A few bottles of Sea Foam will clear that upAlso. The OP is older than me and the old Brigs & Tucumseh's I have from my family were from back when the owners book says non-detergent oil. I dunno how old his engine is but dumping some new high detergent oil in there will loosen a bunch of stuff. It will need a short oil change interval. Probably a couple. Oh well.


















