You really shouldn't have petrol fumes in the cabin from that, though it wouldn't hurt to stick the ond air cleaner back on & see what happens. My brother had a ZJ fairlane, & we converted the carby six to XF EFI. We did it at a mechanics' workshop, we mainly did most of the work, but our mate ( the mechanic ) did some of the work, anyway the point is we had a similar problem after the conversion. What had had happened was that our mate had accidently got a vacum hose for the heater, which was meant to plug into the inlet manifold, & plugged it into the charcoal canister instead. You haven't touched any vacum hoses have you?
Who said white is poxy!!!!!!!!
Proud owner of a 2000 AUII Falcon S ESP