broncosfan
New Member
Hello. I own a 1989 FXSTS with about 40000 miles on a rebuilt engine. For about the last 3 months or so, every time I start the engine the oil dipstick plug gets blown off, and oil spits out the filler neck. This happens any time I start the engine, hot or cold. The bike runs qreat after starting and no performance loss in noticable. A mechanic told me this is caused by sumping. How would I go about repairing this problem myself? I realize I could pay a mechanic to correct this, but I would like to do it myself if possible. Any good advise will be appreciated. Thanks. RJV