[DML] fuel pump / tank problem - Can anyone HELP???
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[DML] fuel pump / tank problem - Can anyone HELP???

Since having my fuel sending unit replaced, I've had a problem of my 
fuel pump vibrating and humming loudly. I thought the problem was 
heat related, but recently the problem started occuring in cooler 
weather too. Its now so bad that within 10 minutes of running the 
car, the fuel pump starts humming very loudly.

What's odd is that the pressure balance in my fuel tank is screwed 
up. When you stop the engine and take the gas cap off a whosh of air 
gets sucked in.

But tonight something different occured. I took the gas cap off 
after drivng the car for an hour and a steady stream of hot air/fuel 
vapors came out. It was *extremely hot*. It blew out in a stream 
(like when you blow thru a straw) for a complete 2 minutes. Later in 
the evening when I got home the pump was humming very loud, I took 
the gas cap off with the engine running and boom - like Old Faithful 
the gas gurgled up and spewed out the fill spout in a stream about 
12-15" high.  The entire hood of the car, windshield, and 
myself were covered in gasoline. Thank goodness there was no 
ignition source or I'd be a roman candle. I jumped in the car and 
shut the engine off.

I had the guys at Delorean One replace the venting pipe and tubes 
which did not solve the problem (don't mind though since my original 
components were such a mess anyway).

Does anyone have any idea as to what's going on? I'm getting fed up 
with this. I don't like messing around with fuel vapors and the fuel 
system for obvious reasons.

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