96 Sea Doo XP Rear Cylinder Has Excessive Oil?

Carl Gloria

unread,

Jul 6, 2003, 11:26:04 AM7/6/03

to

After Removing head noticed oil pooling on top of piston. Kept Turning over
and sopping up excessive oil. After doing this for half hour eventually
could get engine to start. Now of course I have lots of white smoke pouring
out, but at least it starts now! Why would I have so much oil in only one
cylinder only? Is my oil pump bad? Is one cylinder leaking when it is at
stand still? Last Few years have noticed white smoke, at idle, but would
burn off once you ran ski at full speed for awhile. This is the first start
of the season and it was way to much oil. The spark plug was soaked and when
it was turned over without plugs, oil shot out of the rear cylinder only....

Carolina Watercraft Works, Inc.

unread,

Jul 6, 2003, 12:10:17 PM7/6/03

to

You have either of 2 scenarios taking place. Either a) the seal on the rotary
valve is leaking allowing oil to seep into the cylinder or b) the inner crank seal
is leaking allowing the oil to seep. If it's the RV shaft seal no real biggie. If it's
the crank seal then you are looking at a crank rebuild.

--
Laszlo Almasi
Carolina Watercraft Works, Inc.
2810-5D Yonkers Road
Raleigh, NC 27604
loba...@mindspring.com
"Carl Gloria" <2live...@earthlink.net> wrote in message news:gcXNa.30182$C83.2...@newsread1.prod.itd.earthlink.net...

Bill O'Neal

unread,

Jul 6, 2003, 9:01:23 PM7/6/03

to

You need a new crankcase seal on the crankshaft. Oil is leaking from the
rotary valve oil resivour in the center of the case into that side of the
crankcases. The motor must come completely apart to fix it.

Bill O'Neal
WCM

"Carl Gloria" <2live...@earthlink.net> wrote in message
news:gcXNa.30182$C83.2...@newsread1.prod.itd.earthlink.net...

Carl Gloria

unread,

Jul 6, 2003, 10:43:27 PM7/6/03

to

TEst

"Bill O'Neal" <water...@worldnet.att.net> wrote in message
news:DD3Oa.43308$3o3.2...@bgtnsc05-news.ops.worldnet.att.net...

Carl Gloria

unread,

Jul 6, 2003, 10:49:34 PM7/6/03

to

Any pressure test needed to verify?

So I am assuming that the counter-balance side fitting feeds oil to the
rotary valve chamber, the carb side fitting is the return. Does the
un-cumbusted oil drip down to the push rod chamber?

Any chance the oil pump or small brass fitting under the carbs could be
leaking?

"Bill O'Neal" <water...@worldnet.att.net> wrote in message
news:DD3Oa.43308$3o3.2...@bgtnsc05-news.ops.worldnet.att.net...

Carolina Watercraft Works, Inc.

unread,

Jul 7, 2003, 10:21:00 AM7/7/03

to

Actually, the carb side is the supply. No push rods on 2 strokes.
You can pressure test the motor to verify where the leak is actually
occurring but without the necessary components, you might have a
tough time of it. Best way to get it done without all the fitting you
need is to remove the intake manifold and look around to see where
the oil is coming from. Usually, the inner crank seal fails but I have
seen numerous instances where the RV seal was the culprit.

--
Laszlo Almasi
Carolina Watercraft Works, Inc.
2810-5D Yonkers Road
Raleigh, NC 27604
loba...@mindspring.com

"Carl Gloria" <2live...@earthlink.net> wrote in message news:2d5Oa.31189$C83.2...@newsread1.prod.itd.earthlink.net...

Bill O'Neal

unread,

Jul 7, 2003, 10:24:52 AM7/7/03

to

Laz,
Except if it were the RV seal, it would be getting oil into both clyinders,
not just the back clyinder. My bet is the crank seal.

It is possible that the check valve in the injector nozzel is stuck but I
doubt it. The volume of oil leaked would be much less.

Bill O'Neal
WCM
"Carolina Watercraft Works, Inc." <loba...@mindspring.com> wrote in
message news:be9hlb$om8$1...@slb0.atl.mindspring.net...

Bill O'Neal

unread,

Jul 7, 2003, 10:33:57 AM7/7/03

to

Pressurizing the feed hose and blocking the return hose is not all that
difficult. If it won't hold 6-10 psi for a few minutes, one or more of the
seals are shot.

Bill O'Neal
WCM

"Carolina Watercraft Works, Inc." <loba...@mindspring.com> wrote in

message news:bebvke$ond$1...@slb6.atl.mindspring.net...

Carolina Watercraft Works, Inc.

unread,

Jul 7, 2003, 11:08:30 AM7/7/03

to

But then you need to find out where the leak is. I guess you could just
put it to one or the other and if it is the crank seal(s) then it doesn't
really matter since you'll need a rebuild on the crank anyway. And if
you see air bubbles around the RV seal then you'll know that's the culprit.

--
Laszlo Almasi
Carolina Watercraft Works, Inc.
2810-5D Yonkers Road
Raleigh, NC 27604
loba...@mindspring.com

"Bill O'Neal" <water...@worldnet.att.net> wrote in message

news:pxfOa.43771$3o3.2...@bgtnsc05-news.ops.worldnet.att.net...

Carolina Watercraft Works, Inc.

unread,

Jul 7, 2003, 11:06:18 AM7/7/03

to

I see your point but I have seen times when the RV closed off the front
intake port leaving the rear port completely open for the oil to flow to and
once the rear case half filled up to the intake port it would then fill the front
half of the case. Personaly I feel it is most likely the crank as well but I
don't want to give them the wrong idea to have it happen again only to find
out it was the RV shaft seal.

--
Laszlo Almasi
Carolina Watercraft Works, Inc.
2810-5D Yonkers Road
Raleigh, NC 27604
loba...@mindspring.com

"Bill O'Neal" <water...@worldnet.att.net> wrote in message

news:UofOa.43759$3o3.2...@bgtnsc05-news.ops.worldnet.att.net...