Question about Harley Davidson FXST Softail Standard Motorcycles

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Hose from back of crank case with a mini filter on it spits about a pint of oil out after bike sits for two weeks, is this normal? and does anyone have schematic for oil lines for 1991 softail. i do have aftermarket oil bag and cooler on it. Thanks!

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Oil can drain down from bag if sitting a while it drains to engine there was & maybe a check valve in the rt side rear of cam cover area. it looks like a big screw. in there is a spring then a steel ball remove & clean check ball for pits & seat area on hole. some draining is normal..ride safe..

Posted on Apr 01, 2011

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I have a hose with a filter attached to it on the right side of the bike and every time i start the bike oil flows out of it?


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I have a 1990 harley fxr and when you start the engine oil starts leaking out of the crankcase breather what would cause this


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Bike began running rough so I changed the oil, cleaned the K&N air filter and now the 2003 FatBoy Fuel Injected, dies after about 20 seconds of idling and is gurgling and spitting massive amounts of...


"Oh, and now I can\'t even read the oil level on my dipstick due to the fact it is significantly LOW" This is not a good sign. Now, my expertise is NOT on the Twin Cam bikes but I do try to help when I can. In your case, if your engine were an earleir Evolution or Shovelhead engine, I'd say that you had sheared a scavenge gear drive key in the oil pump. Now, I do not know a thing about the oil pump in a Twin Cam as I've never worked on one. It sounds like your oil pump is not scavenging (sucking) the oil out of the engine and pumping it back to the oil tank. Once the pump pumps the oil into the engine, it stays there. Thats why you're seen the "massive amounts of oil spitting out of the little hoses behind the air cleaner". Take your bike to a dealer or qualified shop as soon as possible and I'd refrain from running it. An engine full of oil would also expain why the engine does not want to run as well.

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2003 Fatboy while winterizing drained the oil very little came out however there was oil in filter..New filter,filled with oil started sounds like usual then the oil shot out of the cap where you insert...


On the softail model Harley Davidson's the oil tank is external and sits up higher than the engine crank case and oil pump. when these bikes sit for an amount of time the oil gravitates from the tank to the crank case. starting may seem sightly harder and seem like the battery is going dead. the bike should be started in knowing that you had oil in it to start with and no giant leak puddle underneath of it. warm up the engine and then drain the oil out of the tank. the reason why your filler cap popped off is because you had probably 2 1/2 to 3 quarts to much engine oil in the bike. so drain the oil from the tank at the drain pug at the bottom of the hose on the high (right side ) of the bike where the swing arm meets the frame (it is a 5/8 socket) put the drain plug back in run the bike for about 5 minutes inspecting with a flashlight continuously that oil is circulating back into the tank. then dran it again and replace with new oil.

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