Chevy Colorado & GMC Canyon banner
Cancel
Create thread New Garage Forums

Diesel gas pumps failing to auto shut off

Jump to Latest
1 - 10 of 10 Posts
T

time2gofishing

· Registered
Joined
·
51 Posts
Discussion starter · #1 ·
In my 20+ years of driving I have NEVER had a pump fail to shut off when the tank filled. Since I've had my diesel (maybe 1 1/2 months) it's happened twice. Most recently, I knew the tank was super low. I filled it quickly till it took 19 gallons then stopped pumping to allow the foam to settle. I then slowly continued to fill. It took 23.13 gallons when the diesel frothed out the fill pipe.

Does auto shut off frequently fail on diesel pumps?
 
#2 ·
I'm starting to think so, too. It seems the pumps are far less maintained than gasoline.

20 years driving, only two gasoline pumps have failed to autostop.
3000 miles driving the truck, and it's happened twice to me, also.
 
#3 ·
Yup, 2x for me also. Only have filled the tank 5x since we got it. 2 out of 5 is bad IMHO. Also have had the issue with ONLY the big-rig nozzle avail that does NOT fit into my tank fill hole, at fill up time, so I had to pump it uber slow while trying to maintain a good seal by holding the metal nozzle end against the tank fill hole. Aggravating & messy to say the least.
 
#4 ·
time2gofishing said:
In my 20+ years of driving I have NEVER had a pump fail to shut off when the tank filled. Since I've had my diesel (maybe 1 1/2 months) it's happened twice. Most recently, I knew the tank was super low. I filled it quickly till it took 19 gallons then stopped pumping to allow the foam to settle. I then slowly continued to fill. It took 23.13 gallons when the diesel frothed out the fill pipe.

Does auto shut off frequently fail on diesel pumps?
Click to expand...
The auto shut-off doesn't work if the flow is too low to trigger it, this isn't a problem with the pump, your tank, or the fill nozzle. It's you filling the tank so slowly in order to fill the tank and filler neck completely full that is causing this to happen. Did you used to use this same method to fill gasoline vehicles? I hope not. This will damage the vapor recovery system on many gasoline vehicles.


This is also a reason gas stations say not to "top off."

Fill it "properly" and you won't make a mess or else learn the sound of a filling/full filler neck so you know when to stop filling before it becomes overfilled.
 
owns 2017 GMC Canyon Denali
View garage
  • Like
Reactions: NWStever-1
Save
Reply Quote Like Like
#7 ·
time2gofishing said:
I'm not entirely sure I'm on board with that. The first overfill I had the handle on with the fill lock down on full fill speed
Click to expand...


The only time in nearly 30k miles that I’ve spilled fuel was when I was topping off too slowly and wasn’t paying attention so I know it happens from experience. [emoji51]

Filling up at the big rig pumps you have to be very careful as well due to the flow rate and building too much pressure which can lead to fuel burping back out.


Sent from my iPhone using Tapatalk
 
owns 2017 GMC Canyon Denali
View garage
Save
Reply Quote Like Like
1 - 10 of 10 Posts
About this Discussion
9 Replies
8 Participants
Last post:
dmcdufford
Chevy Colorado & GMC Canyon
posts
2M
members
149K
Since
2003
Join fellow enthusiasts to discuss modifications, troubleshooting tips, and share your experiences with these versatile midsize pickups, fostering a collaborative space for an exchange of knowledge and camaraderie among Chevy Colorado and GMC Canyon aficionados.
Full Forum Listing
Explore Our Forums
General Truck Chat 2nd Gen Chevrolet Colorado Forum / GMC Canyon Technical Questions / Tips / How To 2nd Gen Engines and Technical Discussion 2nd Gen Electronics, Audio, and Lighting