Filling issues

[tgranthamfd]

I know there has been a lot of discussion, on here, about the P0446 code and issues when filling the tank. I thought I would share with you guys. I fianlly started messing around with all of the EVAP stuff, trying to find the problem. First I disconnected the line running from the canister to the pruge valve, not clogged up and no holes in it anywhere. Next I pulled the solnoid and filter, guess it is stock it was still all contained in front of the tank. This is where things started to make a little sence to me. The filter was full of red powdery dirt. I tapped it around and blew it out with compressed air, all in all we got about a quarter of a cup of dirt out of it. While I had most of it unhooked, I decided to pull the canister. I blew through it and it seemed to be unobstructed. Then I hit it with the compressed air and blew a dirt rooster tail out of it, about 4ft. high. We continued to blow short bursts of air through it, in both directions, until not much dirt could be seen. We then put it all back together and reset the codes. I put about 100 miles on it last night. So far no codes have come back and when I stopped by the gas pumps a minute ago, I was able to put gas in at full pump flow, which I have not been able to do since I bought the truck. All in all we estamated around a cup od dirt came out of the canister and the filter & cup. I guess the guy that owned it before me lived in some really remote dusty areas. Only time will tell, hopefully all will be ok for now. Next on the to do list is going to be the knoc sensor.

[AzDragonLord]

Glad you found the issue...good job!

[tgranthamfd]

Update, I put another 200 miles on the truck today, the check engine light did come back on but when I checked the code it was only the P0332 (knock sensor) not the P0446 (EVAP). So I guess all the dirt may have been the culprit.