Oil leak from between engine and gearbox!

[In-transit]

Hi,
I have an oil leak from what seems engine and gearbox, cleaned whole area, not from sump (as I hoped!) But from bottom of flywheel casing/engine.
Is it the seals between box and engine?
Do I have to split engine from g.box?
Can it be done in situ or whole engine and box out? I only replaced engine and box 6 months or so ago and put new seals in between engine and box, did I do it incorrectly? Tried Wyn's stop a leak, no change seen really.
Thanks for any answers chaps.
Arran

[MinorMatt]

Probably the rear crank seal.... which would be pull the gearbox out. BUT are you sure its not the rocker cover gasket? That can run down the back of the engine and give a similar effect

[dumper]

Probably the rear crank seal.... which would be pull the gearbox out. BUT are you sure its not the rocker cover gasket? That can run down the back of the engine and give a similar effect

X two on rocker box gasket used to be very common on Ford pushrod engines Petrol and Diesel-and if you do remove the gearbox it’s also worth changing the gasket on the end of the camshaft access cover

[In-transit]

Thanks for that both of you.
I've checked rocker cover gasket after I jet washed engine but no leaks (gutted!) last week. So looks like gearbox off, if that's what's required. I take it that it's easier to do than engine out so you saved me a chore.
Silly me was thinking of engine out instead of gearbox off
Any good advice on fitting crankshaft seals so I don't have this again in 6 months due to my incorrect fitting!
Great forum.
Many thanks Arran

[dumper]

If you have a pit or ramp gearbox out but if I was going to remove the engine I’d take the engine and gearbox out as a lump.some seals now come with plastic sleeve to fit them but in the past I have removed the seal housing and fitted the seal in it .if you decide to leave the housing and on the engine and the seal will not come out with a screw driver or seal removing tool if you drill 3 small holes in seal face equally spaced as you look at the seal you can screw in 3 self tapping screws to pull on one at a time with a set of pliers to pull the seal out.

[cherniy_chack]

Hi,In-transit.
To begin with, engine oil and transmission oil have different odors.
Gearbox oil usually has a pronounced sulfur odor.
Take a sniff of the flowing oil.
If, when installing the motor six months ago, there were no signs of oil leakage through the rear oil seal of the crankshaft, then suddenly it is unlikely to appear.
Very often, a frightening oil leak in the rear of the engine occurs due to the fact that the fastening of the fuel supply pump to the engine block has been loosened, or simply oil flows out through a faulty stem oil seal of this pump.
First check that the pump is secure and that there is no oil leakage from it.
I wish you success!

[MinorMatt]

If you don't need to take the engine out... don't.

I got to the point where I could have a gearbox out, change the clutch and drive away in about 45 mins

[V184]

If you have a pit or ramp gearbox out but if I was going to remove the engine I’d take the engine and gearbox out as a lump.some seals now come with plastic sleeve to fit them but in the past I have removed the seal housing and fitted the seal in it .if you decide to leave the housing and on the engine and the seal will not come out with a screw driver or seal removing tool if you drill 3 small holes in seal face equally spaced as you look at the seal you can screw in 3 self tapping screws to pull on one at a time with a set of pliers to pull the seal out.

Its normally the seal housing gasket that fails

[cherniy_chack]

Its normally the seal housing gasket that fails

Such a spacer is cut in 10 minutes from a piece of thick paper or thin cardboard.
I find material for such gaskets in garbage containers from many products.
Sometimes these are advertising posters.
I think that the rear crankshaft seal is unlikely to wear out in six months, and the second booster pump can unscrew easily.

[dumper]

If you have a pit or ramp gearbox out but if I was going to remove the engine I’d take the engine and gearbox out as a lump.some seals now come with plastic sleeve to fit them but in the past I have removed the seal housing and fitted the seal in it .if you decide to leave the housing and on the engine and the seal will not come out with a screw driver or seal removing tool if you drill 3 small holes in seal face equally spaced as you look at the seal you can screw in 3 self tapping screws to pull on one at a time with a set of pliers to pull the seal out.

Its normally the seal housing gasket that fails

True but I have had one go

[gotgcoalman]

Change from 5w to 10w or even 15w engine oil.
Might help,might not

Sent from my Plus E using Tapatalk

[Islander71]

Might not apply if its a new seal, but I have used "Rislone Main Bearing Seal repair" additive with some success, though you have to replace it with every oil change.

[In-transit]

Thanks for the advice chaps.
I have taken that all on board. For now (too busy with other transit issues at mo!) I've put some wymnns stop a leak in, seems to have stopped leak for now. I'll attempt a 45 min gearbox off and 3 screw seal removal tricks when I have sorted other issues.
This site is the best reason the internet exists in my view.
Many thanks Arran