Hey guys need advice on a lifter pump. I was under my truck yesterday Looking to do a coolant flush and oil was all over the bottom of my engine. I took a look and the lifter pump was the source of the leak. I pulled the oil dipstick and It didn't smell like diesel so I'm thinking it might just be a bad seal on the lifter? It's leaking quite a bit but I don't have much time or money to fix it...Is it gonna be a big problem if i leave it alone for awhile or am I in trouble of fuel gettin in the crankcase? If i pull the lifter is it better to just replace it or reseal it? How much does a new lifter cost and how hard is it to replace?