did you take the oil pan all the way off to replace seal?..also what kind of oil pan gasket did you use?...which ever gasket you used has a front rubber seal. they are very easy to slide off the back side of the pan or get cocked side ways etc....
here is how i seal my pans up..
i get the 1 piece gasket (fel-pro) $30.00..It has the steel inserts where the bolts come thru so that you cannot over tighten and squeeze out the gasket..i then take the part where the front seal meets the side rail gaskets and i cut the front seal part off with a razor blade.....
then i take the side rail gaskets and glue them in place on block or you can use some gasket maker..whatever will hold it...then i i take the front seal and glue it to the bootm side of the timing cover using the YELLOW GORILLA SNOT...I then go back over the bottom side of the gaskets with the ULTRA GREY GASKET SEALER..make sure to get it heavy in the corners where the rail meets the front and rear seal..place the pan up to the motor and bolt together..i never have had any problems doing it this way...if you do this as i say you will stop your leaking..
I have had problems with leaks just putting it on as the book says to..
ps..the Gorilla snot..is really 3m super weatherstrip adhesive (yellow)part# 08001
you can buy it at any advance auto etc...many engine builders use this stuff the glue on valve cover haskets etc...
brian
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Bjuice..
"I'M YOUR HUCKLEBERRY ! "