Still leaking!

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04-15-2018, 12:19 PM

SirNorman

Starting Member

Thread Starter

Join Date: 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

04-15-2018, 06:11 PM

newguy

BF Veteran

Join Date: Feb 2012

Location: Easthampton, ma.

Posts: 4,205

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

04-19-2018, 06:45 PM

jck1961

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Join Date: 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.

04-23-2018, 07:04 AM

LannyL81

Super Member

Join Date: Oct 2008

Location: Tucson, Arizona

Posts: 1,748

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.

04-23-2018, 09:04 AM

ChuckNTruck

Junior Member

Join Date: May 2017

Location: North Dakota

Posts: 352

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.