Why can't I put more than 10 gallons of fuel in my tank?

[jonathon]

I've got a wierd issue...

No matter what I can not put more than 10 gallons of fuel in my blazer without getting insane splash back. I'm pretty sure it's not full either as the guy I bought it from said it was close to empty, but I've not been able to put much in it

What happens is right around 6 gallons I start getting a ton of splash back shutting the pump off, so I stop and wait a bit and usually get a gallon at a time in till it hit's about 8 gallons and then it's maybe .25 of a gallon each shot. It's acting like the air has no where to go but back out the filler neck

What could the cause of this be? I'd like to be able to fill the tank up...

 

[readymix]

What could the cause of this be? I'd like to be able to fill the tank up...

Sounds like it is full....

Does the gauge work?

 

[slyguy_22]

sure your vent hose isnt clogged? makes a vacuum after so much of the tank is filled up then dosnt have anywhere to go.

 

[jonathon]

Gas gauge does not work..

Where's the vent hose and how do I check?

 

[slyguy_22]

what year blazer? if the gauge dosnt work the vent hose wont make a difference

 

[dleroy43]

you have too much gas... give some to me




me thinks your gage is off

 

[buefchris]

yea,mail me some too!

 

[dremu]

It's not the gauge ... I went thru this with my pickup, one side was just fubar.

I just replaced the whole tank/sending unit as a combo 'cuz I bought another one on Craigslist cheap.

I'm thinking its the venting system, though. Basically, the big fat feeder pipe is the one the gas goes down through, right, but air has to come OUT of the tank so that the gas can fill that space... so if there's no way for that to happen or the hose or pipe that the air comes out of gets munged up... CORK, no air passes.

You're gonna hafta drop the tank, which sucks ... one word (well, picture

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=2792

Then take the sending unit off, and check that its plumbing is all clean (devoid of debris), and do the same for the filler pipe and its vent tube on the side of the truck.

Make sense?

-- A

 

[dhcomp]

i bet its full

 

[jonathon]

It would be quite funny if it was fully...

Wellllll I've got a bunch of empy gas cans laying around, maybe I'll try a siphon If I have to drop the tank anyways.......

How heavy are they empty? I remember doing one in a Lumina(car) and it wasn't too bad, but it was plastic.

 

[redneckdude]

It would be quite funny if it was fully...

Wellllll I've got a bunch of empy gas cans laying around, maybe I'll try a siphon If I have to drop the tank anyways.......

How heavy are they empty? I remember doing one in a Lumina(car) and it wasn't too bad, but it was plastic.

once all the fuel is out they are light. its just real thin stamped steel. id guess 10 or 15 lbs?

 

[mudboggink5]

try to get most of the gas out of the tank, and you should not have a problem. Its easy to drop the tank, disconecting the sending unit can be a pain. have fun

 

[91jimmy]

It might be full just mark your milage and full one of theose spare gas cans and drive until you run out. You should be able to go about 275 miles with a 31 gallon tank. That way you only have 3 to 4 gallons in the tank when you have to drop it to fix it.

 

[vortec]

It might be full just mark your milage and full one of theose spare gas cans and drive until you run out. You should be able to go about 275 miles with a 31 gallon tank. That way you only have 3 to 4 gallons in the tank when you have to drop it to fix it.

x2. exactly what i'd do. but, i get way more than 275 miles per tank in my 82 with 350/700/33s. not 100% sure on diff gear. forgot to count teeth when i changed the fluid and haven't gotten around to the "spin and count" method yet.