Pela oil change.

mikelamb · Post by **mikelamb** » Sun Mar 23, 2008 9:37 am

Used my new pela pump yesterday, but it took the best part of 4 hours to suck out about 5 litres of oil! Followed the suggested procedure by running the engine for a while to heat the oil, then stuck the pipe down the dipstick hole until a definite contact was made with the bottom of the sump, punped the pela about 15 times and sure enought the oil started to flow, but should it be such a slow process? I had to give up in the end as darkness was falling! Any advice will be much appreciated, Mike.

haydn callow · Post by **haydn callow** » Sun Mar 23, 2008 10:12 am

Shouldn't take more than 15mins...Perhaps the tube opening was "flat" against the sump bottom and couldn't suck properly. Try pulling it back out a centimeter.

mikelamb · Post by **mikelamb** » Sun Mar 23, 2008 10:20 am

Haydn, I tried that and still it made no differance, I think for a test I will try sucking the 5 litres I extracted back into the pela. This should give me a better idea of what's happening.

mikelamb · Post by **mikelamb** » Sun Mar 23, 2008 11:40 am

Just come back in after trying to suck the oil out of the 5 litre can with my pela, in the time that I was there (probably going on for an hour) I only managed to suck up about 3/4 of a litre. It seems to be creating a good vacuum because when I pull the pipe out of the oil you can hear it gurggling. Perhaps the pump is faulty, I cant think of anything else to try as its such a simple procedure!
Mike.

mikeonb4c · Post by **mikeonb4c** » Sun Mar 23, 2008 12:44 pm

Have PM'd you Mike - sorry, did that before I read this. To summarise, there has to be something wrong - Pelas empty the sump in 20 mins or so. Maybe sludge in the sump - I've not heard of it before though, but you will be able to tell by looking at the end of the probe. Other thought - has someone put 100W oil in it -

scanner · Post by **scanner** » Sun Mar 23, 2008 12:57 pm

Do they come with different diameter tubes for different engines??

If so is the one Mike(L) is using too narrow?

mikelamb · Post by **mikelamb** » Sun Mar 23, 2008 7:14 pm

Thanks for your thoughts on this, just wondering how long do you run your engines before you start sucking the oil out. I ran mine for about 10 minutes, is that enough?
Mike.

mikeonb4c · Post by **mikeonb4c** » Sun Mar 23, 2008 7:26 pm

Plenty enough Mike

Nibs · Post by **Nibs** » Mon Mar 24, 2008 3:07 pm

Hi ,did you remember to take off the oil filer cap? otherwise you just form a vacume, mine works in about 20mins,
Cheers Nibs

Veg_Ian · Post by **Veg_Ian** » Mon Mar 24, 2008 5:42 pm

Yes 20 - 30 mins here also. I tend to increase the suction by adding more pumps about halfway through the cycle. Try pumping water which obviously has a lot thinner viscosity. If that takes a long time then you either have a blockage in the pipe or quickly losing suction from somewhere.

mikelamb · Post by **mikelamb** » Mon Mar 24, 2008 8:31 pm

Thanks for your replys, I decided this morning to give the pump another go, firstly using water, (like veg_ian suggests it should be able to do that!) it drained this with no problem (about 3 litres in 5 minutes roughly, perhaps even less time!) So then decided to give the oil from the bongo in the 5 litre can a go, again this seemed slow, decided then to try some new oil I had in the shed (15/40) again seemed slow. So then decided to take a spin back to the marine shop for some advice, the owner is a really nice guy and was happy to refund me, but we tested the pump and all seems fine with it, it creates a really good vacuum which is basically all it needs to do. We came to the conclusion that it must be down to the viscosity of the oil and that perhaps I needed to get the oil warmer than I did before starting the extraction. I'm going to give it another go but this time I will get the engine up to running temp before starting. Any comments are greatly appreiciated,
Mike.

dp bradford · Post by **dp bradford** » Mon Mar 24, 2008 8:40 pm

I used to have a small hand operated pump that would take AGES to empty a few litres, MUCH worse if the oil was cold or semi-cold.

Last time I changed my oil, it was immediately after the engine was at full operating temperature. It took less than 10 minutes to extract 6 litres

Warm your oil up properly!

Dave

bigdaddycain · Post by **bigdaddycain** » Mon Mar 24, 2008 11:26 pm

Perhaps it may have been better to drain the oil half an hour after shutting the engine down after a run mike? You'd be suprised at how "pi55y" the oil is when still hot/warm after a run, as opposed to waiting for the oil to heat up,from cold, on tickover...

I reckon the hot 10/40 semi synth isn't dissimilar in viscosity than straight water?

bongomaan · Post by **bongomaan** » Tue Mar 25, 2008 12:09 am

probably going to sound like a stupid question by why use a pump,is it to avoid going underneath or is it to avoid a mess ?

bigdaddycain · Post by **bigdaddycain** » Tue Mar 25, 2008 12:17 am

A bit of both really...plus, a little more dirty old oil can be extracted via the pump,instead of relying merely on gravity to do the job...

Pela oil change.

Pela oil change.

Pela pump