Gas smell in trans oil

[Mav]

Since I haven't had my 2000 KDX220 long, I'm still making my way through everything. This weekend was fork oil and seals (the oil was BAD), coolant flush and fill with engine ice, and trans oil. When I drained the oil, I noticed that it kinda looked like the oil from our drag car, so I put some on my fingers and smelled it, it smells like it has a little gas in it.
I have flooded it a few times and forgot to turn the petcock off. I'm wondering if this is connected to my issue of not being able to idle, adjust idle, and why it takes several kicks to start once warmed up vs 1 or 2 kicks when the engine is cold.
My buddy said his yz250 was similar issues when he needed a topend.

[ohgood]

there is no easy path for fuel to get into the transmission oil. if the combustion chamber was flooded completely, it would have to blow a seal to get into the trans

[Mav]

that's what I thought. I read about porous castings, was that year specific?
Or maybe the fuel smell was just in my head because i was in my garage.

[ohgood]

that's what I thought. I read about porous castings, was that year specific?
Or maybe the fuel smell was just in my head because i was in my garage.

no idea about it being year specific.

I would pull the side covers and fill the cylinder with premix to check for seepage

[Mav]

That's a good idea, I hadn't thought of that. Thanks

[Mav]

I really need to do a compression test also, but I can't find my tester since the move. Guess it's time to buy another.

[Timtee]

I really need to do a compression test also

Pressure and vacuum as well. Seals may leak under one condition but not the other.

[Mav]

Will do

[david]

I would start with just a trans fluid change and then re-check after riding it some.

Quick story.....When I first got the old 175, the petcock had been left on and the trans was full of gas. It also would not start in this condition. I didn't know the trans was full of gas until I wore my self out trying to get it started and the gave up and decided to do some regular maintenance on it. After I changed the trans oil, it fired right up and it ran well for years. Didn't use any trans oil either.

[bufftester]

The only way for fuel to make it into your tranny is through the crank seal. Leakdown test will tell you if they are bad.

[Mav]

Pulled stator cover to get ready for leak down. There's about 1-2 tablespoons of fluid that smells like old gas, but nothing like the 100LL that I run.
Compression test showed 150psi

[Julien D]

Compression test will not show leaky crank seals. That requires a leakdown test. However, if you have fuel mix in the stator, and fuel mix in the trans, there is little doubt that your crank seals are shot.

[Mav]

Can't find my leak down tester and don't really feel like piecing one together again, so I will have to order one and wait for it to come in.