Big Negative Pressure in Fuel Tank - Can't get the fuel cap off

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Big Negative Pressure in Fuel Tank - Can't get the fuel cap off (p.2)

2016/11/03 19:55:41

5SGTE

I don't think they block the lines, they simply vent it to the atmosphere. Which the factory set-up does too, cleaned via the cc set up. From memory the little vent is down near the fuel filter.

2016/11/03 20:11:19

5SGTE

http://www.toyotanation.com/forum/129-older-generations-1969-1987/390807-charcoal-canister-maintenance-repair.html#/topics/390807?_k=i3sukg

This may help get a rough idea of how the system operates.

2016/11/04 10:20:22

Reddtarga

5SGTE
From memory the little vent is down near the fuel filter.

On my car the vent is in a corner of the chassis in a black plastic box located just below the fuel filter.
The hose from the bottom of the cc is routed to it.

2016/11/16 20:09:39

Col

Conclusion:

The new fuel filler cap seems to have fixed both problems. No more significant negative pressure and no buzzing. Also so far no more kangarooing. Can't believe that such a simple solution that has fixed both problems. So good to have a niggling issue fixed.

Col

Big Negative Pressure in Fuel Tank - Can't get the fuel cap off

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