What caused it (filler cap)

keeny · 01-03-2008, 01:19

This has never happend to me before, I went to put some petrol
in and when i turned the filler cap to remove it i noticed
a compressed air came out, i felt it on my hand
as if some one was blowing on me, what can cause this..... :? :!:

Giggsy · 01-03-2008, 10:15

I always thought it was air gushing in after car had been given a spanking, but i've never felt it, just heard.
Unless its presure been released as the pump is presurising the tank with the return fuel?

just my couple of guesses Ry

Tony · 01-03-2008, 10:17

Hi Keeny
air was going in, to replace the space left by the fuel leaveing
:smile: Tony

jims-terrano · 01-03-2008, 11:22

All Nissan petrol engines do it, well I worked with em until the late 90's and they all did. Now they have changed models who know's. Yes it is air going in. Also the engine doesn't run properly with one of those emergency filler caps fitted.

Jim T

thor · 01-03-2008, 11:22

It is normal

keeny · 01-03-2008, 14:30

thanks very much to you all 4 your replys
hope 2 cu soon... :smile:

: 8) :wink:

01-03-2008, 01:19	#1
keeny Junior Member Join Date: Feb 2008 Location: s, yorkshire Posts: 24	What caused it (filler cap) This has never happend to me before, I went to put some petrol in and when i turned the filler cap to remove it i noticed a compressed air came out, i felt it on my hand as if some one was blowing on me, what can cause this..... :? :!:

01-03-2008, 14:30	#6
keeny Junior Member Join Date: Feb 2008 Location: s, yorkshire Posts: 24	cheers thanks very much to you all 4 your replys hope 2 cu soon... :smile: : 8) :wink:

01-03-2008, 10:15	#2
Giggsy Senior Member Join Date: Sep 2007 Location: YORKSHIRE Vehicle: T2 2.7 TDI LWB Posts: 137	I always thought it was air gushing in after car had been given a spanking, but i've never felt it, just heard. Unless its presure been released as the pump is presurising the tank with the return fuel? just my couple of guesses Ry

01-03-2008, 10:17	#3
Tony Senior Member Join Date: Dec 2004 Location: shropshire Vehicle: D22 Navara Posts: 442	Hi Keeny air was going in, to replace the space left by the fuel leaveing :smile: Tony

01-03-2008, 11:22	#4
jims-terrano Senior Member Join Date: Sep 2004 Location: UK Posts: 12,965	All Nissan petrol engines do it, well I worked with em until the late 90's and they all did. Now they have changed models who know's. Yes it is air going in. Also the engine doesn't run properly with one of those emergency filler caps fitted. Jim T

01-03-2008, 11:22	#5
thor Senior Member Join Date: Oct 2007 Location: Warrington,Cheshire. Posts: 268	It is normal