Fuel in the lower case?

TypicalGuy · Apr 25, 2022

Hello first time posting and new to the form. Figured I join considering I just bought a beat up 2000 Blaster and will need all the advice I can get.
Anyway I drained the oil from the case and fuel poured out!
Any ideas how this would happen?

Larry's Shee · Apr 25, 2022

How do you know that it was fuel? Smell ?

Several things would have to happen (all at the same time) for enough fuel to make it into the trans. The float would have to stick with the fuel on. The crank seal would have to be leaking for the fuel to make it from the crank area to the transmission.

TypicalGuy · Apr 25, 2022

Smell and viscosity, color as well. If I known what was going to come out I would have taken a picture or not have bought this ATV in the first place

TypicalGuy · Apr 25, 2022

TypicalGuy · Apr 25, 2022

That hose was connected to the carb. It didn't seem to be correct

Larry's Shee · Apr 26, 2022

TypicalGuy said:
That hose was connected to the carb. It didn't seem to be correct

I can’t see well enough, you talking case vent hose right next to the intake ?? If so depending on exactly where on carb it could get some other places maybe a lot, such as overflow. Jumps and bumps over time could splash a lot eventually. That reply was easier than the first

Larry's Shee · Apr 26, 2022

BTW, that hose should loop up and over the steering stem

Larry's Shee · Apr 26, 2022

If new to you, should do a leak down test

TypicalGuy · Apr 26, 2022

Larry's Shee said:
If new to you, should do a leak down test

I started taking it apart already, they used insta gasket so I figured I would replace all the upper gaskets. I heard about a leak down after the fact. I found the manual PDF on here which has really helped.

TypicalGuy · Apr 26, 2022

Larry's Shee said:
BTW, that hose should loop up and over the steering stem

Yeah the case vent hose was in the over flow.

CycleTech · Apr 27, 2022

Judging by the presence of RVT for a base gasket I would say that the entire motor is suspect at this point. God only knows what stupidity lurks within.

TypicalGuy · Apr 27, 2022

I started a rebuild thread if you are interested. Yeah I didn't like the RVT but I got the bike cheap.

Larry's Shee · May 1, 2022

TypicalGuy said:
I started taking it apart already, they used insta gasket so I figured I would replace all the upper gaskets. I heard about a leak down after the fact. I found the manual PDF on here which has really helped.

I use this for the base gasket
https://www.amazon.com/dp/B000HBNUDQ/?tag=jyj356j5-20
Intake/reed gasket and sealing cases
https://www.amazon.com/dp/B007TWXI1K/?tag=jyj356j5-20
And this for things that I might take apart and don’t want to ruin the gasket. Such as clutch cover.
Been using this for 50+ years
https://www.amazon.com/dp/B000HBM6NG/?tag=jyj356j5-20

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Fuel in the lower case?

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