thanks guys.
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thanks guys.
Old thread, but working on engine installation for my rebuild project. The engine, with mount, oil tank and all was mounted on a stand for the last 10 months or so. I got it on the airplane, and went to turn the crank and it would not budge. Pulled the top plugs and the #4 was full of oil. I mean the top plug came out soaked in oil. Pulled all the bottom plugs and #3 also had some oil in it but not as much. Finding this thread, I understand it now, but is the quantity of oil I found concerning or should I just chalk it up to sitting for 10 months, do a prop pull-through on every preflight and just forget about it? Or, is there possibly a check valve or something like that I need to replace?
Thanks
Always pull it through before starting.
Always use a Rotax oil filter. They have a check valve that *helps* prevent this from happening.
^^^^^^^^^
This!
I have had this happen twice in seven years. Both times when the engine sat for a few months. I ALWAYS pull the engine through before starting. Always the left rear cylinder. Model IV with 912 ULS.