fuel tank has air inside and does not fillup


Asked by Sep 19, 2014 at 05:09 AM about the 2006 Ford Bantam

Question type: Maintenance & Repair

airlock in the fuel tank is preventing tank from filling up

3 Answers


It's not an airlock' in the strictest definition, it's part of EVAP emissions system. When you fill up, the gas going in displaces air and gas fumes and those fumes (are supposed to) go in to a vent from the tank to a charcoal filled canister the soaks up the fumes, instead of coming out in your face and in to the air we all breathe. The fumes in the canister are purged by intake vacuum when engine is started. You have either a blocked vent tube, a bad valve or the fumes are not being purged and have collected so much there is liquid gasoline in the canister, backing up and not allowing the air/fumes in. You need to have it looked at by a mechanic. This is a diagram of how it works, generic, not your car exactly but same basics.. Click image to size up

54 out of 54 people think this is helpful.

Another example. That is why one of, if not the most common causes for a CEL (Check Engine) light to come on is a missing or non-sealed gas cap. The ECU can detect that as a leak

7 out of 7 people think this is helpful.

click for full screen

4 out of 4 people think this is helpful.

Your Answer

Add photo

Related Questions


Looking for a Used Bantam in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.


Search Ford Bantam Questions

Ford Bantam Experts

#1 FordNut
Reputation 670
#2 Joel Mearns
Joel Mearns
Reputation 440
#3 MrRocket12
Reputation 430
View All