fuel door.
Le Mans Master
Joined: Jan 2008
Posts: 7,030
Likes: 10
From: Edmonton, Alberta
Mid America has a fix for this
But I know someone on this forum will have a do it yourself plan
Here is a T.A. from Mid America Motorworks
With the amount of rainstorms we have here in the Midwest, we have heard from a number of customers whose 1975-96 Corvettes have problems with water in the gas tank. Some of these owners blame non-stock locking gas caps as the avenue for water to enter the tank.
After investigating these reports, we found that almost all of these gas tank problems could have been prevented by proper drainage of the tank filler neck boot.
As these Corvettes age, they tend to be stored outside more often and are driven or parked in the rain. The factory filler neck boot drains have small inlets and hoses. If they are kept clear of leaves and debris, they will perform as designed. However, most owners never think to check this area of their car. Also, a single leaf, tree seed, or even a large bug can clog the small drain line. When the line is clogged, the neck boot will quickly fill with rainwater or even water from a car wash. Then, as you drive, the water is drawn into the tank by the venting of the gas cap, either stock or locking type. These caps must allow outside air to vent into the tank to replace the fuel pumped out by the fuel pump. However, if the cap is submerged, it will, vent water into the tank.
It is a simple matter to prevent this problem. When washing your Corvette, use the hose to blow out the neck boot drain. If you see that it is not draining properly, you may need to "rod out" the hose with a flexible wire to remove the blockage. For persistent problems on 1984-96 Corvettes, we recommend our Filler Boot Drain Kit to allow faster and more positive drainage.
So, take a few minutes and prevent your Corvette from "going snorkeling" this summer!
But I know someone on this forum will have a do it yourself plan
Here is a T.A. from Mid America Motorworks
With the amount of rainstorms we have here in the Midwest, we have heard from a number of customers whose 1975-96 Corvettes have problems with water in the gas tank. Some of these owners blame non-stock locking gas caps as the avenue for water to enter the tank.
After investigating these reports, we found that almost all of these gas tank problems could have been prevented by proper drainage of the tank filler neck boot.
As these Corvettes age, they tend to be stored outside more often and are driven or parked in the rain. The factory filler neck boot drains have small inlets and hoses. If they are kept clear of leaves and debris, they will perform as designed. However, most owners never think to check this area of their car. Also, a single leaf, tree seed, or even a large bug can clog the small drain line. When the line is clogged, the neck boot will quickly fill with rainwater or even water from a car wash. Then, as you drive, the water is drawn into the tank by the venting of the gas cap, either stock or locking type. These caps must allow outside air to vent into the tank to replace the fuel pumped out by the fuel pump. However, if the cap is submerged, it will, vent water into the tank.
It is a simple matter to prevent this problem. When washing your Corvette, use the hose to blow out the neck boot drain. If you see that it is not draining properly, you may need to "rod out" the hose with a flexible wire to remove the blockage. For persistent problems on 1984-96 Corvettes, we recommend our Filler Boot Drain Kit to allow faster and more positive drainage.
So, take a few minutes and prevent your Corvette from "going snorkeling" this summer!
Last edited by Sweet 90; Feb 25, 2008 at 05:31 PM.
A coat hanger or something similar worked down the hole should do it!
