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Model specific boards => Golf mk2 => Topic started by: tobz. on 04 December 2006, 15:49

Title: Oil pump???
Post by: tobz. on 04 December 2006, 15:49
I think I know the answer to this one but wanted to check!

Driving along the M11 on saturday in the gf's 1.6 driver when the oil light started flashing, pulled off at the next exit and it sounded like an old fiesta with the tappets clattering away.
The oil pump's sh@gged right???
After being left for some hours at lakeside the light stopped flashing and the noise had gone (no permanent damage then) but after about 20miles on the way home it all started again. Yesterday I used some engine flush then changed the oil and filter, we went for a drive and it all seemed ok, yay!!! Until I told her to rag it for a bit this time we got the light and the buzzer of doom.

Sounds like a new oil pump needed???
Difficult or easy job???

Typical as we bought her new car yesterday so now the driver is for sale and I don't know whether to fix it or sell as is.
Title: Re: Oil pump???
Post by: rubjonny on 04 December 2006, 15:59
try another high pressure warning switch, its the white one on the oil filter housing.
Title: Re: Oil pump???
Post by: tobz. on 04 December 2006, 16:26
That was my first suspect jonny until I heard the rattling tappets, hearing that I would say it is accurately reporting low oil pressure.
Title: Re: Oil pump???
Post by: Agreeable Slick on 04 December 2006, 16:30
It's very rare that an oil pump will fail...  :undecided:

Did you take the sump off and inspect the return pipes? They are usually the first subject of fault, as they just get bunged up. It would also explain the running fine then going off again as all the stuff is recirculated from the bottom of the sump.
Title: Re: Oil pump???
Post by: tobz. on 04 December 2006, 16:34
Hmmm good point slick, what do you mean by return pipes though???
Title: Re: Oil pump???
Post by: Agreeable Slick on 04 December 2006, 16:43
had a quick check through etka and this is the best pic i could find.

(http://img.photobucket.com/albums/v623/slicko1/pickup.jpg)
Title: Re: Oil pump???
Post by: tobz. on 04 December 2006, 17:02
Ah right nice one, I'm not too familiar with the pump but isn't the highlighted part the pickup tube??? I've heard the mesh on them can become blocked which could restrict the flow of oil into the pump causing low pressure.

Would definately like to get this one sorted otherwise I'll have to sell the car as requiring attention which will seriously affect the asking price.
Title: Re: Oil pump???
Post by: rubjonny on 04 December 2006, 17:04
other thing I'd check is the oil filter.  Is it a decent german quality one?  The cheaper ones don't have a bypass valve for when the filter gets blocked up
Title: Re: Oil pump???
Post by: Agreeable Slick on 04 December 2006, 17:05
aye pick up/return it's the same thing.

The mesh on them is the main concern as like above they get crapped up very easily. If it keeps doing it as you pointed out then don't drive the motor, as constant starvation of oil to the head will only cause problems and be very costly.
Title: Re: Oil pump???
Post by: tobz. on 04 December 2006, 17:08
Aye jonny genuine vag wouldn't use anything else ;)

Cheers Slick I reckon for the cost of a sump gasket it's gotta be worth a look. The missus is only driving a couple of miles to work and back at the minute and if you drive it like miss daisy the problem doesn't occur.
Picking up her new motor on thursday so after that it wont be used anymore.
Title: Re: Oil pump???
Post by: Gambit on 04 December 2006, 17:22
when your going to take the sump of, make sure you attempt the sump nut in between the gearbox housing.. majority of sockets are too wide to get up into it. and it can be very annoying if you undo them all only to find you can get the final one off!!!

but yeah pickup pipes can get clogged up. thats what caused mine to go into meltdown this time last year!!
Title: Re: Oil pump???
Post by: rubjonny on 04 December 2006, 19:39
get the gearbox dust cover plate off and invest in some wiggle extensions, its the only way!
Title: Re: Oil pump???
Post by: Notis_kr_16v on 04 December 2006, 22:13
my friend i had the same problem with you!inside the oil tank (sump) at the bottom of the engine there is plastic cover which separates the oil and keep it down from the crankshaft!this could break into pieces and block the oil pump!but the only way to find out is to take the sump of!
Title: Re: Oil pump???
Post by: tobz. on 16 January 2007, 09:56
Thread update: Took the sump off at the weekend and found a shocking amount of large carbon deposits clogged up round the mesh and sitting about in the sump. Dug all the cr@p out from round the mesh then gave it a soak/blast with some degreaser, wiped the sump out and got it looking all shiny. All back together and after a 20mile blast no more oil pressure woes :)

After seeing all the cr@p in the sump I'll definately be adding a pump/sump cleanup to the list of jobs I'd like to do to my motor when I get a minute. For the sake of £8 for a gasket it's gotta be a good idea.