Technical Ducato 2014 rusty injectors.

[Bosshaug]

I have purchased the used motorhome. A 2014 Ducato 2.3 manual gear. Has the usual issues of leaky scuttle area etc.
Injectors are rusty but perhaps not the worst I've seen. Runs well and only 43000 km on the clock. Here are some pics of the injectors. Plan to clean the area and use copper spray as a rust inhibitor. Will try to spray only on the injectors as copper can react with aluminium.
I have heard that the injectors of good quality and can last up to the engines lifetime. By looking at the photos can anyone confirm the injectors type/model (Fiat or Merc) and if the rust attack looks bad? Any advice appreciated.
Thanks and pleased to hear.

 

[bugsymike]

Others may give more detailed advice, but personally I wouldn't use the copper spray, just clean off and give a coating of something like WD40 spray on a regular basis. The surface rust is on quite a heavy piece of metal so probably not likely to cause an issue. Plus the copper spray is a conductor so you wouldn't want any near the injectors etc. electrics.
To me the injectors look like Bosch type.
Galvanic corrosion is the affect on dissimilar metals, helped by water/road salt etc.

 

[Bosshaug]

Others may give more detailed advice, but personally I wouldn't use the copper spray, just clean off and give a coating of something like WD40 spray on a regular basis. The surface rust is on quite a heavy piece of metal so probably not likely to cause an issue. Plus the copper spray is a conductor so you wouldn't want any near the injectors etc. electrics.
To me the injectors look like Bosch type.
Galvanic corrosion is the affect on dissimilar metals, helped by water/road salt etc.

Thanks Bugsymike

 

[Communicator]

I have a memory of copper and iron being sufficiently separated in the electrochemical series, that galvanic action can occur.

When perhaps some 55 ago, somone noticed surface rust on the injectors of my diesel Land Rover, the comment was that they had not previously seen a diesel engine as dry (leak free). Those were the days when you had to actively seek diesel pumps in rural areas.

 

[Pugglt Auld Jock]

Like Mike above, I'd not be especially reaching for the copper grease for this. If you want to go with a grease then a ceramic based high melting point product would be better. I use two. This one: https://silverhook.co.uk/Grease-Ceramic-Anti-Seize-500g is quite loose, sloppy and semi liquid so might work well on in this case. The other I use a lot on brakes and is a much more solid product: https://www.opieoils.co.uk/p-140336-granville-ceramic-brake-grease.aspx A bit of external surface rust isn't going to be a big problem though.

The big problem, of course, as always, is not the bits you can see but where the injector is buried in the head. There's a whole business model built around specialists who, with expensive hydraulic gear, will come to you to extract seized in injectors - just as an example, here's one: http://www.apautodiagnostics.com/injector-removal-service These people wouldn't exist if injector pulling was an easy job!