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Corrosion on oil sump pan, crossmembers, pipes etc. |
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speedfix
 
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  Member No: #1043
Location: south west |
"there should be a little clearance allowing for the sump to dry, i.e not be constantly wet." If the car is used in the wet and on short journeys the sumps will not dry out. Damp air and winter salt with condensation with a cold sump will be a problem. Engine is oil cooled and water heated on short runs IMO. The under tray should have clearance with the sump or rubbing will be a problem with corrosion. |
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321dave
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  Member No: #614
Location: Dublin |
Hi guys, I realised also (forgot to mention) the tray was slightly open with the front (smaller tray under radiator) missing about 5 screws where they meet up (had C6 undertray fastening kit, and replaced 5 new screws) as well, so the previous garage work wasn't great. I'm seeing a lot of problems that had been left get worse by previous owners, I'm the third owner now! But I'm determined not to let this car go! Will go again at cleaning this up at the weekend. Kind regards 321dave |
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e3steve
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 Member No: #1163
Location: Warsash, Hants & Palma de Mallorca, Spain |
321dave wrote ... Eeeewwww... Dave, you need some minor oil leaks!Image of sump is upside down. But the corrosion is clearly visible. What would the best course of action be here? It's not weeping oil yet? The sump was also covered from below, so not sure why its so bad.  If it were mine looking like that then I'd treat the corrosion with an inhibitor and leave it at that. Years ago such inhibitors were available with a name like 'Naval Jelly'. Most bodyshop suppliers or motor goodies shops should have something similar. It turns black when brushed onto corrosion, converting same back to de-oxidised metal by purging the oxygen content. |
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321dave
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Member No: #614
Location: Dublin |
Thanks for the tip Steve, my previous 09 C5 which I've had from new and was maintained (serviced) by myself had a sump like a brand new car after 5 years! God only knows how this C6 was treated or mistreated by the previous owners. Considering the sump is only probably 2 years older than my old X7 model C5 the condition is seriously bad for me. I wouldn't be happy until I replaced it with a new sump. I found other points of amazing corrosion in the car as well, but I'll start a new tread for those amazing images. Many thanks for your many forum posts! They are a great help for a Citroen person starting to turn around a slightly run down C6, but hopefully by the time (5 years later) I'm finished it will be like it just left the factory. Kind regards 321dave |
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C6Dave
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  Member No: #1
Location: Northumberland |
321dave wrote ... Many thanks for your many forum posts! They are a great help for a Citroen person starting to turn around a slightly run down C6, but hopefully by the time (5 years later) I'm finished it will be like it just left the factory. It's only recently they developed a process for the Forth Bridge whereby they no longer finish painting at one end and start again at the other. I can foresee your C6 being an ongoing restoration unless it's cosseted in a heated garage and never used in the wet 
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321dave
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Member No: #614
Location: Dublin |
C6Dave wrote ... It's only recently they developed a process for the Forth Bridge whereby they no longer finish painting at one end and start again at the other. I can foresee your C6 being an ongoing restoration unless it's cosseted in a heated garage and never used in the wet Hi C6dave, I have a feeling your most probably right about that! But in the mean time (between restoration) the car is already providing plenty of Citroëns famous attributes, space and comfort. Maybe not quite at DS levels of comfort, but it's not doing much wrong on that front. But the rust is becoming a issue in itself now!! |
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gmerry
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 Member No: #21
Location: Scotland |
Hi Dave, the "process" they developed for the Forth Road Bridge is EXACTLY the same as the one I prescribed when this topic was first posted. The key is in the preparation and the application of the MIO high build intermediate layer. No magic process, just good preparation and a high quality paint system. Regards G |
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321dave
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Member No: #614
Location: Dublin |
gmerry wrote ... Hi Dave, the "process" they developed for the Forth Road Bridge is EXACTLY the same as the one I prescribed when this topic was first posted. The key is in the preparation and the application of the MIO high build intermediate layer. No magic process, just good preparation and a high quality paint system. Regards G Hi G, will start now to look towards fixing these rust problems. Some rust treatments to start with and replacement parts (oil sump) and a few screw fixing which have also corroded badly even under the bonnet. It seems the C6 has it main corrosion issues on the front? Kind regards 321dave |
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gmerry
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Member No: #21
Location: Scotland |
Hi Dave, the worst corrosion I found on my C6 (which I attribute to Scottish grit and saut) was around the rear centre spheres and the attached piping. I ended up replacing both rear centre spheres because of the depth of pitting. Mostly it's hidden by the plastic cup shaped deflector thingy, this needs to be removed to get a good look. Regards G |
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C6Dave
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Member No: #1
Location: Northumberland |
Why not get a new one and coat it before fitting? 0301Q9 Engine Oil Sump 2.7 HDi - £131.39 inc Vat 030457 Sump Gasket - £20.60 inc Vat That's at UK Main dealer retail prices.......... |
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321dave
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Member No: #614
Location: Dublin |
gmerry wrote ... Hi Dave, the worst corrosion I found on my C6 (which I attribute to Scottish grit and saut) was around the rear centre spheres and the attached piping. I ended up replacing both rear centre spheres because of the depth of pitting. Mostly it's hidden by the plastic cup shaped deflector thingy, this needs to be removed to get a good look. Regards G Hi G, i will take another look around the rear of the C6 this weekend. Thanks for that tip! I most likely will have the same issues. I have more images of similiar corrosion on going with the front cross member directly behind the front number place holder.(apologies Dave if this should be on a differant tread) kind regards 321dave   
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321dave
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Member No: #614
Location: Dublin |
C6Dave wrote ... Why not get a new one and coat it before fitting? 0301Q9 Engine Oil Sump 2.7 HDi - £131.39 inc Vat 030457 Sump Gasket - £20.60 inc Vat That's at UK Main dealer retail prices.......... Hi C6dave, thank you for the prices and details. I was thinking exactly the same thing, and as with the corroded coolant pipe previous discussed, it appears the paint finishes used on the parts are not strong enough for as G said earlier Scottish winters or indeed winter conditions here in Ireland. Particularly over the previous few winters when the weather was quite bad here. I will keep photos coming of the corrosion if people find it useful. kind regards 321dave |
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C6Dave
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Member No: #1
Location: Northumberland |
Might be an idea to keep the main corrosion areas together so I have changed the thread title..... | ||
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