Just bought 01 blazer with 55,000 miles from a dealer. My question is that later tonight I did some running around and started hearing this popping noise comming from the back end somewhere. The best I can describe it is that itsounds like someone is pushing the muffer in and out and making a tin popping around a large air chamber. I parked the blazer and came inside and heard it twice inside with the car off. Any thoughts

 

Noise is coming from gas tank. Just filled tank and still making noise. Anything to worry about.?

 

id check all the mounts and make sure its bolted down good and snug. also check the lines going from the tank to the filler.

 

I 'be never heard of a gas tank popping before. This is a new one on me. I'd be interested in hearing what you come up with as the problem.


then again, the fuel system is a closed circuit and works off vacuum. Maybe your missing some rubber around the mounts?