Fuel Tank Slow Fill

[8WA Sman]

'07 E-Series comes in with complaint of slow fill/nozzle kicks off. IDS shows no codes in PCM, all monitors are complete, & mode 6 show Evap test all passed. I am posting a couple of ways to Diag this, pick your poison

 

 O yeah I almost refuse to pump gas in a customers vehicle, so for me that is not an option .

 

Method 1: Let IDS run Evap test.

 

Method 2 : Let vehicle test system with the help of IDS. Only 1 tool needed

 

Make sure FTP is at low pressure first. Open the canister purge(EVMV) with engine running and watch FTP_H20, I like to use the H20 pid because it's more sensitive.

Then I remove gas cap to make sure system will vent and this also proves no problems with tank side of system

 Then I start unhooking Evap system components 1 at a time starting @ the rear or fresh air side of the vent system.

NPF yet.

 

Look what happens when I remove the Evap vent solenoid

Now I see if I can control EVAPCV with IDS, solenoid makes no noise.

 Then I load check the CV circuit with my 10 ohm resistor, to make sure it's sound.

Method 3 : Smoke machine

 

Problem was bad canister vent solenoid/stuck.