Still leaking!

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Apr 15, 2018 | 12:19 PM

SirNorman

Thread Starter

Starting Member

Joined: Apr 2018

Posts: 1

Still leaking!

I have a 1998 8S 10 blazer 4 x 4. We’ve had the fuel pump replaced twice and the gas lines checked and also the fuel fill spout. However when I fill it up with gas it still leaks. We have checked everything and I can’t find nothing else I am at a loss. Help

Apr 15, 2018 | 06:11 PM

newguy

BF Veteran

Joined: Feb 2012

Posts: 4,205

From: Easthampton, ma.

My 98 tank had rusted right through along the seam, couldnt see it without dropping the tank

Apr 19, 2018 | 06:45 PM

jck1961

New Member

Joined: Jan 2009

Posts: 50

jck1961 is an unknown quantity at this point

Did you check the vent valve on the top front of the tank? It can leak around the o-ring or the nipple that connects to the vent hose can break off.

Apr 23, 2018 | 07:04 AM

LannyL81

Super Member

Joined: Oct 2008

Posts: 1,786

From: Tucson, Arizona

The fuel tank has a plastic vent at the front, very easy to get broken when dropping the tank. Might be able to view it using an inspection mirror, but there is very little space.

Apr 23, 2018 | 09:04 AM

ChuckNTruck

Junior Member

Joined: May 2017

Posts: 352

From: North Dakota

If that plastic fitting the others have mentioned is not broken.
Have you checked to make sure the round rubber seal for the pump is sealing correctly?
I had a bad experience with a cheap aftermarket gasket.
On a 97 4 door that i used to own i changed the fuel pump and it leaked bad when full so i dropped the tank and pulled the pump back out twice before i finally put the seal that came with the pump next to a factory GM seal and the aftermarket one was a slightly different diameter. I then reinstalled the aftermarket fuel pump with a GM gasket and it never leaked again.