Vocational, Technical or Tra 28 satisfied customers. I have to open manually, but I cant get the petrol cap open..lever. Hi! Strange one this, my electronic key doesn't open the car anymore so I have to open manually, but I can't get the petrol cap open ! I need to fill her … read more. Hi. Well, I've done everything I can to rectify this problem. The car when started from cold will quickly start smoking usually white smoke this can get quite bad leaving a big cloud behind the car a quick dab of the accelerator and it will stop but slowly come back again until after a few minutes the car is warm and the smoking stops altogether. Eolys is metered into the tank depending on how much fuel you add. The Picasso is a heavy car and accelerating/braking has a drastic effect on fuel consumption. Steady speed on a motorway under cruise control gives best consumption and if you have the patience then 56mph on a hot day will return over 60 mpg. Consider to support my channel and all the hard work put into it at http://www.patreon.com/LMAutoRepairsThank youHiThis car came to me with a non working fue In almost 20 years of Citroen ownership I’ve found the posts and advice on the forum really useful in helping with common minor issues, but now I actually need some help with is looking like a big issue! The car that is causing the problem is a 2012 Grand C4 Picasso 2.0 HDI with around 80k on the clock, owned from new. The turbo failed on my C4 Picasso. The car is 4 months out of an approved used car warranty and the dealer has told me they have received notification from Citroen that the problem is due to a known fault. The dealer has requested a contibution for parts but must still charge me £1200 labour. This is £800 for the turbo replacement labour and another £400 to replace injectors. However Use some anti-seize agent to unlock your fuel cap of your Citroen C4. First alternative and the one you should reflect on first. You have the opportunity to unseal your stuck fuel cap, to achieve this you will need to use a WD40 anti-seize type product to lubricate the barrel of your cap. Don’t hesitate to put some in quantity and wait Available fuel types (which is best for you?) diesel, electric, petrol 2021 Citroen C4 in-depth review. News. Our cars: Citroen Grand C4 Picasso, Honda Civic Tourer, Lexus IS 300h. News The latest recall action was on January 20th, 2021. Check also how many CITROEN cars are Still on the road in UK. The details of the recall actions that are related to CITROEN C4 PICASSO are shown bellow: Click on a CITROEN C4 PICASSO recall Action number to see the detail of the retail action and the affected VIN (Serial) numbers. Number. Date. There are numerous reasons why your car could be giving off smoke. Some of the most common causes include: leaking head gaskets. defective coolant systems. burnt electrical wires. worn pistons. faulty fuel valves. To work out what’s causing the smoke, check: where the smoke is coming from. aVuUN.