Fuel Tank Replacement

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saig55

Junior Member
Joined
Feb 26, 2024
Posts
29
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49
Location
Mason, Tn
First Name
Thomas
Truck Year
1986
Truck Model
K10 Silverado
Engine Size
305
Here’s how it started.. running off the passenger side tank.. switch to left side, nothing. I’m thinking it’s empty.
Grab a gas can and start to put gas in it. Leaking from the hose.. look under and no clamp on the hose at the top.
Put hose clamp on and put fuel in.. no leak, great!! But gas doesn’t want to go in very fast like it’s blocked. Get about a half gallon in it and the tank is leaking.. crawl under and there is a nice hole in the tank..
I’m just gonna buy a new tank and install it. Do I need to get a new sending unit also and new hose? Not sure… 16 gal tank.
I’m thinking the po was gonna replace the tank and just didn’t finish. There are no nuts in the studs holding the straps…
 

Dleslie212

Full Access Member
Joined
Sep 2, 2019
Posts
225
Reaction score
133
Location
Phoenix
First Name
Dustin
Truck Year
1977
Truck Model
K10
Engine Size
5.7L 350
You don't have to get a new sending unit if yours is working, but I probably would. Replacing those is not fun, and you're going to have the tank down already anyway
 

saig55

Junior Member
Joined
Feb 26, 2024
Posts
29
Reaction score
49
Location
Mason, Tn
First Name
Thomas
Truck Year
1986
Truck Model
K10 Silverado
Engine Size
305
Yes that’s what I thought also..
Just ordered everything…
Thanks
 

75gmck25

Full Access Member
Joined
Oct 13, 2016
Posts
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1,833
Location
Northern Virginia
First Name
Bruce
Truck Year
1975
Truck Model
K25 Camper Special TH350 NP203
Engine Size
5.7
For an ‘86 you probably need a 3 port sending unit (feed from pump, return to pump, and vent). Get the right one now so you can set the truck up correctly with a fuel return line (prevents vapor lock and other hot weather issues), and venting.
 

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