Fuel cap open -> air pressure
- Hound
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- Qashqai Model: Still looking for one....
I don't know - I have a diesel, I won't need to put fuel in it until 2017. Kidding apart... yes it is normal, especially when fuel is low.
Used to have 2015 1.6dCi 130 Xtronic N-tec+ in Gun Metallic
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- Location: Berlin, Germany
- Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)
See if this helps you - Dave
Fuel System Design : As your car drains fuel from the fuel system, fresh air must come into the
gas tank to take its place. A small amount of suction is necessary to ensure an
uninterrupted flow of fuel. Excess suction leads to a vacuum in the tank that
makes it difficult to remove the gas cap for refilling. There are a handful of
different features in all fuel systems designed to vent fresh air back into the
tank, preventing a strong vacuum.
Gas Cap : Most caps
for the gas tank feature a vent built into it that allows vapors to escape from
the tank, while drawing fresh air in. When this vent becomes blocked or
damaged, a vacuum may build up. The cap will be hard to pull off when fully
unscrewed. You will also hear a loud pop or sucking noise when you do remove
the cap. Cleaning buildup out of the cap vent or replacing the cap with a new
unit stops the problem.
Fuel System Design : As your car drains fuel from the fuel system, fresh air must come into the
gas tank to take its place. A small amount of suction is necessary to ensure an
uninterrupted flow of fuel. Excess suction leads to a vacuum in the tank that
makes it difficult to remove the gas cap for refilling. There are a handful of
different features in all fuel systems designed to vent fresh air back into the
tank, preventing a strong vacuum.
Gas Cap : Most caps
for the gas tank feature a vent built into it that allows vapors to escape from
the tank, while drawing fresh air in. When this vent becomes blocked or
damaged, a vacuum may build up. The cap will be hard to pull off when fully
unscrewed. You will also hear a loud pop or sucking noise when you do remove
the cap. Cleaning buildup out of the cap vent or replacing the cap with a new
unit stops the problem.
11.19/1.3L/160PS/Tekna+/DCT/PrOPILOT/KAD Gun Metallic/Trunk Lower Finisher/Rear Glass Finisher/Ambient Lighting-LED’s Innen/Entry Guards Illuminated/Sport Pedals/Front Styling Plate/LED No.Plate/Chrome Door Handles/Rear Valance/Giacuzzo Alloys + Falken
hi Dave, holes in gas caps is a bit old style.. Environmental unwanted.Modern cars have variations on the following technology. Every car builder has his own variant.see i.e:http://www.agcoauto.com/content/news/p2_articleid/294
QQ 1.6Dig-T Tekna