Motor is a 496/385 hp inboard Volvo Penta that I owned for the last 6 years.
For the life of me I can't get the old oil out when doing an oil change. First I tried the manual pumps and after 2 hours I would end up with 4 quarts if I was lucky. Bought a different type manual and same story.
Now I sprung for a 12 volt Jabsco with the same results. The motor is warmed up till the temperature guage reads about 150 degrees. The pick up tube is inserted down the dip stick hole, plastic container is vented. I even removed the oil filler cap.
No matter what I do the oil just slowly sputters up and out. Pump has been running now for 30 minutes and doubt a quart has been sucked up yet.
Tried lowering and raising the trailer as well as moving the plastic pick up tube into different locations.
What the heck am I doing wrong? Once after 5 hours when I finally got up every drop only ended up with 4 quarts and motor is supposed to hold 8. There is a threaded fitting around where you insert the dip stick, what is this fitting for?