via Deja News, The Leader in Internet Discussion ==-----
http://www.dejanews.com/ Now offering spam-free web-based newsreading
bak...@my-dejanews.com
Harry Krause
bak...@my-dejanews.com wrote:
>
> We have a 97 Yamaha GP 1200 and until the start of this season it has run
> beautiful. Its my wife's boat, I prefer my old Kaw standup, and she has
> taken excellent care of it.
>
> The first time out this year, about 2 weeks ago, she had a uneventful 1
> hour ride. My son and his friend took it out and 30 seconds into their ride
> it slowly lost power and quit. He got it restarted and it came up to speed
> and again lost power and quit. It wouldn't restart and after investigation
> we found the engine locked up. #1 cylinder had a sparkplug inpression in the
> top of the piston and the plug gap was closed. We first thought #1 ran
> without oil suspecting the injection system.
>
> Luckily she got the extended warranty. The mechanic said the cylinder ran
> lean and seized the piston. They're waiting for the parts and hopefully will
> get the boat back w/o 6/15.
>
> I asked the mechanic what caused the damage and he plans on pulling the
> cab. and fuel pump apart but isn't sure they'll find the cause. He says "its
> the nature of a two cycle" "it might never happen again" "it'll be OK". Not
> very reassuring to my wife on her long rides.
>
It might have been something as simple as the gasoline, especially if you are
using oxygenated high-test. Doesn't work too well with some carbed two cycle
engines and can burn pistons. Really.
gl...@ix.netcom.com
Boy, lots of seizures even in Yamahas too. Sure wish these PWC engines
had the durability of 4 cycles when making long distance runs at sea.
Would I be correct in assuming that a triple cyclinder/triple carb motor
has a statistically greater probability of seizure than a twin, if
everything else was equal? And a single versus a twin would then have
even less of a chance of seizure???
Just wondering again...Jim
Tom Howlin
gl...@ix.netcom.com wrote:
>
>
First, the impression you are seeing in the top of the piston isn't from
the spark plug, it's from detonation and is slowly burning a hole
through the top of the piston. If the spark plug gap is closed down,
it's because you've got either foreign material (as in rod bearings) up
on top of the piston or the boat was hydro-locked and twisted the crank
(not particularly difficult to do with the 1200 motor). If the mechanic
thinks it is simply a seizure problem with no known cause, find another
mechanic. In today's production two strokes, there is always a cause
for a seizure (no oil, overheating, etc..) and curing the problem
without finding the cause will only invite the customer back again.
Your crank needs to be indexed to see if it is twisted and if so, a new
crank put into the boat. There is a long laundry list of potential
seizure creating problems from unbalanced pop-off pressure to a bad oil
check valve (can't vent the tank so it pulls the oil back out of the
lines to the carbs), air leaks, improper oil, fuel starvation, etc.. and
each of these needs to be checked before simply giving the ski back to
the customer. I speak from experience, having fixed the result without
curing the problem and it doesn't work.
Tom
Lake Anna Watercraft Center
Dan Dang
I have the same problem with my 95 Wave runner 3. I just wonder if this is
Yamaha's common problem. And it is a major problem with the ski. My jetski still
is in the shop waiting for parts and services and it has been 3 weeks without my
jetski. So far, I've spent about 150 bucks for the piston, rings, gasket, etc.
and 45 bucks for the Service Manual. The labor cost is yet to come.
If you ever find out what caused the engine to lock up, let me know.
Dan
bak...@my-dejanews.com wrote:
> We have a 97 Yamaha GP 1200 and until the start of this season it has run
> beautiful. Its my wife's boat, I prefer my old Kaw standup, and she has
> taken excellent care of it.
>
> The first time out this year, about 2 weeks ago, she had a uneventful 1
> hour ride. My son and his friend took it out and 30 seconds into their ride
> it slowly lost power and quit. He got it restarted and it came up to speed
> and again lost power and quit. It wouldn't restart and after investigation
> we found the engine locked up. #1 cylinder had a sparkplug inpression in the
> top of the piston and the plug gap was closed. We first thought #1 ran
> without oil suspecting the injection system.
>
> Luckily she got the extended warranty. The mechanic said the cylinder ran
> lean and seized the piston. They're waiting for the parts and hopefully will
> get the boat back w/o 6/15.
>
> I asked the mechanic what caused the damage and he plans on pulling the
> cab. and fuel pump apart but isn't sure they'll find the cause. He says "its
> the nature of a two cycle" "it might never happen again" "it'll be OK". Not
> very reassuring to my wife on her long rides.
>
Dan Dang
Dan Dang
jetski junkies
bak...@my-dejanews.com wrote:
>
> We have a 97 Yamaha GP 1200 and until the start of this season it has run
> beautiful. Its my wife's boat, I prefer my old Kaw standup, and she has
> taken excellent care of it.
>
> The first time out this year, about 2 weeks ago, she had a uneventful 1
> hour ride. My son and his friend took it out and 30 seconds into their ride
> it slowly lost power and quit. He got it restarted and it came up to speed
> and again lost power and quit. It wouldn't restart and after investigation
> we found the engine locked up. #1 cylinder had a sparkplug inpression in the
> top of the piston and the plug gap was closed. We first thought #1 ran
> without oil suspecting the injection system.
>
> Luckily she got the extended warranty. The mechanic said the cylinder ran
> lean and seized the piston. They're waiting for the parts and hopefully will
> get the boat back w/o 6/15.
>
> I asked the mechanic what caused the damage and he plans on pulling the
> cab. and fuel pump apart but isn't sure they'll find the cause. He says "its
> the nature of a two cycle" "it might never happen again" "it'll be OK". Not
> very reassuring to my wife on her long rides.
>
> help
> Rich
> bak...@ci.richmond.va.us
> apart and
>
> mmm...@gte.net wrote:
> >
> > Is this because of the "best most reliable pwc on the market today" that you
> spoke
> > of just a thread ago? Don't lead people into false security, Yahama has it's
> share
> > of problems.. unless of course you call customer service....then you'll find
> out
> > that there is nothing ever wrong with Yahama or any of their products...
> >
> > BuStArAgE wrote:
> >
> > > nope this is common on older waverunners, people sell them when they think
> they
> > > are worn out, you just got one of the ones that was about to blow, and it
> just
> > > let loose when you put the extra load of the tube behind it!
> >
> >
>
> -----== Posted via Deja News, The Leader in Internet Discussion ==-----
> http://www.dejanews.com/ Now offering spam-free web-based newsreading
If the piston hit the spark plug you either (1) busted the wrist pin
casings on the piston or(2) your crank is toast.
Perry
jetski junkies
stock Yamaha head takes? Seems squish band would keep piston from
hitting the plug.
Perry
