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04-12-2012, 08:33 AM #1
Why you should fog your motor!!!!!!!!!!!!!
Here boys and girls is why you should fog your motor if it's not going to be used for any lengths of time, the compression in this motor was down to 90/106/110, the owner thought he had a blown head gasket but instead it was alot worse. Now it's time for a rebuild and over bore, 2 sizes over He thought that just because he stored it inside all winter that it would be ok NOT to fog the motor..............He was wrong!! Don't make that mistake and think you know it all, you have no idea whats going on inside of your motor and the conditions that may be present that would do this kind of damage. This is an expensive mistake, a $10 can of fogging oil or a $3000 bill to rebuild................Which one do you want. Like the old saying goes, " you can pay me now........OR you can PAY me later "
Chose the now!! Enjoy the pic's
04-12-2012, 09:27 AM #2
Awwww man that's NASTY! Good post, seems like I remember a forum member the other day posting that he never fogs the engine and seemed quite sure it was a waste of time........
04-12-2012, 09:29 AM #3
What year is this ski? that looks like more than one sittings worth.
what was his compression before?
04-12-2012, 09:47 AM #4
04-12-2012, 10:26 AM #5
- Join Date
- Sep 2009
I don't disagree with your point about fogging; it should always be done before allowing a ski to sit for any appreciable amount of time.
However, there is more wrong here than just lack of fogging. The primary reason for fogging has to do with the fact that all Sea Doo engines use water in the exhaust system for cooling. This makes the inside of the entire exhaust chamber sit at 100% relative humidity. With the older 2 strokes, there was no way to seal off the exhaust chamber from the cylinder, so fogging was imperative for these engines. However, a 4-TEC engine is supposed to always stop with all the valves closed, effectively sealing the cylinder from the high humidity of the exhaust. (but the exhaust valve stems are still exposed to high humidity, which is why the early exhaust valves tend to rust)
Consequently, you shouldn't see corrosion like you see in that engine from the main source of humidity. So where did all that moisture come from, to cause all that cylinder corrosion? Leaky head gasket? Intercooler leaking, so that when it was originally shut down for storage, it had a high amount of moisture coming into the engine?
Anyway, the main point of this is that on rebuild, he better figure out what was wrong, because if it isn't fixed, even fogging won't preserve it in the future.
04-12-2012, 06:46 PM #6
with the long intake runners it is very hard to get a good fog job and there are other fuel system parts that need lube now that we are burning e10+
here is my fix to this problem, just put in lots of 2-stroke oil in your gas tank and then you will lube the fuel pump fuel injectors and the cylinders
04-12-2012, 06:59 PM #7
04-12-2012, 07:28 PM #8
That's how mine looked after setting 3 months with a leaky intercooler. Thinking it was injector problem I didnt fog it.
04-12-2012, 07:51 PM #9
- Join Date
- May 2006
04-12-2012, 09:11 PM #10
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