Fueling issues-Possible venting issue in gas tank??
This is a discussion on Fueling issues-Possible venting issue in gas tank?? within the Dodge Dart Mechanical Problems forums, part of the Dodge Dart Forum - Pit Row category; See above for slight update....
See above for slight update.
Did you notice the grade vent valve and fuel inlet check valve inside the tank? Tell your mechanic about those. If your phone can get on the internet, show him those pics or print them out. Unfortunately, that internal hose and valves are not separate items to replace. The whole tank would need to be replaced.
All Darts have the access panel.
More from the FSM:
The evaporative emissions system is designed to control the release of fuel vapors into the atmosphere. The Multi-Function Control Valve (14) and Grade Vent Valve (16) are used to reduce emissions due to the venting of vapor expansion within the Fuel Tank (17). When fuel evaporates from the fuel tank, vapors pass through the Canister Tube (5) to the Evaporative Charcoal Canister (4) where they are temporarily held. When the engine is running, the vapors are drawn into the intake manifold through the Purge Tube (6). In addition, fuel vapors produced during vehicle refueling are allowed to pass through the Recirculation Tube (11) to the Evaporative Charcoal Canister (4) for temporary storage (prior to being drawn into the intake manifold). The Multi-Function Control Valve (14) and Grade Vent Valve (16) are non-serviceable components of the fuel tank assembly. The system is equipped with self-diagnosing capability using an Evaporative System Integrity Monitor (3) (Refer to 25 - Emissions Control/Evaporative Emissions/SWITCH, Evaporative Emissions System Monitor - Operation) .
The Fuel Tank Pressure Sensor (10) provides the PCM with information on vapor pressure inside the fuel tank. Excessive fuel tank pressure could cause fuel vapors to vent out the fuel filler cap or damage system components while insufficient fuel tank pressure (vacuum) caused by lack of fresh air entering the tank to take the place of consumed fuel, could lead to a collapsed tank, lines or loss of fuel pressure.
The Inlet Check Valve (18) prevents fuel from splashing back on the customer during vehicle refueling. This valve is also a non-serviceable component of the fuel tank assembly.
Last edited by alpinegreenneon; 02-08-2017 at 10:27 AM.
Reason: added pics and more info
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'13 Dart with almost 125,000 miles. I had this issue last winter/spring when it was below freezing. It's been fine all summer but I know it will return soon when it gets cold out. Seems to be a little rare for the Darts, anyone else having this issue?
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