Why are the fuel injectors corroding on my Peugeot horsebox?

I have a problem with my Peugeot Boxer horse box. It is four years old and has only done 6500 miles. To date, I have had to replace two fuel injectors which had corroded to the cylinder head caused by water ingress. Now the other two fuel injectors are causing me problems. I have spoken with Peugeot main dealership who tell me that there is no recall on the vehicle nor have they offered any reason why the corrosion has happened or what the likelihood of it happening again is likely to be. The vehicle is kept outside, south facing and is used weekly - journeys are mainly approx one hour each way. Is there anything else that I could do to protect/prevent reccurence?

Asked on 4 July 2017 by Alice Bock

Answered by Honest John
A lot depends on how the vehicle is kept and is used. If it spends a lot of time unused and parked outside then that combination could be the problem. It would appear that the problem is more prevalent on motorhomes and models such as yours that tend to sit stationary for long periods. The rain water gets into the engine compartment via the front scuttle /wiper arms. The reason for your corroded Injectors is due to this water ingress . Have attached a link that you may want to read as it will show you the problems that others have had and what they have tried to rectify www.motorhomefun.co.uk/forum/threads/peugeot-boxer.../
Similar questions
My 2013 Peugeot Boxer had water leak into the engine compartment, this has been happening from new. It's damaged the computer and the ABS system. Estimated repairs are £3000 and the van has only done 16,000...
I'm looking for a good tow car under £10,000 to tow a horsebox with minimum braked towing weight of 3000kg. Running cost and reliability are most important.
I wonder if you could advise me on the best 4x4 to tow a horse trailer and two ponies? Whatever we buy will have to be used for my work and as our family car, so it needs to be as economical as possible....
Related models
Peugeot's equivalent of the Fiat Ducato and Citroen Relay, strong 2.2-litre diesel engines, 100,000 mile warranty as standard.

 

Value my van