Sump Oil Extractor Pump.

[Paul1977]

Hi all, im currenlty having problems trying to change my engine oil. I bought a pela 6000 oil extractor this week, were you stick the narrow extractor pipe into the dipstick hole and just pump out the oil. But the problem is even though the pipe is never sturdy and narrow, within the dipstick pipe it tappers off to allow just the thin part of the dipstick. Is there a way the dipstick pipe could be removed temporalry ?? If not this brings me onto my idea of fitting a perminant sump mounted hand pump as seen on most marine engines. Does anybody know the were I could get one of these with the connecting pipes made up for a BMC 2.2 ??? If not does anybody know the sump plug size so I could could try and get one made up ??

Also another quick one, my oil pressure stays pretty much at 20psi whist idle or running and my temps stays within 75-80. Is this ok or does it sound like oil presure relief valve is stuck open ?

 

Cheers for any help or suggestions given in advance.

 

Paul

[bigste]

Oil pressure does drop on tick over, that's the norm but can't help with the other.

[Scholar Gypsy]

What oil pressure do you get when the engine is cold? If 20, that does sound rather low.

[Bloomsberry]

What grade of oil is in the engine ?

 

When I had my engine first serviced (BMC 1.5) I was told that the oil pressure was low due to engine wear and they had to use a thicker grade (SAE 30) to increase the pressure.

Since then I"ve learned that SAE 30 oil may well be the correct grade for BMC 1.5 anyway but there are differing opinions on this. When I changed the oil myself recently I checked with the chandlery just to get their opinion and they specified SAE 30 for a BMC 1.5 so I"m pretty happy about it.

BTW the pressure my engine maintains is 50 PSI which I think is the correct pressure for a BMC 1.5.

[Timleech]

Could be a faulty gauge.

 

 

Tim

[gazza]

I'd go with Tim, 20 psi all the time suggests faulty gauge.

You should expect min 40 psi at operating speeds above 1000 rpm and 20 psi at idle

[Paul1977]

Hi all, when I bought the boat the marina did a service on the engine. What this service constisted of I dont know but I do think they used a light weight oil as I've checked the dipstick consistancy and it was very runny. This is is why after reading up on older BMC's and how they prefer a heavier 20/50w I was thinking of dropping the other oil and filling with 20/50w. Also with the oil pressure readings staying at a constant 20psi (but it did go upto 30 once) Im thinking maybe the Pressure relief valve it stuck or something. Also with the temprature at a constant 75 and not boiling up I wonder if maybe the oil guage is faulty ??

[gazza]

Only way to check once and for all is to change to an API cc 20/50 oil. We use comma. Change oil filter too, use a reputable brand such as Mann, coopers, fram etc. You then need to get hold of a reliable pressure gauge, remove the electrical (assuming its not a capillary type) sender and test the oil pressure. That way you will be 100% of what's going on.

 

As for temp, that sounds ok, it could have a thermostat from 65 - 88 odd degrees fitted.

[Paul1977]

Thats sounds like a plan, but my main problem is getting the old oil out of the engine. If I can find/access the sump plug I might have to drain it the old fashioned way and fill the bilges up with oil .. The joys of boating !!

[bizzard]

I wouldn't hesitate to check the oil pressure relief valve for sticking just off its seat. Pretty common on these engines and the other BMC's petrol and diesel, always was common particularly if the engines not used much and oil changes have been neglected. All it needs is a tiny speck of metal swarf to get to it and either jamb the valve or get trapped under its conical seat. The valve and spring are found behind the large unmistakeable domed nut on the side of the cylinder block.

[Paul1977]

Cheers bizzard, im shooting off to the boat later today and will pop it out. I've got the 2.2 manual on the boat so I can clean and check the spring size. Next is to work out how to get the old oil out .. doh !!

[bizzard]

Cheers bizzard, im shooting off to the boat later today and will pop it out. I've got the 2.2 manual on the boat so I can clean and check the spring size. Next is to work out how to get the old oil out .. doh !!

You should with a bit of contortion drain the sump into the drip tray and bale, mop or pump it out of there instead.

[Mac of Cygnet]

Hi all, im currenlty having problems trying to change my engine oil. I bought a pela 6000 oil extractor this week, were you stick the narrow extractor pipe into the dipstick hole and just pump out the oil. But the problem is even though the pipe is never sturdy and narrow, within the dipstick pipe it tappers off to allow just the thin part of the dipstick. Is there a way the dipstick pipe could be removed temporalry ??

 

Are you extracting the oil when it is fully hot? These extractors take absolutely ages or don't work at all with cold oil. Also gunge in your sump could block the narrow pipe. If the wider part of the pipe will fit down your dipstick hole, there's no reason why you shouldn't take off the narrow part, if it's a push fit, or even cut it off above the join. Also try jiggling the tube around a bit, feeling it hit the bottom of the sump, and bring it up slightly. You're never going to get all the old oil out with an extractor, but sometimes there's no alternative. I flush out what I can with a cheap oil, running the engine until it too is hot and suck that out before adding the 'proper' oil, whatever that may be.

[PhilR]

IME the pressure relief valve on the Pela extractors doesn't seal too well. I removed mine and stuck some duct tape over the hole. It now performs much better.

 

Edited in case anyone thought I was talking about pressure relief valves on engines !!

Edited May 15, 2013 by PhilR

[bizzard]

IME the pressure relief valve doesn't seal too well. I removed mine and stuck some duct tape over the hole. It now performs much better.

I know your game, your experimenting with ''dry sump'' or ''total loss'' lubrication, aren't yew.

[Timleech]

If the relief valve were faulty, I'd expect the pressure to drop right down on tickover, not steady at all.

 

Tim

[bizzard]

If the relief valve were faulty, I'd expect the pressure to drop right down on tickover, not steady at all.

 

Tim

I agree Tim, just thought I'd mention the relief valve as they can be troublesome on those engines and are-should be easy to check and clean.

[MtB]

You should with a bit of contortion drain the sump into the drip tray and bale, mop or pump it out of there instead.

 

Yes just remove the drain plug, let it all gob out into the bilge under the engine, then use a cheap wet N dry AquaVac off ebay or from B&Q and hoover it all out from under the engine with total ease.

 

Never mind messing about with Pela pumps and all that....

 

 

MtB

[Paul1977]

Well just got back from the boat and as hard as I tried could I find the sump plug, could I hell. I felt everywhere I could under the sump but couldn't find it. Also I tried to undo the relief valve nut but no joy as I couldn't get my spanner round the nut due to the oil filter pipes bracket was in the way. Still I did drain some oil out and top up with some 20/50w which did push the pressure up past 25, so it looks like a heavy oil is the way to go. But as for getting the old stuff out I'm all out of ideas ..lol

Cheers

Paul

[Speedwheel]

Yes just remove the drain plug, let it all gob out into the bilge under the engine, then use a cheap wet N dry AquaVac off ebay or from B&Q and hoover it all out from under the engine with total ease.

 

Never mind messing about with Pela pumps and all that....

 

 

MtB

 

But you'll make it all dirty under the engine!!!!!

[MtB]

But you'll make it all dirty under the engine!!!!!

 

You obviously haven't seen under REGINALD's engine.... it would make it WELLCLEANER!

 

MtB

[Grace and Favour]

But as for getting the old stuff out I'm all out of ideas ..lol

Cheers

Paul

A length of fine PVC pipe (that will fit down your dipstick hole)

Suck up the engine oil to within an 1" of the end/your mouth

 

Pinch the pipe

 

Lower the end to below sump level, and let it syphon out

 

Go for a brew whilst it all dribbles out