This probably has been posted before but what is the easiest way to check to determine if your fuel bladder has collapsed? Second, do you really need it?

I'm not sure exactly what you are questioning about the fuel tank bladder colapsing but you do need it.When they went back to a fastback in 78 they located the tank in the tail of the car and the bladder is in the tank so that if you get rear ended it will help contain the fuel and you might not burn to death.
Steve

Just take a flash light and look inside the tank. You can usually see if it's collasped. The other method is to run the tank low, then fill it up, and see how much it takes. If it holds several gallons too little, you have collaspe.

I used to push them back in place with a broom handle through the filler. Not easy, but possible.

The most common cause of collaspe is the cannister purge system not venting the tank. As fuel is used the tank creates a vacuum, and you get the collaspe.

The purge system could be a plugged filter on the bottome of the cannister, or a pinched or collasped line. The most common line failure in the flexable hose between the steel lines, one steel line at the frame, the other to the tank steel line.

|UPDATED|8/24/2004 7:47:16 PM (AZT)|/UPDATED|