Oil leak from engine (Pictures)

ChiefSeason · May 3, 2016

My 2-stroke engine is pretty new, total of about 10 miles I would say.

Every time I go for a ride, I get this leak. My head bolts are torqued to 12 ft.lbs. Does anyone know why this is happening and what I can do to fix it?

http://imgur.com/a/K60MO

2door · May 3, 2016

Firs let me welcome you to the forum. We're glad you've joined and we hope we can help you.

From the photo it appears the cylinder to case gasket is leaking. Since you have torqued the head correctly I have to assume the gasket is defective. Not too common but it happens. New gaskets are available from many vendors but you can also seal that area with a good automotive quality gasket sealer such as Permatex.

Repair will necessitate removing the cylinder. You'll then need to compress the piston rings when you reinstall it. Make sure the rings are aligned with the alignment pins in the ring grooves while inserting the piston back into the cylinder.
Good luck. Let us know if this advice helps.

Tom

crassius · May 4, 2016

wipe it carefully & try to spot where it first appears - sometimes this is just a defect in casting around that front case bolt - many new motors come with an extra washer there now, or an o-ring under the bolt head

if that isn't it, you may have a leak at the base gasket that may be fixable by putting some non-hardening permatex form-a-gasket on it

ChiefSeason · Jul 18, 2016

Hey guys thansk for the replies. I know I'm late but i just removed the jug and put some "Red RTV High Temp Gasket Maker" by Permatex.

I'm worried because on the back it says "NOTE: Not recommended for use on head gaskets or parts in contact with gasoline."

Do you guys think it'll be okay? Back when I was shopping for gasket maker I could never find one that didn't say something like that.

crassius · Jul 19, 2016

you didn't say if you still had the old gasket or were putting it on bare

when I have a base gasket, I just let it soak a few minutes in 2-stoke oil and install it

without a gasket, I'd use non-hardening permatex - it isn't a really critical spot though, so RTV should work OK

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Oil leak from engine (Pictures)

ChiefSeason

New Member

2door

Moderator

crassius

Well-Known Member

ChiefSeason

New Member

crassius

Well-Known Member