crankshaft Seal - Low Oil Pressure

mrglass

toyotavanlover
#1
I have a 1988 corolla 4A-F engine. It has been leaking oil from the crankshaft seal for almost a year. I have left it go, as oil loss not that great but a big oily mess in right wheel area. The belts are starting to get oily now so I need to do something. Last week the low oil pressure light is flickering on at low RPM and idle. My question is: can a very bad oil seal cause a low oil pressure or do I now have a bad oil pump? It looks like the oil pump is right behind seal, driven off crank but I am having trouble getting the oil pan down because of 2 screws located above engine support cross member.
 
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