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| Joined: | 07-10-2012 |
| Location: | Whitehills , United Kingdom |
| Posts: | 168 |
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The 'small' hose on the UK spec GT anyway, is to prevent siphoning and should have a restrictor in it - it allows a small amount of fuel to be pumped directly back to the tank and ensures that the fuel line is not pressurised against the carb float valves with the ignition off.
Other possibilities are tank cap not venting allowing pressure to build up on a hot day, faulty float valves, car parked nose down hill (syphoning) or a combination of these. Hope this helps.
Gordon