spraying "SeaDoo Lube" in the cylinders

[windsurfertx]

Because it was in the manual, I have been removing spark plugs and spraying seadoo lube (excuse me, bomardier lube) in the cylinders. I wonder if this is really neccessary? I doubt other people are really doing this.
Can ya'll elaborate on this subject? If it is neccessary to do, can you give a step-by-step procedure.
-thanks in advance

[windsurfertx]

oops, I should have stated my jet-ski is a 2001 GTX-DI.
thanks

[Bryan Glynn]

It's not needed whatsoever unless you are storing it. I know it's in the manual, and no it won't hurt anything, but all it will do if you are using the ski regularly, is cause you to buy plugs more frequently and purchase the lube.

[Bill O'Neal]

I do not fully agree with Bryan here.
Most people do not ride their ski as often as they would like to, nor as often as some others.
If you are used to seeing the bores in these motors after a week or so of storage, there is usually a fine coating of rust all around the clyinder wall above at least one piston on a two clyinder motor. That is because one exhaust port is allways open when the motor is shut off. Condensation from the wet muffler will come through the exhaust system and collect in that clyinders dome area. Sometimes you will see slight rust on the sparkplug too.
It NEVER hurts to lubricate the clyinders. If you don't overdo it, the oil will burn off of the sparkplug quickly and it won't foul the sparkplugs. Even if it does, you can buy alot of sparkplugs for the price of a rebuilt motor. A couple cans per year of fogging oil is well worth the investment.

[Bryan Glynn]

I guess we can better define 'using the ski regularly' - I mean at least once a week - but you are right, most people will not use it that much and will have slight coatings of rust.

Everytime I see someone lube a cylinder like that they end up putting way too much in and fouling the plugs in no time - they end up needing fresh plugs almost everytime they use the ski. So let's also better define how much to spray for that periodic spray - I would recommend sticking the straw in the hole and spraying for about 1 second, rotating all the way around the cylinder, then bumping the engine over to distrubute the lube. Most people I see spray for a good 5 seconds figuring more is better.

[windsurfertx]

You guys are good. I really appreciate the response you've given. What you say makes sense, I can work with that.
Now....
Should I be spraying the lube down the spark plug holes for about one second, put the plugs back and not connect the plug wires, crank the engine a few times, then connect the plug wires and let it set.
Or..pull the plugs, spray for one second put the plugs back in and let it set?
Additionally I spray into the air box. Would this be sufficient. would the lube spray get into the upper part of the cylinder and protect it while it was setting there for a few weeks.

I did notice after I got the ski back from the dealer there was a tad small bit of what would/could be the beginnings of rust on the plugs. This was on the face of the plug, the metal ring that surrounds the insulator around the electrode. This really bothered me. Because it was only a day after it had been run by the dealer who took a check out ride after installing a new air injector assembly. I don't think he even flushed it afterwards.

I'll ask my next related question in a new thread.

[Bryan Glynn]

Spray, replace the plugs, bump it over, reconnect the wires and you're good to go. Keep fogging the case through the airbox like you have been, if you are storing for weeks at a time.

[Sharky]

My 2 cents here, I may be due change...

Bombadier lube is necessary anytme you have allowed water into the motor or will not be riding your doo for more than a week.

The crank shaft in a Sea Doo motors, pre 2002 anyway, does not sit in oil like a car crank shaft does. Since we ride these things in water, moisture can and does make it into the intake in small amounts. Even a mist of moisture making it past the rotor valve can and will cause corrosion in the motor. Usually if even a slight amount of corrosion makes it to the finger bearings in the crank it causes engine failure at some point.

Can one get away with not using bombadier lube? Sure they can, but if one rides theirs like I ride my xp it is wise to not forget it. A quick spray of bombadier lube into the intake after riding can displace any moisture and save big $$$ in engine overhauls.

The majority of overhauls we have done in the past have been from moisture damage to the crank. Often, especially on the 135 hourse motors, the crank goes and then it takes out the stater. So 7 bucks for Bombadier lube that will last for 1bout 10 days of sea doo fun is a small price to pay to avoid a couple thousand dollars in repairs.

Alan