1998 Jimmy: Fuel pump diagnostic questions
#11
11-22-2015, 08:12 PM
when I have a tank down I check it well externally for rust spots - I usually clean it well then I coat it with dupacolor pickup bed liner except for the fuel pump mounting ring and the pump its self - I kinnda figure a couple cans of bed liner beats dropping the tank again later for a seeping leak - been there done that 
#12
11-22-2015, 08:19 PM
Our GMC has a plastic tank but since I'm so old I'm rusting too I do know whatchamean! (I wonder if Duplicolor has my tint in stock? 
)
From riding old motorcycles I remember using a tank liner product that went into the bike's (empty & clean!) gas tank. Ya pulled the tank, cleaned it, made sure it was dry inside & then poured in the sealant and sloshed it around. (You can't always find a tank for an old Norton & ya hafta make do if you want to keep a stock tank on the bike.)
Can't remember product name but google will likely turn it up. It lines the entire fuel tank with a seamless, leakproof coating and that along with your external coat, would buy years on an old tank!
) From riding old motorcycles I remember using a tank liner product that went into the bike's (empty & clean!) gas tank. Ya pulled the tank, cleaned it, made sure it was dry inside & then poured in the sealant and sloshed it around. (You can't always find a tank for an old Norton & ya hafta make do if you want to keep a stock tank on the bike.)
Can't remember product name but google will likely turn it up. It lines the entire fuel tank with a seamless, leakproof coating and that along with your external coat, would buy years on an old tank!
#13
11-22-2015, 08:21 PM
I have had the jimmy for 4 years, have done the fuel pump a few times in those 4 years and have not once changed the fuel filter without an issue.
Then again, the tank was put in not too long before we got it, and I cut and hinged up an access panel in the rear of the truck so I do not have to drop the tank.
Then again, the tank was put in not too long before we got it, and I cut and hinged up an access panel in the rear of the truck so I do not have to drop the tank.
#14
11-22-2015, 08:30 PM
I think I might have the pictures of the hole cut in my build thread. I know I put them somewhere on this site.
There was no structural issues (even with the 50+lb sub box sitting on top of it, or if I were sitting on it either (160lb)
To get to it, take out a few interior panel screws in the rear to loosen them. They do not need to be removed, the fold the carpet back, and lift open the hatch.
It takes me 15-20 minutes to do a fuel pump, then when the carpet is put back, you cant even tell anything was done.
#15
11-22-2015, 08:37 PM
I guess i should have stated when tank is out and not down, I agree with keep it clean but I was addressing the fact that these tanks have a history of rotting from the outside
#16
11-22-2015, 09:22 PM
I only took pictures after the hole was cut. I never took photos once I added the piano hinge and riveted the 1/8" aluminum 1/2" wide piece as a stop.
I think I might have the pictures of the hole cut in my build thread. I know I put them somewhere on this site.
There was no structural issues (even with the 50+lb sub box sitting on top of it, or if I were sitting on it either (160lb)
To get to it, take out a few interior panel screws in the rear to loosen them. They do not need to be removed, the fold the carpet back, and lift open the hatch.
It takes me 15-20 minutes to do a fuel pump, then when the carpet is put back, you cant even tell anything was done.
I think I might have the pictures of the hole cut in my build thread. I know I put them somewhere on this site.
There was no structural issues (even with the 50+lb sub box sitting on top of it, or if I were sitting on it either (160lb)
To get to it, take out a few interior panel screws in the rear to loosen them. They do not need to be removed, the fold the carpet back, and lift open the hatch.
It takes me 15-20 minutes to do a fuel pump, then when the carpet is put back, you cant even tell anything was done.
#17
11-22-2015, 09:40 PM
I just seen a person named 72mm that cut his floor board out for the pump replacement.Was this you?It was back in 10-2015.It`s located under the back(driver side)rear passenger seat.
#18
11-22-2015, 10:20 PM
I just didn`t want you to do what they guy was doing with all that dirt on top if the tank.
#19
11-22-2015, 11:04 PM
It was on my 93 Jimmy. I also did it on the previous 94 blazer that I had.
I started searching through my posts to find the cut out pictures, but I got too lazy on my search.
But if you find the time to search through all my posts, you will find the pictures.
#20
11-23-2015, 06:58 PM
Used it on my old Norton's gas tank. Don't think it would adhere to a plastic tank, though.... and a plastic tank wouldn't rust but I can confirm it does great on old bike tanks, at least.