C5 fuel tank
Thread Starter
Race Director
Joined: Aug 2006
Posts: 13,542
Likes: 1
From: Are you fat because you're lazy or lazy because you're fat? San Jose, CA
Cruise-In X Veteran
St. Jude Donor '09
C5 fuel tank
Can someone explain the C5 fuel tank to me? When I’m crawling around under the car I don’t see an obvious gas tank like most cars have. I remember reading it’s a dual tank setup on each side of the tranny/diff interface? If so, then how does the fuel pump system work? Are there 2 separate pumps? An exploded view would be great.
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
I dont have an exploited view, but this is the jist of it..
Single pump in the drivers side tank (there is an access panel to the pump bulk head in front of the driver side rear wheel) - Feeds to the fuel filter (there is a Y inbetween the tank and the fuel filter), the Y feeds the siphon pump on the Passanger side tank that keeps the drivers side tank full. (the y has a jet like fitting - small bleed off from pump)
The regulator is in the filter and returns fuel to the drivers side tank
Single line from regulator to fuel rail. Pressure is regulated at 56-58psi (give or take)
97/8 car's had the regulator on the rail (return line run all the way up front to motor)
late 03 and 04 have filter internal to tank.
hope this helps.
Single pump in the drivers side tank (there is an access panel to the pump bulk head in front of the driver side rear wheel) - Feeds to the fuel filter (there is a Y inbetween the tank and the fuel filter), the Y feeds the siphon pump on the Passanger side tank that keeps the drivers side tank full. (the y has a jet like fitting - small bleed off from pump)
The regulator is in the filter and returns fuel to the drivers side tank
Single line from regulator to fuel rail. Pressure is regulated at 56-58psi (give or take)
97/8 car's had the regulator on the rail (return line run all the way up front to motor)
late 03 and 04 have filter internal to tank.
hope this helps.
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
On the left and right of the car just in front of the axle you will see some metal protectors. If you remove those panels you will have access to the bottom of the tanks and the pumps.
Heel & Toe
Joined: Mar 2023
Posts: 20
Likes: 3
From: Tulsa, Oklahoma, USA
Can someone explain the C5 fuel tank to me? When I’m crawling around under the car I don’t see an obvious gas tank like most cars have. I remember reading it’s a dual tank setup on each side of the tranny/diff interface? If so, then how does the fuel pump system work? Are there 2 separate pumps? An exploded view would be great.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,544
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From: Cape Coral, Florida
If you look this thread is 18 years old.
Intermediate
Joined: Dec 2024
Posts: 47
Likes: 23
From: Lancaster, KY
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