bypassing oil injector

[robksu2000]

Hi,
I am new to PWC's. I have 2 boats, but got a pair of 2000 GTX sea doo PWC for christmas. My wife found a good deal (I hope) and got them for me as a surprise. My father in law knows a guy who has a repair shop for these PWC's and he winterized them, went thru them and said that the oil injectors were bypassed and that I should mix the oil 32:1 or 50:1.
I pre-mix the oil on my 50hp Johnson outboard b/c I bought 2 oilers within the last 3 years - I was tired of this so just bypassed. No problems (yet) other than a little more oil in the water at idle.
Can this be done safely with a PWC like these? I want to do what is right by them and don't want to risk loss of performance, etc if I just mix the gas/oil. I don't mind the extra step it takes - that doesn't bother me, but I want to make sure it won't damage anything on the watercraft.
The gentleman who winterized the PWC's recommended that I change the sparkplugs after running the engine about 30 min or so. I was reading in the owner's manual (that I purchased online) that one should put the plug wires on a plug wire holder (for lack of a better term) - why does that need to be done? Do these engines go thru spark plugs quickly? How often (on avg) do they need to be changed?
Thanks for helping this "newby" to PWC ownership! I'm sure that I'll have many more questions!

Rob

 

[dlowings]

Hi,
I am new to PWC's. I have 2 boats, but got a pair of 2000 GTX sea doo PWC for christmas. My wife found a good deal (I hope) and got them for me as a surprise. My father in law knows a guy who has a repair shop for these PWC's and he winterized them, went thru them and said that the oil injectors were bypassed and that I should mix the oil 32:1 or 50:1.
I pre-mix the oil on my 50hp Johnson outboard b/c I bought 2 oilers within the last 3 years - I was tired of this so just bypassed. No problems (yet) other than a little more oil in the water at idle.
Can this be done safely with a PWC like these? I want to do what is right by them and don't want to risk loss of performance, etc if I just mix the gas/oil. I don't mind the extra step it takes - that doesn't bother me, but I want to make sure it won't damage anything on the watercraft.
The gentleman who winterized the PWC's recommended that I change the sparkplugs after running the engine about 30 min or so. I was reading in the owner's manual (that I purchased online) that one should put the plug wires on a plug wire holder (for lack of a better term) - why does that need to be done? Do these engines go thru spark plugs quickly? How often (on avg) do they need to be changed?
Thanks for helping this "newby" to PWC ownership! I'm sure that I'll have many more questions!

Rob

Lots of interesting questions Rob, here is my take on some of them. I use to own a 2000 GTI and loved it..

I ran premix 50:1 for a while and it worked without issue.. There is what is called a block off kit for this set up, and if you use the seadooforums search you can find a few links about how to set it up.. If I remember right it was a matter of installing a plate and removing what I'll call a very small drive pin from the oil pump., but like I said there is a guide on the forums in the search..

The grounding posts that you talk about for the plug wires, ALWAYS use them.. This will protect your MPEM from shorting out, without a working MPEM your skis will not work, and it can not be by-passed.

Sparkplugs, for the 2-cycle skis I always had two extra sets of plugs with me at all times in the storage area under the rear seat. Also, there should be a nice little BRP tool kit that came with the skis, that has a plug tool. I always tried to keep these together.

 

[seadoosnipe]

Welcome..

Welcome to the forum!!!! I wish my wife would buy me a nice pair of GTX's for Christmas. Hopefully, she got a great deal!..

These skis have the largest 2 strokes made by Rotax, the 951cc. I hate to hear the oil injection has been disabled, this will cost you a fortune in oil. The 2 stroke Seadoo's use a non NMMA, non TCW-3 low ash oil. DO NOT USE any other oil to premix with. You should premix 40 or 50:1. If your fouling plugs (which should last a complete season if not 2), then they may be premixing too rich. The Seadoo's use a variable rate injection system, so the mix is constantly changing as the motor speeds up and slows down. If you decide to keep these, I would recommend you look into repairing that system. In 2 or 3 years time, the money spent in repair will be recouped in the added cost of premix oil.

When working with the spark plugs, you are putting your wires on the "grounding lugs", which are two aluminum posts for grounding the ignition system. This is usually for doing a compression test. Which I DO recommend before you start to put any large amount of money into them. This will tell you the condition of your pistons. The compression should be about 140. If you got a spread between your pistons greater than 10 psi, that's usually considered that you may begin to have problems.


Congrats on the new purchase!....:cheers:

 

[robksu2000]

thanks!

Wow - I think I'll have someone local here check these skis out and look into hooking the oilers back up. I want these skis to last me awhile. I will have them check the compression and see how much to get the oil injectors working well again - how much would you anticipate that to cost, on avg?
I suppose it would be good to develop a relationship with a local service place. These skis were purchased in GA and I live in Upstate SC.
I appreciate the super fast response!

Rob:cheers:

 

[seadoosnipe]

Turning a wrench

Rob, most members here, come in when they have had a bad experience with service shops. There are a good few out there, but also many that are greedy, want nothing but your money. Their going labor rate will be anywhere from $60 to $100 bucks an hour.

If you have any experience with using a cresent wrench and pliers, you'll find members here more than willing to help walk you through some of your maintenance.

With the premium membership, if you like, I'll walk you through what I can personally. Feel free to PM me. I PM'd you earlier to welcome you.

The 2000 GTX is a nice machine. I own the 97 model GTX and wouldn't trade it for the world...(well, if someone offered me the 2008 or 09 RXP or RXT, I'd really have to think about it...LOL):cheers: