skyline with vapour lock?

[Spook's_Skyline]

today in brisso its 33 degrees (feels like more)

for the first time evar today my skyline wouldnt start after a lengthy drive during the middle of the day (to get tyres and intercooler quotes), the petrol tank was full but after lots of driving it was half emptied today

we got home and wifey went to start the car and it wouldnt turn over

plenty of clicking and wirring, no ignition

when she got out of the car there was a loud (easily audible) sucking noise from the petrol tank cap

the other day i had to open it because i could hear the pressure behind it

she did the same

there was a loud rushing of air sound and when she retried starting the car started straight away

this sounds like vapour lock to me

is it just because its so hot today in brisso and we used so much fuel?

do i have a tank breather hole blocked?

the car is midway between its 100k service (all the easy stuff done, the timing belt and a few gaskets, plus cooling fan are being done on monday)

should i mention it to my service people?

[Trust33]

Skylines have a breather hole im pretty sure....At least thats what i have allways thought the little hole under the petrol cap was.

Check to see if your battery clamps are on tight.They sometimes work loose and show the accessories on the dash but when it comes to start it just clicks.

why not mention it.