Waxy Build Up - Beginning To Hate Winters!!!!

Every winter since I have owned my C3 Picasso I have had issues with an engine warning light coming on and a loss of power.

The first time this happened I spoke to my local dealership who suggested it was likely to be due to the fact that I fill up at Tesco and their fuel has an additive that waxes up at low temperatures and causes a blockage.

As I say, I get this every year. Usually it clears itself after a while, however this year I have not been so lucky and have had to pay to replace the fuel filter.

Has anyone else had problems with this? I find it hard to understand why I am being advised not to use Tesco PFS'. Is this issue unique to Citroen?

I hope I'm not alone and that others may have some advice.

Thanks for reading!!!!

Welcome to the forum andrewrussellday

however this year I have not been so lucky and have had to pay to replace the fuel filter.

The fuel filter should be replaced every 4 years or 40,000 miles, but I think it could be changed a bit more frequently. Drain the water out every time the oil is changed or at least, every year.

I find it hard to understand why I am being advised not to use Tesco

I regularly use tesco fuel on my diesel C3 and don't have the problems you describe, but it never gets that cold down in the South and the fuel filter get changed every 20K miles or so (every couple of years).

Every winter since I have owned my C3 Picasso I have had issues with an engine warning light coming on and a loss of power.

With the engine warning light coming on there will be fault codes stored, these in turn can help identify the problem. It would be interesting to see if the error code relates to a fuel supply problem or something else. Use a cheap OBD2 reader (from here) to read the codes and these can help you pinpoint the problem.