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Re: Oil Extractor not extracting. Why?
Posted: Wed Nov 01, 2023 11:19 am
by DFWdude
The extractor line’s tip is cut on an angle, to prevent sealing in case it bottoms out.
Re: Oil Extractor not extracting. Why?
Posted: Wed Nov 01, 2023 11:22 am
by DFWdude
DEcosse wrote: ↑Wed Nov 01, 2023 11:15 am
I just thought of another quick test - remember trick of putting a straw in a drink, then sealing the opening with your finger and you pull out the straw and you have a straw full of liquid?
Put your hose (alone, not connected to pump) down the tube to the length that equates to your dipstick length;
seal the upper end of the hose with your thumb, then pull hose out;
you should have oil in the bottom of hose same as level indicated on your dipstick
I have not done this yet, but have verified fluid level on the outside of this line to match dip stick level.
Re: Oil Extractor not extracting. Why?
Posted: Wed Nov 01, 2023 5:25 pm
by bruceb58
DEcosse wrote: ↑Wed Nov 01, 2023 10:37 am
If I'm interpreting correctly what you're saying (i.e. no line down through the dip tube, just connected at the top), how does that get the oil from the sump below the end of the dipstick tube?
The dipstick tube goes to a fitting where the drain plug of the pan normally is on an automotive engine. Been this way since the OMC days way before Volvo took over. OP even showed a picture of it. Why anyone would stick a smaller diameter tube down the dipstick tube is beyond me.
Even Mercruiser does it this way now.
Re: Oil Extractor not extracting. Why?
Posted: Wed Nov 01, 2023 7:04 pm
by DEcosse
Ah OK, I had my automotive hat on there!
So is this the case?
dipstick_tube.png
Re: Oil Extractor not extracting. Why?
Posted: Wed Nov 01, 2023 7:08 pm
by DFWdude
It does not go beyond that bend as the level reading would then be useless
Re: Oil Extractor not extracting. Why?
Posted: Wed Nov 01, 2023 11:34 pm
by bruceb58
The Volvo 8.1L engine actually also has a drain plug on the opposite side of the pan. It's at the same level as the fitting for the dipstick which is why the fitting at the top of the dipstick tube works just fine.
https://propridemarine.com/sump-v2-volvo-penta-3861304/
Re: Oil Extractor not extracting. Why?
Posted: Sun Nov 05, 2023 7:20 am
by stifflkd
You may just want to invest in a Jabsco hand pump that threads onto the dipstick like others have mentioned. I have used one for years until yesterday when I noticed a crack at the top. I resorted to a pump that requires sticking a tube down like what you have. It works great on my SeaDoo but it could not pump out the oil. IDK, maybe unless the tube is fully submerged in the sump there is a tendency of sucking air.