Diesel leak...

Philip Chidlow · Post by **Philip Chidlow** » Thu Sep 01, 2011 10:09 am

docchevron wrote: I assume it's dripping down the front of the sump? Or the cambelt cover end of the sump?

It's hard to tell, especially as normally it's parked with it's nearside up on the kerb, so a leak will naturally drip from the offside quarter of the sump. I still haven't discounted leak off pipes but once I've parked it on level ground for a while and run the car until the problem manifests itself again (it didn't last night), I should have a better idea.

citronut · Post by **citronut** » Fri Sep 02, 2011 8:17 am

there shouldnt be any prob finding leeky leak off pipes, if they are leeking they will be wet all the time,

regards malcolm

Philip Chidlow · Post by **Philip Chidlow** » Fri Sep 02, 2011 9:41 am

I think it's a pump seal at the cambelt side. Something I need to get fixed next week, as I don't want diesel to end up on the cambelt.

citronut · Post by **citronut** » Fri Sep 02, 2011 8:12 pm

on the pump i fitted a new seal to years ago the sprocket had its own built in puller to remove it,

regards malcolm

Post by **docchevron** » Fri Sep 02, 2011 8:39 pm

some do, some dont. Dead handy when they do though!

If it's been leaking out of the nose seal, you'll want to replace the cam belt anyway!

Philip Chidlow · Post by **Philip Chidlow** » Sun Sep 04, 2011 5:07 pm

Picked up a Citroen OE cam belt at Little Horwood for a fiver. The one on there was only done 6k miles ago, but I will definitely fit the new one. Same for the auxiliary belt as it's quite narrow and runs the compressor for the ac as well as the alternator. While all this is being done the compressor can be replaced with the one I have sitting here, but first the system needs degassing.

Philip Chidlow · Post by **Philip Chidlow** » Tue Sep 06, 2011 3:14 pm

Transpires the leak - and it is minor - is from the rear area of the pump and not from either side. The cambelt isn't being contaminated and the pump doesn't appear to leak noticeably (it certainly doesn't drip) when it's running. But stopped, after a few seconds you'll get a few drips from the front of the sump adjacent to the filter/alternator.

Taking it down to Kermit on Friday where hopefully we can effect a repair. Fingers crossed. Kermit certainly seems confident it's not too serious.

Post by **Defender110** » Tue Sep 06, 2011 3:41 pm

Sounds like it might just be a seeping injector pipe, I find a cure for this is just to slightly undo the offending pipe before re-tightening which normally reseats the pipe curing the seep.

Post by **mat_fenwick** » Tue Sep 06, 2011 3:45 pm

There is a little cover low down (both sides) on the Bosch pump covering the timing mechanism. It's possible that is leaking - I've had that before. I had to take the pump off to replace the O ring though.

EDIT - when you say the rear of the pump do you mean as viewed from the front of the car or from the cambelt end? If the latter I would be inclined to agree with Kevan.

Philip Chidlow · Post by **Philip Chidlow** » Tue Sep 06, 2011 8:13 pm

A bit of both - it's behind and possibly to the right - as you face it from the front of the car. Anyway, it certainly doesn't leak enough to make me a menace to other road users (especially bikes) so I'm off to Worthing on Friday morning and let's see what the Green Frog can do

citronut · Post by **citronut** » Sat Sep 10, 2011 1:47 pm

i have been told by a diesel fitter that if the one way valves at the feed and return banjo unions stick, this can/will cause presure build up and leakage from any seal/s,

regards malcolm

Philip Chidlow · Post by **Philip Chidlow** » Mon Sep 12, 2011 11:18 am

Hi

Well, we have located the leak, and not been able to fix it. The leak's not bad - leaving a drip here or there, but it is a problem.

It's at the back of the pump - facing it from the front of the car - where the two bodies of the pump meet. Kermit (Phil Boxall) checked, cleaned and tightened what he could, but we need to remove this pump and fit another (a better option than repairing the existing for us). Although Phil has at least one spare Bosch pump these are from turbo diesels - will that make a difference?

Alternatively can anyone please help if they have a 99% known-decent pump from a 1.9n/a? If you can get it to Kermit he can get it cleaned and checked over by the local marine diesel place, and assuming it passes the test, it can be swapped with mine (which will then be offered for refurbishment if anyone wants it).

Before the pipework was removed and cleaned...