how common is oil pump failure?

oscarloco · Unread post by **oscarloco** » 26 Apr 2005, 20:40

After searching the forum, I discovered no threads about oil pump failures.
After that, a question got into my head: Are oil pumps so reliable that nobody in this forum has had a failure?

citroenzx · Unread post by **citroenzx** » 26 Apr 2005, 21:03

cant imagine that they often go wrong, there a simple driven pump thats contantly being lubricated. also in a right bugger of a place if they do pack up!

Oscar Too · Unread post by **Oscar Too** » 26 Apr 2005, 21:30

Oh God Oscar, something else to worry about...

AndersDK · Unread post by **AndersDK** » 26 Apr 2005, 21:42

Honestly Oscar(s) -
It's from '70 cars I have any memory of failing oilpumps. They are inherently reliable by construction principle.
They would usually fail by the sprocket coming loose on the input drive axle - rarely the chain would fail.
No - it's not a nightmare to replace. Can be done removing the oilsump. Not the most expensive repair.

citroenzx · Unread post by **citroenzx** » 26 Apr 2005, 21:58

thas alright to say if you have a pit or ramp

bxbodger · Unread post by **bxbodger** » 26 Apr 2005, 22:07

Anders is right- the pump is constantly lubricated by its very nature!! When they do fail, its usually because an engine is so far gone anyway that swarf gets into them.

Stuart McB · Unread post by **Stuart McB** » 27 Apr 2005, 01:18

Never ever had one go or even know any one who's had one go.

goldfinche · Unread post by **goldfinche** » 27 Apr 2005, 02:59

Hi never had an oil pump fail it'self but have had the drive fail but that was a long time ago.What happened to a friend was that the oil pressure release valve jammed open with something.(never found it).The engine didn't like that much.BX 16 V. Must be quite strong bottom end it survived.
Cheers
Geoff.

Unread post by **Jon** » 27 Apr 2005, 04:02

Yep, thats all true. Never never ever been asked for or replaced an oil pump on an XU, XUD or TU Engine. Ever. I actuallly have the drive chain from an old XUD that I use for various "loosening" jobs to this day.

wilkobob · Unread post by **wilkobob** » 27 Apr 2005, 14:56

Ive not had a pump fail (although i though it did), ive had the strainer become blocked on a 1.0l pugeot 205 (1989 car), took the sump off and removed pump, cleaned all the rubbish out, and put it all back together again, with cheap socket set (2 - 3 years ago when I didnt own that many tools) and some rusty old car ramps. Not a complicated job, just can be a little messy.
The drive to the oil pump on a mates (scrap) astra van has failed, so I suppose they do still go wrong. Incidentally it was a vauxhall 1.7DTL engine with only 130k on it, 1996 N plate. (I know it aint a Citroen, but just an example).
I find the XUD engines a hell of a lot more reliable than the vauxhall "thing". Comming from experience, id never own a vauxhall again, citroens all the way!

littleredrooster · Unread post by **littleredrooster** » 28 Apr 2005, 21:46

Yup, had a XUD7 oil pump failure in a 205 4 years back. Actually, it wasn't the pump, but the pressure relief valve which wore to the point where it stuck open. Took a couple of hours to fix, most of which time was spent trying to clean the joint faces of old gasket!

oscarloco · Unread post by **oscarloco** » 29 Apr 2005, 01:04

<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by wilkobob</i>

Ive not had a pump fail (although i though it did), ive had the strainer become blocked on a 1.0l pugeot 205 (1989 car), took the sump off and removed pump, cleaned all the rubbish out, and put it all back together again, with cheap socket set (2 - 3 years ago when I didnt own that many tools) and some rusty old car ramps. Not a complicated job, just can be a little messy.
The drive to the oil pump on a mates (scrap) astra van has failed, so I suppose they do still go wrong. Incidentally it was a vauxhall 1.7DTL engine with only 130k on it, 1996 N plate. (I know it aint a Citroen, but just an example).
I find the XUD engines a hell of a lot more reliable than the vauxhall "thing". Comming from experience, id never own a vauxhall again, citroens all the way!
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">
When your pump failed, how did it die? You had a whirring sound coming from the sump? Did your oil pressure dropped?

Squareroot · Unread post by **Squareroot** » 29 Apr 2005, 02:42

I have seen a slightly loose crankshaft pulley on a Xantia causing the oil pump drive to slip under load. The symptoms were a noisy engine and oil warning light glowing when engine reved. Pressure check showed pressure ok at tickover but falling away suddenly as the pressure increased. There is no key to drive the pump, the sprocket is just held against a shoulder on the crankshaft. The crankshaft pulley had worked loose and knackered the keyway, crankshaft ok.

oscarloco · Unread post by **oscarloco** » 29 Apr 2005, 05:44

Mine sometimes when accelerating hard drops the oil pressure on 1st but after that it stays at 8 all the time.