Corrosion Potential - Help and advice needed!

[freckle]

Hi
I have come to the forum for advice!
I have an issue with my car and its injectors. They are made from steel and housed in an alloy guide tube (possibly aluminiumalloy but don't know 100% for sure). They have all seized-corroded in the guide tubes. Apparently this is due to dissimilar metal corrosion or galvanised corrosion. Apparently metals can be measured due to their corrosion potential.
Can anyone elighten ,e a little omre about his-preferrably in layman's terms?!?
Many thanks in advance!

[Gordon]

Hi Freckle

to the Surface Engineering Forum.

Sorry, a little short on time, so I will have to come back to this later.

I will change your thread title though if you don't mind.

[karunanidhi]

Hi
I have come to the forum for advice!
I have an issue with my car and its injectors. They are made from steel and housed in an alloy guide tube (possibly aluminiumalloy but don't know 100% for sure). They have all seized-corroded in the guide tubes. Apparently this is due to dissimilar metal corrosion or galvanised corrosion. Apparently metals can be measured due to their corrosion potential.
Can anyone elighten ,e a little omre about his-preferrably in layman's terms?!?
Many thanks in advance!

Hi,

If you can post the photographs we would be able to evaluate the actual problem on the surface of the component

[Gordon]

Hi Freckle

Try this

https://www.gordonengland.co.uk/corrosion.htm

[freckle]

Hi
Totally forgotten I'd put the question on here-suddenly came to me in the bath!!
Photography is a problem-the issue is not quite as clear as it seems...
The problem is not one I have found-it has been discovered by the dealership my car was at. My engine failed in my Citroen C8 and this was the initial problem-they couldn't access cylinderhead as all 4 injectors were seized. Eventually it was sent away to an engineering company who had to brea them to remove then-this and replacement of new injectors came to �1200. The fault was then found in the cam mechanism. 20 weeks and a huge bill later the car is ready but 3 days before pickup I find details that this is a common problem in the models between 2003-2005 due to a design fault allowing water into the cam. However everyone also has seized injectors. I have learned about the makup up of them from a mechanic online and since been researching dissimilar metal corrosion as part of my battle against Citroen-need to sound like I know what I'm talking about! Car is now back as the dealearship were threatening legalities against us if we didn't pay up, so I don't have injectors and guide tubes seperate to photograph-just an engine! However-might be able to get our local garage to have a tinker for free and get some pics if this would help?
Thanks for replies-will check out the link now too.
Have also change to receive email notification too now so won't forget about the posting!!

---

Hi Freckle

Try this

https://www.gordonengland.co.uk/corrosion.htm

Argghh-simple terms needed-I have given birth 3 times which massively reduces your brain power!!
Will read through tonight when sproglets are in bed and have some peace.....